Posts Tagged copper

Montoso zone in Mexico drilling intersects pyrite-rich porphyry alteration containing broad intervals enriched in silver

Posted by on Tuesday, 9 July, 2013

Westminster Resources Ltd. has compiled results from five core holes drilled on the Montoso Target of the Company’s Cumbral-San Bartolo project in Sonora, Mexico. This portion of Westminster’s concessions is being explored through an earn-in Option Agreement with Capstone Mining Corp. (“Capstone”) who have 49% interest in the project having funded $3.3 million to date on exploration. A further contiguous 9,615 hectares of new mineral concessions have been added to the project.

A total of 4,163 meters was drilled in the five holes to test a complex geophysical anomaly system coincident with variably anomalous soil geochemistry and extensive leached gossanous zones. The geophysical surveys produced strong IP chargeability/resistivity responses associated with both high and low magnetic anomalies. The holes were designed to test various gradations in IP response intensity. All holes were drilled on angled (not vertical) projections. This drilling was a portion of the second phase of the project’s exploration with Capstone which also included alteration mapping, prospecting, soil geochemical sampling and geological mapping.

All holes encountered abundant pyrite as disseminations, on fractures and in veinlets in intrusive host rocks (granodiorite, feldspar porphyry, igneous breccia and magnetic mafic intrusive) which exhibit weak to moderate porphyry-related alteration (potassic-phyllic) and sparse veining to minor sheeted vein and stockwork development (“B and D veins”) occasionally containing molybdenite. The nature of the metal content, and geologic interpretation of the core suggests that this first phase of drilling at the Montoso Zone has encountered a pyritic peripheral silver-enriched halo component of a laterally extensive porphyry hydrothermal system.

The Montoso Zone drilling showing elevated results. Holes 1, 2 and 5 tested the central and south high chargeability and magnetic high and low patterns while holes 3 and 4 were designed to test the northern edge of the Montoso target and a blanket-like conductivity anomaly extending further to the north. (See Drill Hole Location and Alteration Maps at )

Mineralization is characterized by high-grade, gold-copper-silver veins, breccias associated with porphyry deposit-style systems and hematite-magnetite-sericitized zones and structures containing copper-gold-silver mineralization in an IOCG / Porphyry setting.

Recent airborne VTEM and MAG geophysical survey results for the newly-discovered Cumbral-San Bartolo area identified district-scale alteration and magnetic highs and lows associated with regional structures and intrusive emplacements. Completed ground magnetic highs and lows associated with regional structures and intrusive emplacements. Completed ground magnetic and IP geophysical surveys confirmed airborne anomalous patterns and mapping identified surface mineralization associated with a large hydrothermal system.

Completed aggressive exploration in 2012 included expanded 3D-IP and ground MAG coverage (219 Line kilometers), soil sampling (5,000 samples), mineralization mapping and diamond drilling (7 holes, 1,641 meters). The new 3D-IP chargeability survey identified the 1 X 1-1/2 kilometer high chargeability Montoso target and numerous other copper-silver-gold mineralized zones. 2013 drilling at Montoso is directed at this large porphyry system.

Magnetic and IP surveys for copper-gold porphyry target in BC

Posted by on Thursday, 20 June, 2013

COLORADO RESOURCES LTD. reports the results of ground magnetic geophysical surveys recently completed and also announce the start of a 5,000 m drill program on its 100% owned North ROK Property (Porphyry copper-gold) located 15 kms northwest of Imperial Metals Red Chris Mine in NW British Columbia.

As previously reported in news release dated June 12, 2013 Colorado discovered a new Induced Polarization (I.P) chargeability anomaly that is 1 km north of the discovery drillhole in an area of limited outcrop. Preliminary modeling of the recently completed geophysics indicates that this new I.P chargeability anomaly measures 500-800 m wide and 1400 m long. Ground magnetic surveys conducted over the same area revealed two anomalies flanking the I.P chargeability anomaly and one anomaly in the core of the I.P anomaly. The magnetic anomalies flanking the I.P anomaly measure approximately 300 m by 750 and 200 m by 700 m; the magnetic anomaly in the core of the I.P chargeability anomaly measures approximately 500 m by 700 m. See map attached (to view, visit the following link: Company’s website for details.

The Company is encouraged that these new coincident I.P and magnetic anomalies appear to have a similar geophysical signature to areas of known mineralization on the Property.

The Company is also pleased to announce that a 5000 m diamond drill program has commenced on the property within the existing permits.

Adam Travis, the Company’s President and CEO stated “I’m very pleased with the progress our technical team has made on our North ROK property to not only fine tune our next phase of drilling but to also advance other exploration targets on our claims. I look forward to a very exciting next round of drilling.”


Posted by on Tuesday, 28 May, 2013

North American Nickel Inc. announces that it has finalized the 2013 exploration plan for its 100% owned Maniitsoq project. The program, which is scheduled to commence in mid-June, will consist of a minimum of 3,000 meters of diamond drilling to follow-up on 2012 discoveries and test new geological, geophysical and geochemical targets identified from a review of exploration datasets. Surface pulse time domain electromagnetic (PEM) surveys and 550 line-km of helicopter time domain, electromagnetic and magnetic surveying will also be undertaken in areas not covered in 2011 and 2012.

NAN CEO, Rick Mark states: “We expect this to be a busy, exciting and productive year at Maniitsoq. Our experience on the project for the last two years and particularly our camp/drilling experience last year has allowed us to ramp up for our planned $5,500,000 2013 program smoothly and efficiently. Chief Geologist John Pattison has been full time on the project since we left Greenland last September. COO Neil Richardson will accompany our expanded ground team to Maniitsoq in early June with drilling expected to begin on, or around, June 21, 2013. Target identification has been very successful, as we now have identified more than 100 targets for consideration at Maniitsoq.”

Key elements and objectives of the 2013 Maniitsoq program are as follows:


  • To explore along strike and down plunge of the high grade mineralized zones intersected by NAN in 2012 at Spotty Hill and Imiak Hill.(e.g.123.94 m @ 0.81% Ni, 0.21% Cu, 0.03% Co and 0.26 g/t PGM including 24.20 m @ 1.75% Ni, 0.34% Cu, 0.06% Co and 0.52 g/t PGM at Spotty Hill and 26.98 m @ 0.98% Ni, 0.44% Cu and 0.04% Co including 16.64 m @1.36% Ni, 0.52% Cu and 0.05% Co at Imiak Hill). For example, the attached longitudinal section (Figure 1) shows the planned pierce points for three holes designed to test the interpreted down plunge extension of intersections in holes MQ-12-001 and -002 at Imiak Hill last year.
  • To test new, high priority conductors identified by helicopter-borne time domain electromagnetic surveys flown by NAN in 2011 and 2012. Priority will be given to high conductivity targets associated with mafic-ultramafic rocks such as target P-63 (see NAN press release dated March 20, 2013 for details).
  • Three-component bore hole electromagnetic (BHEM) surveys will be undertaken to increase the effective search radius of the hole. In cases where a hole has intersected conductive mineralization, the BHEM data can help determine its orientation. In cases where a hole fails to intersect a target conductor, the BHEM data can often provide more precise information on the direction to the conductor which allows the geologist to design a more accurate follow-up hole to intersect the target.


  • Over the winter NAN’s exploration team combed through all available exploration data from the project area. As a result, the inventory of potential targets has increased to over one hundred (Figure 2). To date less than 40 of these have been checked in the field. This year a four person team will be dedicated to checking as many of the other targets as possible.
  • The field checking will consist of prospecting, rock sampling and in some cases channel sampling and/or geological mapping.


  • Focused PEM surveys will be done over selected targets where further detail is required. The PEM system may also be used to test geophysical and geological hypotheses prior to drilling.


  • The surveys will be flown over several small blocks that cover areas of geological interest outside the main Greenland Norite Belt and in areas recently acquired by North American Nickel.

The 2013 exploration program will be conducted from a field camp situated within the project area. The camp logistics will be supplied by Xploration Services Greenland ApS of Nuuk who will also provide general expediting and support to the project. Westcore Drilling Ltd of Salmo, British Columbia will perform the diamond drilling and Crone Geophysics & Exploration Ltd. of Mississauga, Ontario will conduct the BHEM and surface PEM surveys. All of these contractors are experts in their respective fields.

To view the maps associated with this release, please visit the following link:

Ni-Cu sulphide exploration target in a recent airborne EM in Australia

Posted by on Thursday, 11 April, 2013

Cassini Resources (ASX: CZI) has defined a large scale high priority nickel-copper sulphide exploration target in a recent versatile time domain electromagnetic (VTEM) geophysical survey over its West Musgrave Project in Western Australia. Source..

The company believes the West Musgrave Project has the potential to host another large nickel-copper sulphide deposit such as BHP Billiton’s nearby 1.66 million tonne copper equivalent Nebo‐Babel deposit.

The target at West Musgrave is defined by a strong electromagnetic anomaly occurring over a strike length of about 600 metres.

The electromagnetic anomaly coincides with a dipolar total magnetic intensity anomaly.

Magmatic nickel sulphide deposits are usually highly conductive, and are often hosted by mafic and ultramafic rocks containing the magnetic iron oxide mineral, magnetite.

Cassini has begun planning and permitting for an on‐ground electromagnetic survey which will assist in defining higher order conductors and help to prioritise subsequent drill program targets.

The Musgrave is a poorly explored province currently experiencing aggressive exploration expenditure following the discovery of BHPB’s Nebo and Babel nickel-copper-PGE sulphide deposits. Beadell Resources’ “Handpump” project has seen the first intersections of economic gold mineralisation in the Musgrave.

The tenements are prospective for nickel, copper, Platinum Group Element’s (PGE), gold and iron.

Many of the gravity and magnetic anomalies identified by majors BHP Billiton and Anglo Australian are located on the project. None of these have been tested by drilling. Cassini looks forward to commencing exploration or partnership opportunities on successful grant of the tenements.

The new discovery on Sugar Zone Property (Ontario)

Posted by on Monday, 1 April, 2013

HARTE GOLD CORP. provides an update of current operations at the Sugar Zone Property.

VTEM Target Drilling

Harte Gold has completed a four hole diamond drill program on the Ni-Cu VTEM anomaly located at the north end of the Dayhossarah lake on Harte Gold’s Sugar Zone Property.

The drilling discovered a broad zone of semi massive to massive sulphides in Komatiites with intersections up to 160 metres in thickness with primarily pyrite and pyrrhotite.

Assays of the drill core contained minor amounts of nickel, copper, platinum and palladium. Some higher grade intersections of magnesium were discovered running up to 11% Mg and were associated with biotite schists. No further work will be done on this target at this time.

“The VTEM Survey clearly outlined an area of massive sulphides that was proven with the drilling,” said Stephen G. Roman, Harte Gold’s President & CEO. “Now we need to test the other VTEM targets we have generated with our 2012 survey, to potentially discover new areas of economic mineralization on the Sugar Zone Property.”

Sugar Zone Deposit Bulk Sample Update

Harte Gold is pleased to announce the Ministry of Northern Development and Mines has accepted and filed its Closure Plan for the 70,000 tonne bulk sample. Harte Gold is proceeding with other permitting work associated with site preparation and underground development and looks forward to moving forward with this project.

Harte Gold is currently conducting a 1,500 metre seven (7) diamond drill hole program to establish 35 metre pierce points and confirm the grade in the bulk sample area. Assay results will follow.

Airborne EM in Colombian Porphyry Gold Copper Project

Posted by on Saturday, 8 December, 2012

Bellhaven Copper & Gold Inc. reports the commencement of the previously announced ZTEM (airborne electro-magnetics) survey over the entire La Mina property (1,800 Ha). The survey is also being extended to include an adjacent concession, which the Company is currently in discussions to acquire. The work is contracted to Geotech Ltd., a Canadian geophysical survey company specializing in leading edge airborne technology. The survey is designed to help refine the targets at La Mina, with a particular emphasis on the Garrucha and Cristalina target areas.

The helicopter-borne geophysical survey will result in approximately 132 line kilometres of data along east-west lines, spaced at 200 metres. The Z-TEM Electromagnetic (EM) system is an innovative technique making use of naturally occurring or passive EM fields from worldwide thunderstorm activity as the source of transmitted energy. The passive source combined with a proprietary receiver design, advanced digital electronics, and signal processing results in low noise levels, exceptional resolution, and unparalleled depth penetration. It has been used successfully to identify and map porphyry style mineral systems from Alaska to Chile.

Patrick Highsmith, Bellhaven’s CEO, commented on the program: “We are pleased to bring the ZTEM technology to the Middle Cauca Belt for the first time. It is a proven technique for porphyries in the Americas. This will enable us to prioritize existing geochemical and magnetics anomalies, including on concessions that we are in negotiations to acquire. This is a very cost effective tool that adds immediate value in an emerging mineral district such as La Mina. By sharing the mobilization and some of the administrative costs with neighboring explorers, we have made it even more cost effective.”

Discussion of ZTEM Survey

The survey is expected to identify conductive and resistive features that are associated with large mineral systems such as gold-copper porphyries from surface to considerable depth. The electromagnetic data is sensitive to sulfide minerals, as well as silicification and clay alteration; all of which are associated with the porphyry and epithermal deposits in the Middle Cauca Belt. This will be an important addition to the magnetics data that drove the initial discoveries. The EM data will advance the geologists’ knowledge of the known resource areas, particularly at depth, but it will also upgrade the targeting arsenal elsewhere on the property. This work will also enhance understanding of large structures in the district. Many of these structures have previously been mapped from both surface exposures and drill intercepts; and the Bellhaven team is focused on their importance in controlling mineralization.

The survey crew arrived on site November 17, and began conducting reconnaissance flights a few days later. They are currently flying the survey as cloud cover permits. It is expected that a total of 6 to 8 days of favorable conditions is needed to complete data collection, so the survey should be completed before the end of December.

La Mina Porphyry Gold Copper Project

La Mina is a resource stage porphyry gold-copper project located in the Middle Cauca volcano-plutonic belt in the Department of Antioquia about 45 km southwest of Medellin. The Middle Cauca belt is known to host large porphyry gold deposits such as AngloGold’s La Colosa Deposit (24 Moz Au) and Sunward Resources’ Titiribi Project (11 Moz Au).

Exploration Targets

The La Mina concession includes almost 2,000 hectares. A number of anomalous features are evident from the initial airborne magnetic survey, completed by AngloGold. As surface sampling and drilling progressed, a number of multi-faceted targets emerged. Through the first half of 2012, a total of four known mineralized porphyry systems have been identified; two of these deposits are host to NI 43-101 compliant inferred mineral resources. The two remaining known porphyries will be the focus of future drilling, meant to advance these prospects to the resource stage as well. The exploration pipeline at La Mina includes a number of other targets that, based on geology, geochemistry and geophysics, have characteristics similar to porphyry or porphyry related deposits. There are at least 7 of these discrete targets undergoing additional work, but they have not yet been drilled. The figure below shows total magnetic intensity (reduced to pole) from an airborne magnetics survey. Many of the targets are identified on this map; and more detailed information is available below.

Extending the Cu-Pt-Au zone near Sudbury with IP

Posted by on Wednesday, 31 October, 2012

Wallbridge Mining Co. of Toronto reports that it has found new copper-platinum-palladium-gold occurrences on its 78% owned Wisner joint venture with Xstrata Nickel near Sudbury. One sample, said Wallbridge, assayed 5.59% Cu and 5.39 g/t TPM (Pt+Pd+Au).

The new occurrences extend the Southwest zone trend over 80 metres along an IP geophysics anomaly that includes a 400-metre stretch that has not been drill tested. They are part of a 1.0-km-long trend of mineralization and anomalous geophysics that is along strike from Walbridge’s Broken Hammer Cu-PGE development project.

Wallbridge has defined four drill ready target areas including the immediate discovery upside surrounding the Broken Hammer Cu-PGE deposit, the large trend of anomalous mineralization at the Southwest occurrence, and two other areas with similar geology and geophysical anomalies.

Marz Kord, President and CEO of Wallbridge, stated “These new Cu-PGE occurrences along the same strike trend of our Broken Hammer deposit demonstrate the strong potential of Wallbridge’s Wisner Area Property Package, which extends over 10 kilometres of favourable geology.”

See for more information about the Broken Hammer project.

The New Geophysical Targets at the Porphyry System in British Columbia

Posted by on Wednesday, 26 September, 2012

Gold Reach Resources Ltd. announces that results from a reconnaissance induced polarization (IP) geophysical survey have been received.


  • Two new geophysical targets have been identified on the property
  • The 25,000 metre drill program at Ootsa is being extended and the camp is being winterized to allow the company to continue drilling into the winter season
  • The Ootsa property is over 22,000 hectares and remains highly unexplored

Reconnaissance Geophysical Survey Results

The program included 42.9 kilometres of reconnaissance IP geophysical surveying and was done along 3 widely spaced 5 kilometre long lines located to the east of the Seel deposit and along a network of existing logging roads. The objective of the survey was to test for chargeability anomalies on the east side of the claim block which is largely covered by thin glacial gravels. Two large, kilometre scale anomalies were identified.

The first anomaly is approximately 2 km by 1.5 km, with chargeability values exceeding 40 mV/V, and partially coinciding with a resistivity low. This anomaly is located directly east of the Ox porphyry. The Company plans to drill test the anomaly this year after soil samples taken over the zone have been analysed and interpreted.

A second significant chargeability anomaly with values exceeding 40 mV/V has been identified 5 kilometres east of the Seel deposit. This anomaly occurs along a north-south oriented line over a length of 1.4 kilometres and remains open to the east. The company is conducting soil sampling and mapping in this area to further evaluate the anomaly.

Drilling Update

Drilling on the West Seel deposit is continuing with one drill exploring the southern extension of the zone and a second drill expanding the deposit to the north. At West Seel holes S12-101 to S12-128 have been completed and the drills are currently working on holes S12-129 and 130. Holes S12-112 to 128 and Ox12-27 to 35 have been sampled and are in the lab getting assayed. Further assay results will be released as they are received.

The ongoing drill program continues to significantly expand the mineralized zone at the West Seel deposit which remains open to the north, south and at depth. The 2012 drilling program has already exceeded the planned 25,000 metres of drilling. Given the success of the program the company has extended the drilling through the fall. Efforts are underway to winterize the Ootsa camp to allow drilling to continue later into the winter season. A resource update will commence once drilling is complete and results have been received.

Airborne and borehole geophysics in Greenland

Posted by on Friday, 21 September, 2012

North American Nickel Inc. reports that it has completed its first drill campaign at its 100% owned Maniitsoq project. Drilling commenced on August 26 and was completed on September 16. Nine diamond drill holes totalling 1,550 metres were drilled.

All nine holes have been logged and all mineralized intersections have been sampled. A total of 531 samples have been collected for assay. The samples are now on their way to Activation Laboratories for analysis and results are expected in four to eight weeks.

The holes tested electromagnetic (EM) anomalies associated with noritic rocks and nickel sulphide showings. The anomalies were outlined by SkyTEM and VTEM helicopter-borne, time domain, EM surveys flown by the company in 2011 and 2012. Crone Geophysics Ltd of Mississauga, Ontario surveyed eight of the holes with their 3-component borehole pulse EM (BHEM) system. Preliminary analysis has been completed and final analysis will be done before assay results are received.

Results from the drilling and BHEM surveys will be merged with the Company’s existing exploration database which will allow the NAN geological team to finalize its plans for the 2013 drill season at Maniitsoq.

The Maniitsoq property in Greenland is a district scale project. It comprises a 4,983 square km mineral exploration licence covering numerous high-grade nickel-copper sulphide occurrences associated with norite and other mafic-ultramafic intrusions. The 70km plus long belt is situated along, and near, the southwest coast of Greenland, which is ice free year round. The Maniitsoq area is underlain predominantly by highly deformed and metamorphosed Archean gneisses. Supracrustal rocks comprise about 10% of the area and consist mainly of amphibolite (metamorphosed and deformed volcano-sedimentary sequences). Most of the nickel discovered to date is associated with younger, undeformed norite intrusions that are concentrated in (but not restricted to) a 15 km wide by 75 km long “J”-shaped belt, referred to as the Greenland Norite Belt (GNB), that rims a large, complex known as the Finnefjeld gneiss complex.

The New Copper Oxide Zone at the Escalones Project in Chile

Posted by on Wednesday, 19 September, 2012

South American Silver Corp. announces the results of a 5 hole diamond drilling program and the interpretation of the ZTEM Conductivity and Magnetic geophysical surveys at the Escalones copper-gold project, approximately 100 km southeast of Santiago, Chile and 35 km east of El Teniente, the world’s largest underground copper mine. Escalones, as previously announced and supported by a NI 43-101 technical report, contains a defined Inferred Resource of 420 million tonnes of mineralized material containing 3.8 billion lbs of copper, 56.9 million lbs of molybdenum, 610,000 ozs of gold and 16.8 million ozs of silver using a 0.2% Cu Equivalent cut-off grade (see December 19, 2011 News Release). The detailed NI 43-101 Technical Report is available on SEDAR under the Company’s profile and on the Company’s website at

The Escalones property lies within the well-known central Chilean porphyry copper belt that runs north-south through Chile in the central Andes Mountains. It is located approximately 100 km southeast of Santiago and 35 kilometers due east of El Teniente, the world’s largest underground copper mine. The project has excellent infrastructure including road access and a gas pipeline that crosses the 70 square kilometer property.

The Escalones project hosts a four-square-kilometer area of hydrothermal alteration with coincident geophysical anomalies that has demonstrated significant grades of copper, gold and silver in replacement-style “skarn” mineralization hosted in limestones and in porphyry related mineralization.

Diamond drill hole ES-35, located 300 metres E of ES-24, intersected 71 metres of near surface, oxide copper mineralization averaging 0.64% copper equivalent (“CuEq”). This near surface mineralization correlates with a ZTEM conductivity anomaly which is approximately 500 metres wide and at least one km long. Drill testing, starting when the snow clears in November, will further test this target. ZTEM is a geophysical tool that helps to identify mineralized areas that are conductive.

Diamond drill hole ES-35 also intersected high grade skarn mineralization at 456 metres intercepting 4.5 metres of copper mineralization averaging 4.32% CuEq within a 9.25 metres zone averaging 2.39% CuEq. A copper skarn is a carbonate rock that has been “cooked” and mineralized by the heat and fluids from nearby copper bearing intrusions. Examples of copper porphyry plus skarn deposits include the well-known Bingham Canyon Mine in Utah and the Twin Buttes Mine in Arizona.

The skarn at Escalones has now been traced by drilling approximately 1.7 km horizontally and 1.1 km vertically. A large magnetic anomaly is associated with much of the known skarn mineralization and this anomaly extends several hundred meters further to the north of the drilled area, at least 500 meters to the south and approximately 500 metres further east. The anomaly also extends to a depth of several km, many hundreds of metres below the level of current drilling.

Ralph Fitch, Executive Chairman, stated “This is the first time we have located a good thickness of near surface copper oxide mineralization at Escalones. The importance of this type of mineralization is that it is often the least expensive type of copper to recover because it is typically heap leachable. If future drilling shows that this zone is extensive it will be an important new body of mineralization that is not in the present resource. This new zone combined with that found on the west side of the property in holes ESC-26 (46m@0.53% copper) and ESC-28 (34m@0.52% copper) represents an important part of the mineralized system found to date at Escalones because of its likely low cost leachability. Also, the deep skarn intercept is important, both because of its grade and also because it demonstrates the huge column of copper mineralization present at Escalones which extends from surface to depths of greater than one kilometer. Our upcoming drill program will start to convert this vast column of mineralization into a resource.”

Upcoming Drilling Campaign

Up to 30 holes are planned to confirm and expand the resource in the 3 categories reported previously, oxide/sulphide, skarn and porphyry. The results from this drilling will be combined with earlier results and an updated resource will be developed and reported in compliance with NI 43-101.

The true thickness of the intercepts reported is not known at this time.

Magnetic susceptibility anomalies are only an indication of the presence of the skarn mineralization and the reader should not assume that “ore grade” mineralization will be intersected.

ZTEM conductivity anomalies are only an indication of the presence of mineralization and the reader should not assume that “ore grade” mineralization will be intersected.

Samples were analyzed by Andes Analytical Assay Laboratory located in Santiago, Chile. Gold was analyzed using fire assay and the AA (Atomic Absorption) method while silver, copper, gallium, indium, molybdenum and 38 additional elements were analyzed by ICP AES HF43 method with a four-acid digestion. The copper equivalent has been calculated using the following prices: copper $3.50/lb, gold $1,600/troy oz, silver $30.00/troy oz, molybdenum $11.00/lb, lead $0.90/lb and Zinc $0.90/lb. Values have not been adjusted for metallurgical recoveries.

Airborne EM Anomalies Confirmed by Drilling in Western Australia

Posted by on Friday, 7 September, 2012
Rox Resources Limited reports the results from Rotary Air Blast (RAB) and Aircore (AC) drilling completed in July 2012 at the Mt Fisher gold-nickel project, 220km north of Leonora in Western Australia.
The 6,517m drilling program, consisting of 85 RAB and 48 AC holes, was designed to test a combination of regional structural and geophysical targets under cover, as well as some strong geochemical gold anomalies.
Rox Managing Director, Mr Ian Mulholland commented on the results, saying that it was encouraging to extend the Dam and Dirks anomalies further, and to also identify a strong nickel sulphide target where there had been no previous drilling.
AC drilling at Fisher East targeted both gold and nickel mineralisation on the NW-SE trending, east-dipping mafic-ultramafic greenstone belt. This included two 1km and 1.7km traverses of 80m spaced angled drill holes across the entire width of the belt where no drilling had been completed previously.
This drilling successfully confirmed prospective ultramafic margins and located several nickel-copper geochemical anomalies. One of the anomalies corresponds with a VTEM conductor and presents a strong target for nickel sulphide mineralisation at depth to be tested with RC drilling.
“We’ve got a number of strong gold targets still to follow up at Mt Fisher, and our belief that the Mt Fisher Greenstone belt has the potential to host at least a million ounces is still strong. In addition, the nickel sulphide target is intriguing, with the geochemical anomaly lying over the VTEM anomaly in a good geological position”, Mr Mulholland said.
AC drilling at the Dirks Prospect intersected mineralisation in MFAC001 (4m @ 0.54g/t Au from 54m, and 5m @ 0.25g/t from 76m to EOH) and MFAC004 (8m @ 0.40g/t from 48m). This line of infill drilling is located approximately 180m north of mineralisation in MFA254 (2m @ 13.7g/t Au from 54m). The results show that mineralisation at Dirks is continuous along strike, and RC drilling is being designed to test this anomaly at depth.

RAB drilling at Dam South was designed to broadly test a series of VTEM anomalies situated along strike from mineralisation to the north. Significant gold assays returned included 12m @ 0.24g/t Au from 44m in hole MFRB037, and 4m @ 0.27g/t Au from 16m in hole MFRB043. These results confirm the potential source of the VTEM anomaly and warrant further drill testing.

Read more..

Mt Fisher Gold Project (100%)
Rox has acquired a 615 km2 tenement package which dominates the highly prospective Mt Fisher Greenstone Belt, 40km to the east of the prolific Yandal greenstone belt and 100km east of the main Wiluna greenstone belt.
Rox has an Option to acquire a further area of 170 km2, including the Mt Fisher gold mine which has previously produced 30,000 ounces of gold, and shares similar geological characteristics with neighbouring greenstone belts that host several multi-million ounce gold deposits. Much of the Mt Fisher Greenstone Belt remains significantly under-explored and Rox is focusing on a number of options to establish near-term gold production at Mt Fisher.

The New Potential Ni-Cu targets in Tanzania

Posted by on Friday, 7 September, 2012
IMX Resources Limited reports the identification of twenty-five new high priority VTEM anomalies from the recently completed airborne magnetic and versatile time-domain electromagnetic (VTEM) survey over selected areas within the Nachingwea Nickel-Copper JV Project located in southeast Tanzania.
The delineation of multiple late time EM anomalies further enhances the regional prospectivity of the Nachingwea JV property. Of potential significance is the identification of a high amplitude late time EM anomaly coincident with the Hog gold prospect, where surface gossan sampling returned values of up to 4.96 g/t Au and 0.64% Cu (ASX: May 28, 2012).
Patricia Tirschmann, VP Exploration, commented: “We are pleased to have completed another successful regional VTEM survey and are very encouraged by the number of high quality targets generated. The identification of an EM anomaly coincident with the Hog gold prospect further enhances the exploration potential of this target and we look forward to drill testing it and other high priority targets beginning in September.”
The airborne geophysical survey was carried out by Geotech Limited of South Africa employing the Versatile Time-Domain Electromagnetic (VTEM) geophysical system. The survey ran from July 29th to August 11th and a total of 2,409 kilometers were flown in five flight blocks.
The flight blocks comprising the 2012 airborne VTEM survey were selected by prioritizing areas based on results of the 2010 airborne magnetic and radiometric survey in combination with results of geochemical sampling and geological mapping. Preliminary data from the new VTEM survey is currently being evaluated, and targets are being selected for ground follow-up in order to help prioritize anomalies for drill testing later in the year.
Analysis of the preliminary VTEM data indicates that EM anomalies have been detected on each of the five flight blocks and approximately twenty-five of these represent high priority anomalies with late channel responses. Of potential significance is a high amplitude late time EM anomaly detected on three 200 metre spaced flight lines which is coincident with the Hog gold prospect where surface gossan grab samples returned values of up to 4.96 g/t gold and 0.64% copper (May 25, 2012 Press Release). Several other VTEM anomalies are also confirmed to have coincident copper and/or nickel in soil anomalies.
The Company plans to carry out 1,500-2,000 metres of reverse circulation drilling to test selected high priority regional VTEM and geochemical anomalies including the Hog gold prospect. This drilling is currently expected to begin in mid-September.

Exploration activity at Nachingwea has identified several zones of nickel sulphide mineralisation, at Ntaka Hill, where a combined Measured and Indicated Resource of 12.79 million tonnes (Mt) grading 1.21% Ni (using a 0.2% Ni cut-off) has been announced. The resource equates to an estimated 154,700 tonnes of contained nickel.

In addition, an Inferred Mineral Resource of 45.04Mt @ 0.3% Ni (using a 0.2% Ni cut-off) has been identified at Ntaka Hill.

A positive scoping study for an open pit mining operation means that the Nachingwea project is now advancing towards a potential production commencement date in 2015.

Read more..

Results of an Airborne Geophysical Survey in Tanzania

Posted by on Monday, 27 August, 2012

Continental Nickel Limited reports the identification of twenty-five new high priority VTEM anomalies from the recently completed 2,409 kilometer airborne magnetic and electromagnetic (EM) survey within the regional land holdings comprising the Nachingwea Project located in southeast Tanzania. The project is part of the 75:25 joint venture between CNI and IMX Resources Limited of Australia.

Highlights of the 2012 Airborne Survey

  • Large, high amplitude late time EM anomaly coincident with the Hog gold prospect
  • Twenty-five high priority targets selected for ground follow-up
  • 1,500-2,000 metres of RC drilling planned

Patricia Tirschmann, VP Exploration, commented: “We are pleased to have completed another successful regional VTEM survey and are very encouraged by the number of high quality targets generated. The identification of an EM anomaly coincident with the Hog gold prospect further enhances the exploration potential of this target and we look forward to drill testing it and other high priority targets beginning in September.”

The airborne geophysical survey was carried out by Geotech Limited of South Africa employing the Versatile Time-Domain Electromagnetic (VTEM) geophysical system. The survey ran from July 29th to August 11th and a total of 2,409 kilometers were flown in five flight blocks. The location of the survey is shown in Figure

The flight blocks comprising the 2012 airborne VTEM survey were selected by prioritizing areas based on results of the 2010 airborne magnetic and radiometric survey in combination with results of geochemical sampling and geological mapping. Preliminary data from the new VTEM survey is currently being evaluated, and targets are being selected for ground follow-up in order to help prioritize anomalies for drill testing later in the year.

Analysis of the preliminary VTEM data indicates that EM anomalies have been detected on each of the five flight blocks and approximately twenty-five of these represent high priority anomalies with late channel responses. Of potential significance is a high amplitude late time EM anomaly detected on three 200 metre spaced flight lines which is coincident with the Hog gold prospect where surface gossan grab samples returned values of up to 4.96 g/t gold and 0.64% copper (May 25, 2012 Press Release). Several other VTEM anomalies are also confirmed to have coincident copper and/or nickel in soil anomalies.

The Company plans to carry out 1,500-2,000 metres of reverse circulation drilling to test selected high priority regional VTEM and geochemical anomalies including the Hog gold prospect. This drilling is currently expected to begin in mid-September.

Airborne EM for Porphyry Copper-Gold in Papua New Guinea

Posted by on Thursday, 28 June, 2012
Goldminex Resources Limited updates on recent exploration activities at the Liamu Project in PNG.
Goldminex is focused on the discovery of greater than 2Moz gold or gold equivalent deposits in Papua New Guinea and has extensive prospective tenement holdings consisting of Exploration Licences and Exploration Licence Applications covering 10,754km2.
LIAMU PROJECT (EL 1606) (Goldminex/Vale JV)
The Liamu Project is located 120km east of Port Moresby within the Owen Stanley Region of PNG. Goldminex’s initial exploration work defined the Liamu intrusive complex and several prospects within it. Vale identified Liamu as a high priority target and moved quickly to commence drilling following the signing of the Farm-in Agreement.
 The Liamu Project has 11 prospects exhibiting surface indications of porphyry copper-gold mineralisation within a 35 km2 area.
 3,292m of a planned 4,000m program have been completed in six holes.
 Prospects drilled include Movei, Nesei, Unebu, Iyiowai and Maoba.
 Low-grade copper mineralisation in Maoba hole MABDH002 developed over a 151m interval from 153m depth including the following intersections;
o 59m @ 0.16% Cu from 186m to 245m
o 24m @ 0.21% Cu from 189m to 213m
 Drill results support the potential for Liamu to host a significant copper-gold porphyry system.
 Drill rig remains on site in anticipation of additional drilling in the near term pending results from ongoing investigations.
Ten prospects have been identified by surface geochemsitry at Liamu to date. These are Nesei, Movei, Tikay, Dada, Unebu and Berefana, all within the 5.5km x 1.5km alteration zone known as the Berefana Region, and Imorobi, Biafa, Bubuafu and Iyiowai to the north and east. An eleventh prospect, known as Maoba, is a ZTEM geophysical survey target.

A 4,000 metre diamond drilling program commenced in November 2011 has produced encouraging results at the Movei, Nesei, and Unebu Prospects and, in early 2012, a ZTEM geophysical survey was completed over the Liamu and Jog Project areas.
Maoba Drill Hole – MABDH002

Hole MABDH002 at the Maoba Prospect targeted coincident strong conductor and magnetic anomalies identified by a ZTEM survey completed in January 2012.
ZTEM conductor beneath surface topography showing the trace for MABDH002.
Assay results have been received for the majority of the hole and include the following:
 59 metres @ 0.16% Cu from 186 metres
 24 metres @ 0.21% Cu from 189 metres
The lithology of the above zone was a medium grained pale grey – green, intermediate volcaniclastic unit. Within this volcanic unit were moderately dark grey un-mineralised shoshonitic dykes. The volcaniclastic contains polymict crackle and fluidised, milled breccia zones throughout, Plate 2. Clasts within the breccia were uniformally barren with very fine grained sulphides present in the matrix. Alteration was mainly chlorite – silica – magnetite with areas of intense clay alteration.

World Bank’s Nigeria assessment is based on geophysical survey

Posted by on Saturday, 10 March, 2012

Nigeria is now in a position to export copper as it has abundant resources of the mineral, particularly in Plateau State, says the World Bank.

The Word Bank’s Nigeria Project Manager, Linus Adie, stated this at the public presentation of the Interpreted Projects of the Airborne Geophysical Survey and Geochemical Mapping of Nigeria.

He said Nigeria had so far succeeded in doing geophysics of 56 per cent of the country, including Niger Delta. “The first aspect of it was to fly and collect the data; now the second aspect is to do the interpretations,” he said.

Adie, who called on Nigeria to disseminate geophysical data finding across the world to attract more investors, said that within five years, the World Bank and Ministry of Mines and Steel had commenced the mining reforms, adding that there were many exploration companies operating in Nigeria.

The data, he said, was not only for the mining sector but for planning, which would help the country in various other ways. For example, one of the land form maps revealed the level of desert encroaching into the Nigerian land mass.

Adie added that, quite apart from its value for mining, the geophysical information could be used to develop Nigeria’s agriculture, and the military could also use it for their operations.

Airborne Geophysics & Fieldwork Identify Multiple New Drill Targets in Mexico

Posted by on Saturday, 25 February, 2012

Geologix Explorations Inc. announces results from the property-wide airborne geophysical survey completed over the Company’s entire 172 square kilometre (“km”) Tepal project in Michoacán State, Mexico. Results of the survey have identified multiple new prospective exploration targets warranting immediate follow-up.

Highlights of the survey include:

  • Seven strong geophysical targets identified throughout project area
  • Three priority targets with coincidental gold, copper, silver, and molybdenum in geochemical or drilling results
  • Multiple anomalies located within the same structural corridor as the North, South, and Tizate zones
  • Follow-up evaluation being conducted over several targets to delineate priorities for a follow-up drill program

Of the seven (7) airborne geophysical anomalies identified, three (3) have had preliminary reconnaissance ground work and are considered priority drill targets. These new drill target areas range in size from 3 km by 3 km to 1 km by 1 km and appear to have similar geophysical & geological characteristics to those identified over the known mineralization (North, South, and Tizate zones) where in addition to favourable geology and geochemistry, structural controls intersect, which has proven to be an important component. The remaining four (4) areas are currently undergoing field work to better define their potential. All seven of these new areas are being followed up with detailed soil sampling, mapping, and trenching to delineate targets in advance of a systematic follow-up drill program.

President and CEO Dunham Craig stated: “We are pleased with these latest results as they give the Tepal project an exciting element of exploration potential to coincide with the ongoing development of the known deposits currently being advanced to a pre-feasibility study (“PFS”). The size of the exploration targets and our preliminary field examinations indicate that we are in a position to rapidly advance these targets toward a drill testing stage. Early drill testing is important as a new discovery could significantly impact final design in a definitive feasibility study.”

Target #1:

Target area #1 (3 km by 3 km) has a large geophysical signature of elevated magnetics, cored by a magnetic low where a potassic signature has replaced the magnetic low, which is a textbook geophysical signature for porphyry deposits. Outcrop is scarce in the area but observed exposure indicates the presence of an intrusive plug with local potassic and propylitic alteration similar to North, South and Tizate zones. A soil sampling program consisting of 220 soil samples, utilizing a line spacing of 200 metres (“m”) and sample separation of 100m has been completed with final results pending. Preliminary reconnaissance geochemical results indicate that the area is mineralized in gold, copper, silver and molybdenum.

Target #2:

Target area #2 (1 km by 1 km) lies along strike and within the same structural corridor as the known deposits. The geophysical signature suggests an intrusive plug in a structural setting identical to the zones that are subject to the current resource definition and PFS studies. The geophysical anomaly is coincident with previous geochemical anomalies (soil) in gold, copper and molybdenum. Additional soil sampling and trenching immediately over the coincident anomaly has been completed and analytical results are expected shortly. Trenching in the central area indicates it is underlain by intrusive rocks with potassic and propylitic alteration similar to the North, South and Tizate zones.

Target #3:

Target area #3 (1.5 km x 0.4 km) is located north of the Tizate zone in an area where prospect drilling by prior operators reported 32.0m grading 0.11 grams per tonne (g/t) gold, and 0.26 percent (%) copper. In addition, the IP survey contracted by the Company in 2009 has outlined a widespread chargeability anomaly in the same area. Further mapping and sampling is underway. The prior drill results are in line with results of peripheral mineralization outlined in the three known zones and warrants additional systematic drill testing.

Follow Up Anomaly #4:

The area lies along the same structural corridor that is host to the North and South zones. Structural interpretations indicate the area is underlain by complex and intersecting structures that are prospective for additional porphyry type mineralization. Field visits to the anomalous area suggest that a program of detailed soil sampling and mapping is required to further define the target.

Follow up Anomaly #5:

The area is located along strike and in the same structural setting/corridor as the known zones of mineralization and in line with Target #2. Electromagnetic signatures suggest that disseminated sulphide mineralization is present. No outcrop is present and the area is targeted for soil sampling and trenching in order to characterize the geophysical anomaly.

Follow Up Anomaly #6:

The area is located 2 km west of the North Zone in magnetic, electromagnetic and alteration terrain similar to the terrain hosting the known mineralization. Of specific interest is a radiometric anomaly suggesting a large area of potassic alteration, measuring approximately 3 km x 1 km.

Follow Up Anomaly #7:

The area is marked by a prominent magnetic intensity high and a radiometric anomaly indicating potassic alteration is present. Structural interpretations of geology suggest complexities that are favourable for porphyry type environments. The area measures 2 km x 1 km.

The airborne geophysical survey was designed to i) define and outline geological and structural domains that are similar to the domains within which current resources are located (magnetics); ii) identify the geophysical response of known mineralization to extrapolate and search for areas of similar signatures on the property (electromagnetics); and iii) identify and characterize geochemical signatures of alteration associated with known mineralization to further locate prospective areas on the property (radiometric).

Mr. Dunham L. Craig, P.Geo, President and CEO of Geologix Explorations Inc., Vancouver, BC, is the ‘qualified person’ for the purposes of National Instrument 43-101 Standards of Disclosure for Mineral Properties of the Canadian Securities Administrators, has reviewed and verified the data contained in this news release.

Geologix Explorations Inc. is a mineral exploration company focused on acquiring, exploring and developing mineral resource opportunities with the potential to host world class mineral deposits. The Company’s primary focus is the Tepal Gold-Copper Porphyry Project in Michoacán State, Mexico, where the Company has completed a Preliminary Economic Assessment study (“PEA”) of the existing resource and is continuing to aggressively explore for additional gold and copper mineralization in an effort to expand the size of the resource and scale of the possible future mining operation.

Complex Airborne EM Geophysical Surveys on Creston BC

Posted by on Wednesday, 22 February, 2012

Eagle Plains/Providence Identify 3 High-Priority Drill Targets from 2011 Airborne EM Geophysical Surveys

Eagle Plains Resources Ltd. and Providence Resources Corp. announces receipt of results from airborne geophysical field surveys carried out over their Iron Range JV project located near Creston British Columbia. During October-November 2011, Geotech Ltd. carried out VTEM time-domain EM and ZTEM AFMAG surveys over parts of the Iron Range Project. The results have subsequently been processed and interpreted by Condor Consulting, Inc. of Lakewood Colorado.


440 line-km of airborne geophysical data has been collected over the Property area during 2011.
3 high-priority VTEM electromagnetic geophysical anomalies have been delineated in the Row target area, and are coincident with a 5km-long arsenic, zinc and lead soil geochemical anomaly.
The ZTEM survey successfully identified the Iron Range Fault as well as a northeast-trending fault similar in orientation to the gold-bearing faults at the Talon Zone.

“Geophysical data collected on the Iron Range Project has produced three high priority EM conductors that coincide with lead, zinc and arsenic geochemical anomalies on the Row Target Area.” Stated Providence Resources Corp.’s President and CEO Vince Sorace. “The combined results from the geophysical surveys have fine-tuned the Iron Range geological model and increased our confidence in the Row Target area which will be drill-tested upon receipt of applicable permits, which are expected by Q2, 2012.”

Geophysical Survey Results

VTEM time domain-EM
A total of 7 anomalies were defined from the VTEM survey; see Anomalies 1-3 represent high-priority EM anomalies and are located within and immediately adjacent to a ~5 kilometer-long lead-zinc-arsenic soil anomaly situated in prospective middle Aldridge Formation sedimentary rocks. These three anomalies may be an indication of subsurface Sullivan style lead-zinc-silver mineralization and will be drill tested in Spring, 2012. Anomalies 4 to 7 represent secondary priority targets and are likely related to the subsurface geology. Anomaly 4 is a broad, low level conductor associated with a magnetic contact and is interpreted to represent a near-surface bedrock anomaly or conductive overburden. Anomaly 5 is a formational anomaly defined by coincident EM and magnetic anomalies which correspond to the location of a sliver of upper Aldridge Formation sedimentary rocks. Anomaly 6 is a broad, northeast trending conductive zone associated with a linear, northeast trending magnetic anomaly. Drilling done in this area indicates that the anomaly is related to graphite within the Aldridge Formation sedimentary rocks. Anomaly 7 is interpreted to be an artifact that is related to a power line that transects this portion of the VTEM survey.

The ZTEM orientation survey was conducted over the Canyon Target (Talon Zone) to determine whether this geophysical method would be capable of mapping bedrock geology based upon the known resistivity and magnetic susceptibility contrasts within the Aldridge sedimentary rocks; see The survey successfully identified the Iron Range Fault as well as a northeast-trending fault similar in orientation to the gold-bearing faults at the Talon Zone. In addition, the survey identified the broad conductive zone also detected by the VTEM survey. This information is useful in better understanding the subsurface geology of the Iron Range area and how known target areas relate to major rock units and structures.

Exploration Focus

Ongoing work by Eagle Plains Resources Ltd. is focused on exploring the potential of the Iron Range fault zone and surrounding area as a conduit and host for both sedimentary exhalative (SEDEX) Ag-Pb-Zn mineralization and Iron-oxide-Cu-Au (IOCG) mineralization.

2012 Exploration Program
The Company intends to execute a full exploration program beginning in March, 2012 (subject to receipt of permits) with the objective of systematically evaluating all existing exploration data, utilizing newly acquired geophysical data, field evaluating all resulting anomalies and ultimately drill testing the highest priority targets.

Geophysical gravity survey – it is anticipated that results from this work will be available in March, 2012.
Winter drilling (Phase I) of high-priority geophysical and geochemical anomalies. High priority targets have been identified during the evaluation of historical geochemistry, 2011 soil geochemical surveys, and 2011 airborne geophysical data. Additional targets are anticipated.
Field work will be completed in summer 2012 with the objective of bringing remaining targets to the drill testing stage for Phase II drilling in late 2012.