Posts Tagged gold

Chihuahua’s geophysical survey

Posted by AP on Wednesday, 25 August, 2010

Dia Bras is a Canadian exploration mining company focused on precious and base metals in Chihuahua State and other areas of northern Mexico.

Dia Bras Exploration Inc. reports that a major geophysical survey has been completed on its 100% owned Bolivar Property which is not subject to any royalties, Chihuahua State, Mexico. Field checks have been conducted to examine anomalies detected during a recently completed Titan 24 Induced Polarization (IP)/resistivity survey contracted to Quantec Geoscience of Toronto, Ontario.  Two areas were covered during the survey, where eight lines totaling 9,000 metres were measured across the Banda Fault near the Bolivar Mine, and three lines totaling 2,700 metres were measured at the La Cascada high-sulfidation gold deposit. Condor Consulting of Lakewood, Colorado, has been retained by Dia Bras to assist in the planning of the IP/resistivity surveys and with the interpretation of the results.

“The surveys just completed at La Cascada and the Banda Fault areas have shown very promising results that confirm important mineralization can occur in these areas,” stated Daniel Tellechea, President & CEO. “These very positive results focus our drilling on targets that have the potential to host very important mineralization. At La Cascada, our target is a multi-million ounce gold deposit, while at the Banda Fault area our target is a major, stratabound skarn or replacement deposit with copper-zinc grades equivalent to what we have been producing from the Bolivar Mine for the past five years.”

La Cascada

Three survey lines at La Cascada were completed in this area of rugged terrain: a 1,000-m-long N-S line and two E-W lines (800 and 900 m), which resulted in detection of three significant chargeability and resistivity anomalies – all of which are associated with anomalous grades of gold in outcrop, as evidenced by the results of chip-channel sampling over 2-metre widths. The southernmost anomaly on the N-S line starts at 50 m depth. Sampling of outcrops over an area of 50 x 85 m was conducted prior to the survey and the six samples assayed 0.6 – 1.1 g/t gold.

Sampling in the area of the central anomaly (also starting at 50 m depth), completed over a 40 x 50 m area (also prior to the survey) resulted in the eight samples assaying 0.5 – 2.1 g/t gold.

Sampling in the area of the northernmost anomaly, completed over a 10 x 20 m area (also prior to the survey) resulted in the three samples assaying 0.4 – 3.0 g/t gold.

The sampled areas between the anomalies yielded very low grades of gold, generally less than 0.1 g/t.

These survey results are very positive because of the strong correlation between elevated gold in outcrop and strong chargeability anomalies. This correlation indicates that the probability that the three chargeability anomalies are associated with gold mineralization at shallow depths is very high.

The truncation of the chargeability anomalies at an apparent constant 50 m depth is inferred to be the result of oxidation of the high-sulfide zones, remnants of which appear on the surface as 1-2% pyrite and abundant jarosite, hematite and goethite.

Drilling will target the near-surface, coincident strong chargeability (IP) and resistivity zones detected during the survey. Drilling is scheduled to commence during late August, when an access road is completed to the selected drill sites. At least ten holes of 200-300 m depth each are planned for this first phase of drilling.

The area surveyed is only about 10% of the area known to host strong gold anomalies, where sampling has returned values up to 15 g/t Au.

Banda Fault

Eight E-W lines 600 m to 1500 m in length at the Banda Fault area were measured across this major, NW-trending fault. The objective of the survey was to locate geophysical anomalies associated with NW-trending and NE-trending faults. Faults of these orientations control the location of high-grade copper-zinc mineralization in the Bolivar Mine. The anomalies can be separated into two general groups: near-surface anomalies and sub-surface anomalies.

Each of the near-surface anomalies occurs in andesite and is associated with elevated sulfide content, usually 1-3%, epidote and minor silicification. The anomalies are generally on low hills, reflecting their being underlain by the resistant silicified rock. The anomalies on lines 3, 5, 6 & 7 indicate a NW-trending structure (herein named the Nathalie Fault) parallel to the Banda Fault that passes near Increíble. There are significant geochemical anomalies associated with this structure, which may be a very important feeder of mineralizing fluids into the metasediments. This structure may be the main feeder of the mineralizing fluids, and not the Banda Fault as has been inferred prior to the survey.

The sub-surface anomalies are generally located west of the Banda Fault and are in a position to be the stratabound, large-tonnage replacement and/or skarn deposits that have been a major target for the Company.

The survey results are very encouraging. It has identified the Nathalie Fault, which is now inferred to be the major feeder for mineralization at the property. Drill hole 287, completed in March 2009, was drilled to a depth of 650 metres as a test of the Banda Fault and was placed between the Banda Fault and the Nathalie Fault. It was collared on what is now known to be the edges of a chargeability anomaly, a magnetic low and a moderate resistivity anomaly. The chargeability anomaly tops out at 100 m depth at the drill site, and at this depth, the hole entered increasingly skarnified andesite with disseminated sulfide mineralization. At 450 m depth, the hole entered the metasediments, which are present as marble and represent the upper portion of the metasedimentary section – above the Upper Skarn target. That is, the hole did not reach the target of the Upper Skarn horizon.

The new interpretation is that the Nathalie Fault, which is west of hole 287, will have on its west side the Upper Skarn target at a shallower depth, possibly 300-400 m. This area will be drilled by placing a NE-SW line of holes about 200 m NW of hole 287 and straddling the Nathalie Fault. This is an important target.



IP Survey Expands Potential of Schaft Creek Deposit

Posted by AP on Monday, 16 August, 2010

Copper Fox Metals Inc.  provides an update on the results and interpretation of the Quantec Geosciences Ltd. “State of the Art” Quantec Titan-24 DCIP and MT geophysical survey, on the Schaft Creek copper-gold-molybdenum-silver deposit located in Northwest British Columbia.

Highlights:

  • the Induced Polarization/Resistivity (IP) anomalies outlined by the Survey strongly suggest that the Schaft Creek mineral deposit extends a significant distance to the east and at depth beyond the limits of the current diamond drilling,
  • the Survey indicates that the IP anomalies that correspond to the Main, Paramount and Breccia Zones of the Schaft Creek mineral deposit are open to the north and south, and
  • the Induced Polarization anomalies outlined in 2008 have been confirmed by the Survey but these responses are interpreted to represent a geological feature, not mineralization.

Mr. Elmer Stewart, President of Copper Fox stated that “Our primary objective is to complete the feasibility study by the end of 2010. If the IP anomalies are an indication of the size of the Schaft Creek deposit, then the deposit is substantially larger than what has been defined to date. A substantial amount of diamond drilling would be required to define the limits of the deposit. Our 2010 diamond drilling program; although not designed for exploration has been adjusted to test the large IP anomaly identified on Section 6361000 under Mount LaCasse”.

Schaft Creek Deposit:
The Schaft Creek mineral deposit consists of three mineralized zones, being the Main, West Breccia and Paramount (see About Copper Fox for resource estimate of the Schaft Creek deposit).

Quantec Titan-24 DCIP and MT Survey:
Quantec Geosciences Limited (Quantec) was retained to further define two Induced Polarization anomalies located in the area of the proposed mill site in 2008. In order to better interpret any anomalies located by the Survey, the scope of the Survey was extended to include the portions of the Schaft Creek deposit where diamond drilling had been completed. The lithologies, sulphide content and metal grades obtained from the diamond drilling completed on the geophysical Sections were used in the interpretation of the geophysical responses obtained by the Survey.

A comparison of the geophysical response for the Null referenced, DC referenced, Resistivity and MT pseudo-sections shows excellent correlation. To view a geophysical model of the Schaft Creek mineral deposit based on the Null reference chargeability click here. A brief discussion of the IP anomalies defined on each Section is presented below:

Section 6361000:
The survey on this line was completed as a west and east portion due to hazardous terrain conditions. On the west side of the line, the IP anomaly is approximately 1,200 m wide and extends to a depth of 750 m. The western 400 m wide portion of this anomaly corresponds to the Paramount/West Breccia Zone where significant copper-molybdenum-gold-silver mineralization has been defined to an average depth of 400 m below surface. The 800 m wide portion of the IP anomaly located east of the Paramount/West Breccia Zone dips to the east under Mount LaCasse, is open at depth and requires testing by diamond drilling.

The east side of Section 6361000 covers the area of the proposed mill site where the two IP anomalies were located in 2008. The Quantec Survey located the 2008 IP anomalies and based on the diamond drilling information and the strength of the geophysical response, these anomalies are interpreted to represent a geological feature, not sulphide mineralization.

Section 6360600:
The IP anomaly is 1,500 m wide and extends to a depth of at least 750 m below surface. The western 550 m wide portion of this anomaly corresponds to the Paramount/West Breccia Zone where copper-molybdenum-gold-silver mineralization has been drilled to an average depth of 500 m below surface. The 850 m wide portion of this IP anomaly located east of the Paramount/West Breccia Zone dips to the east under Mount LaCasse and requires testing by diamond drilling.

Section 6360200:
The IP anomaly is 1,600 m wide and extends to a depth of 800 m at the center of the anomaly. This anomaly corresponds to the Main and West Breccia Zones where significant copper-molybdenum-gold-silver mineralization and has been intersected by drilling to an average depth of 500 metres below surface. The IP anomaly indicates that copper-molybdenum-gold-silver mineralization extend to a considerable depth below the 500 metre level. A 500 m wide portion of this anomaly located east of the Main Zone requires testing by diamond drilling.

Section 6350800:
Two IP anomalies have been located on this Section. The first anomaly is approximately 250 m wide, has a depth of 300 m and requires testing by diamond drilling. The second IP anomaly is 1,450 m wide; has a depth of approximately 600 m on the western side and a depth of 450 m on the east side. The IP anomaly corresponds to the Main and West Breccia Zones where significant copper-molybdenum-gold-silver mineralization has been drilled to a depth of 250 m. The portion of the IP anomaly below the 250 m level requires testing by diamond drilling.

Section 6350400:
The IP anomaly is 1,500 m wide and has an average thickness of 400 m. The western portion of this anomaly measures 300 m wide by 450 m deep and is located at a depth of 200 m below surface (interpreted to be faulted downward). The remaining 1,200 m wide portion of the anomaly is relatively flat lying and has an average depth of approximately 400 m. This anomaly corresponds to the Main and West Breccia Zones where significant copper-molybdenum-gold-silver mineralization has been drilled to a depth of 250 m below surface. A 250 m wide section on the east side of this anomaly requires testing by diamond drilling. The IP anomaly is open along strike to the south.

Quantec Titan-24 Survey Parameters:
The Quantec Titan-24 DCIP and MT system is a State of the Art geophysical tool used to explore forcopper mineralization. The Survey was completed on five lines surveyed by differential GPS instrumentation over the area of the proposed mill site and further to the west over the Schaft Creek deposit where a substantial amount of diamond drilling had been completed. Survey Sections were completed at 100 m station intervals and 400 metre line spacing. A total of 28.2 kms of DC/IP survey line (plus current extensions) and 22 kms of MT data were collected. Magnetotelluric, Resistivity and Chargeability data were collected at 50 metres stations along each Section. The Titan-24 survey typically images DC resistivity to depths of 500-750 m and the IP typically images to 500-750 m, in sub-vertical tabular geologic settings and up to 50% more for sub-horizontal settings. The interpretation of the data was completed by Quantec utilizing the lithology, estimated sulphide content and analytical results from the diamond drill holes completed on or near the geophysical Sections. The 3D inversion of the DC and IP data was completed using the UBC3D inversion code and is shown as Null referenced and DC referenced chargeability. In several cases, not all of the line could be surveyed due to hazardous terrain conditions. The 14 mRad contour on the UBC smoothed, Null Referenced pseudo-section was used to determine anomalous chargeability.


Extending Gold And Base Metal Potential with 3D IP survey

Posted by AP on Tuesday, 10 August, 2010

Indonesian-focussed Robust Resources has revealed that a 3D IP-Resistivity survey over the flagship Lakuwahi target, as well as new drilling results, have significantly extended the discovery target zones and therefore the gold and base metal resource potential on Romang Island.

The IP-Resistivity geophysical survey commenced on 24 March 2010, and field data collection is 50% complete, with 20% of information processed and modelled.

The geophysics and drilling has confirmed a well-defined geophysical (resistivity) anomaly area that is 20-times larger than current Batu Mas drilled prospect and remains open.  Importantly, there appears to be continuity of precious and base metal mineralisation structure confirmed between main drilled prospects of Batu Mas and Batu Hitam (over 2 kilometre strike length).

Recent drilling at Batu Mas and Batu Hitam continue the strong track record of results with thick intersections of precious metals and base metals on both prospects. In total, results for fourteen holes have been received, eleven of which intersected mineralisation of potential economic significance.

Contours of magnetic susceptibility from 3D modelling showing the large 13 km 2 alteration system within the Lakuwahi Caldera. Billiton drilling (in black) and Robust drilling (in red) has tested less than 0.2% of this system.

Managing director Gary Lewis said, “In this latest stage of our exploration program, Robust has done the reverse of most companies in that we have drilled prior to embarking on the geophysical studies which puts us in the now fortunate position of being able to calibrate the geophysics with drilling data.”

“Based on the excellent correlation of geophysical anomalism with the drilling data, the results have not only extended the Batu Mas target zone by around 20-times its current size, but also demonstrated that the geophysical anomaly clearly links the Batu Mas and Batu Hitam prospects, he said.”

“Whilst the Company had long suspected that this was the case, these latest results provide us with more confidence to move towards defining a maiden JORC resource from these two prospects alone. In addition, the IP has also identified a number of new drill targets, in particular those hidden under limestone cover, which we will shortly begin to target with our four owner-operated rigs.”

Batu Mas

Results for nine diamond drill holes have been recently received, with seven of the holes with coincident geophysical anomalism intersecting precious and / or base metals of potential economic significance. The very close fit between the drilling results at Batu Mas and the resistivity anomalism is especially significant, both in relation to validating the geophysical methodology and for demonstrating the extent of the potential resource at Batu Mas. The positive drilling results (both gold/silver and base metals) are all contained within the geophysically defined 50 Ohm-m contour, which concurs closely with the grade-thickness.

Gary Lewis continued, “The correlation of the positive drilling results and the resistivity represents a valuable enhancement of our understanding of the Lakuwahi mineralisation. We now have confidence that the extensions to the Batu Mas mineralisation and the new targets indicated by the resistivity, which so far is indicated to be in the order of 20-times the size of the Batu Mas area itself, are indeed likely to contain significant precious metal and base metal mineralisation.
Robust’s current drilling plan has been modified in light of the new results and testing of the Batu Mas
North target has already commenced.”


1970′s IP for the new exploration program

Posted by AP on Sunday, 8 August, 2010

Linear Metals Corporation announces that it has initiated a two-stage exploration program on its LaMorena Copper-Silver Gold project in Coahuilla State, Northern Mexico. The project is located approximately 250 kilometres southeast of Chihuahua, and 40 kilometres north of the Hercules iron mine (skarn), within a known belt of deformed sediments that host Carbonate Replacement Deposits (“CRD”s) such as MAG Silver’s recent Cinco de Mayo discovery, and at least in part, Goldcorp’s Penasquito deposit. Within this overall belt, LaMorena is located at the intersection of prominent regional northeast and northwest trending faults.

Schematic model showing the mineralization style and targets at the La Morena Property.

Previous drilling by Linear Metals and Linear Gold Corp., as well as earlier historic drill holes were focused on outcropping, sub-vertical vein structures and not the potential for deeper, sub-horizontal CRD (“Manto”) and skarn mineralization. Even so, previous drilling intersected significant copper and silver mineralization with intervals of up to 1,245 g/t silver and based on re-examination of drill logs, the better mineralized intervals in drill-holes M-1, M-2, and LM-4, may be from sub-horizontal CRD horizons.

Exploration at LaMorena has commenced this week and will include an initial geophysics program followed by diamond drilling. The exploration program will begin with ground truthing of the near-surface induced polarization (“IP”) chargeability-resistivity targets interpreted from the historic IP survey. This will be followed by “confirmation” re-surveying of most targets, especially the deep targets, using modern, deeper-penetrating IP equipment.

Area of high resistivity at the La Morena Property showing the drill-hole location and a circular topographic depression in the area.

As phase two of the exploration program, approximately 1,500 metres of diamond drilling will test the highest priority IP targets.

Re-interpretation of historic IP survey data (1970′s), recently recovered from the JICA archives, has confirmed that most of the originally interpreted near surface targets remain untested, while also defining six new untested deeper chargeability targets identified at 75 to 175 metres vertical depth.

The historic IP targets are located within the halo of a large, 1.5 kilometres x 3.5 kilometres, ovoid area of re-crystallized and lesser skarn-altered limestones of the Aurora, La Pena and El Cupido formations. The latter two formations are particularly prospective regionally, as they host numerous known CRD deposits such as Providencia-Concepcion Del Oro. The altered area is presumably underlain at depth by an intrusive stock and/or dyke swarm, indicating a potential for skarn and perhaps porphyry-style mineralization.



GSC Airborne Geophysics covers Nox Fort Property

Posted by AP on Friday, 6 August, 2010

A recently released helicopter-airborne geophysical survey completed by the Geological Survey of Canada (GSC) covered a portion of the southern part of the Kootenay Arc in southwestern BC, including most of the Company’s Nox Fort Property.

The Nox Fort Property, located southwest of Salmo, contains several gold prospects including a number of high-priority exploration targets. The geology of the Property is diverse, consisting of pelitic and volcanic sediments, and large granitic intrusions which, at their contacts holds the potential for Reduced Intrusion Related Gold Deposits (RIRGD). The former Bunker Hill mine in the center of the Property is recognized as a RIRGD-type Au-Bi-Te prospect. Other gold occurrences are known including the Bluestar showing which contains gold along with silver and elevated copper, lead and zinc values. The Property has not been a target for base metal exploration by the Company although a past producer, Remac Zinc, is located to the south of the property.

The GSC airborne survey was conducted through the autumn and winter of 2008-09 by Fugro Airborne Surveys using a helicopter-borne time-domain electromagnetic (EM) system in conjunction with a separate magnetometer survey. The survey was flown at 200-meter line spacings with readings recorded at ground elevations of less than 500 meters. The GSC issued a series of maps on 30 June 2010 including Open Files 6194 and 6195 which cover all but the northwest portion of the Nox Fort Property.

The magnetometer data is presented as contoured readings while the EM response is represented by point anomalies of various strengths. The Company has produced generalized highlight maps to accompany this press release at its website.

EM Anomalies

Flanking the Bunker Hill mine are a pair of 3 kilometer-long northeast trending clusters of EM anomalies that fall southeast and northwest of the mine area. That northeast trend generally conforms to the strike direction of the underlying pelitic and volcanic sediments.

The largest cluster of EM anomalies begins south of the Bunker Hill mine then widens as it runs southeast and east of the mine before terminating at the Wallack Creek stock. In spite of the Company completing a number of reconnaissance traverses in that area during its field programs of 2008 and 2009, it is not clear what geological feature can be attributed to that response.

Paralleling Limpid Creek northwest and north of the Bunker Hill mine, the string of GSC survey airborne EM anomalies are coincident with a pair of localized soil geochemical anomalies and a very prominent ground geophysical anomaly reported by earlier workers. Zinc was the prominent soil geochemical anomaly often supported by silver, lead and nickel. Historic ground geophysical survey EM and magnetic anomalies are coincident and enveloped by the new GSC airborne trend.

A scattershot of EM anomalies northwest of Bluestar falls on ground that was partly covered in a reconnaissance till survey by the Company in 2008. Some of those samples were somewhat elevated in gold and arsenic, and another sample was anomalous in lead. This area is also intersected the Waneta Fault, a significant regional structure that may have had an influence on the prospective nature of that area.

Magnetic Anomalies

Magnetic response on the Property is dominated by a large positive anomaly centered over the granitic Wallack Creek stock that extends to the east, outside the mapped margin of the intrusive. The magnetic response is generally quieter elsewhere on the Property.

Northwest of the Bluestar gold occurrence, a magnetic high adds interest to the area. The Waneta Fault also crosses through this anomaly where geochemical sampling completed by the Company has targeted the area for mineral exploration.

North of the Bunker Hill mine a magnetic low straddling Limpid Creek may be significant as it corresponds to a small mineralized showing located by the Company in its 2008 field program. A sample of that quartz lens assayed 1.1 gm/tne gold and 4.9 gm/tne silver. Anomalous stream sediments, gathered by the Company in 2008 and last year, just upstream, are part of the high-priority north Limpid Creek exploration target that extends to the northeast for 1.5 kilometres.

The Company is pleased to have this additional new GSC airborne geophysical survey data and maps to assist in its future decision making process.


Detail High Resolution Aero-magnetics, Horizontal Gradiometer, Radiometrics and XDS/VLF-EM for Creso

Posted by AP on Thursday, 1 July, 2010

Creso Exploration Inc. announces the award of a 5000 meter drilling program on the Shining Tree properties that will start this week including deepening by a further 300 m the Minto Hole #2 (18.2 g/t Au over 65.7 meters from 49.3 m to 115 m and 4.61 g/t Au over 79.6 meters from 132.4 m to 212 m – see) in order to do more down-hole geophysics and better delineate the gold bearing zone. Concurrently, Creso will initiate a detailed helicopter survey at 30m line spacing that will focus primarily on the Minto, Matona, Tyranite and Duggan Zones to outline known gold mineralization areas.

Creso has signed two airborne geophysical contracts with Terraquest Ltd both of which will start in July. The helicopter survey which will include Single Sensor High Resolution Aero-magnetics, Radiometrics and XDS/VLF-EM systems is based on 1779 line kilometers to be flown at low altitude with a 30m line spacing. The fix-wing aircraft will survey the entire eastern half of the Shining Tree properties covering large areas of the Tyrrell, Knight and Milner Townships survey and will include High Resolution Aero-magnetics, Horizontal Gradiometer, Radiometrics and XDS/VLF-EM systems over 5853 line kilometers at a 100m line spacing.

The combination of these two surveys is particularly well adapted to the Shining Tree Area where contrasts in hydrothermal alteration, mineralized volcanic and intrusive rocks, and complex structural features are common. Radiometric surveys will aid in delineating potassium enriched alteration zones commonly associated with gold mineralization in the area.


HEM and Mag Survey at Mines Point Gold Project

Posted by AP on Wednesday, 30 June, 2010

Kodiak Exploration Limited announces the
commencement of a helicopter EM and Magnetics survey at its Mine Point Gold Project in Manitoba.
The survey will cover a 140 square kilometre area in the central portion of the Mines Point target area
focusing on tightly folded Archean banded iron formation (BIF) adjacent to a regional scale shear zone.
Previous wide-spaced airborne mag surveys had identified five priority target areas; the current HEM
program will be flown with a tight line spacing (75 metres) in order to constrain the target areas prior to
ground exploration. The survey is expected to be completed by mid-July with follow-up work to
commence once the data has been received and interpreted.
The Mines Point Gold Project is located within the Archean God’s Lake – Sachigo Volcanic Belt in north
central Manitoba about 35 kilometres north of Oxford House. The 432 square kilometre property covers a
40 kilometre long trend of prospective Archean BIF. Several significant gold deposits with resources in
excess of 1.5M ounces have been discovered in the area in a similar geological setting: Monument Bay,
Stull Lake and Oxford Lake. These deposits and the Mines Point Project geologically resemble the large
multi-million ounce gold deposits at Lupin, NWT, Musselwhite, Ontario and Casa Berardi, Quebec. BIFhosted
gold deposits are attractive exploration targets due to the consistency and continuity of gold grades
and the lateral persistence of the host rock, potentially generating large volume gold deposits.

Cresco’s success on the Minto Project

Posted by AP on Tuesday, 29 June, 2010

Creso Exploration intersects 65.7 meters of 18.2 g/t g and 79.6 meters of 4.61 g/t Gold in Hole #2 on the Minto Project.

The MINTO Project is located half‐way between Timmins and Sudbury in Ontario and approximately 30 kilometers South‐West of NorthGate Minerals Corporation’s
Young‐Davidson gold deposit. The 2009 NQ diamond drilling two‐hole program best results are from Hole #2.

The Minto showing consists of a pod of carbonate sulphide breccias containing an estimated tonnage of 225,000 tons (204,000 t) grading 0.2 oz per t (6.8 g/t) Au to a vertical depth of 225m as determined and reported in 1984.  Gold is related to pyrite and quartz veining trending north south and northeast southwest.

From surface geology the upper zone presents a true width of 30 meters. The bottom zone is new and no true width has been determined yet. According to JVX Ltd, the down‐hole geophysical interpretation completed on the Minto property, indicates that the mineralized body extends in a north‐west/south‐east direction at a depth of 50 to 170 meters and is open at depth. The Corporation will drill a step‐out hole for the purpose of further defining the location of the body using more down‐hole geophysics.

In May 2010, Borehole Induced Polarization (BHIP) surveys were done on the Tyranite and Minto properties. Results from the Tyranite hole are not yet available. 3D conductivity and chargeability models from boreholes gradient IP data have been calculated for holes M‐0901 and M‐0902 on the Minto property.

The Corporation has completed down‐hole geophysical testing on the MacMurchy property and intersected 7.4% nickel and 2 g/t platinum and palladium over one meter in hole D6‐07 confirming the nickel potential of the area. The MacMurchy property is located in the southwest corner of the MacMurchy Township some 10 km SSW of the Minto property.

The Corporation is currently evaluating bids for an agreement for a 200‐kilometer low level airborne (Mag, VLFEM, and radiometric) geophysical survey to cover the Minto, Tyranite and Duggan zone on a 30‐metre spacing in order to define geological structures and mineralized zones. Upon completion of the geophysical survey, the Corporation will undertake a 5000‐meter drill program on the Minto, Tyranite and Duggan properties.

Conductivity Model

The 3D conductivity model represented by an iso-surface value of 0.005 S/m shows three conductive features. The first conductive feature is at shallow depth and is strong in the west direction as well as in the east direction. The second conductive feature is disseminated in the middle while the third conductive feature is at depth and to the southeast. 

Chargeability Model

The 3D chageability model shows three chargeable features. The third chargeable feature (northwest – southeast) at depth is strongest. The second and third inversion shells correlate with the gold mineralization.


Results of Dog Lake Geophysical Survey

Posted by AP on Saturday, 26 June, 2010

Auric Mining Corp. announces the results of an Airborne magnetic and VLF-EM Survey conducted for the company by Terraquest Ltd. of Markham Ontario. Terraquest Ltd. was contracted to perform a VLF Electromagnetic survey of the Company’s property in the Dog Lake area of Northern Ontario.

The survey confirmed a number of gold showings on the shoreline of Dog Lake, located a few hundred meters to the west of the property boundary. In the past there has been considerable ground geophysics and drilling conducted in this area. The magnetic maps show the presence of narrow magnetic linear features striking from a North to East trend and appear to occupy all of the three major rock types. At least ten diabase dykes have been interpreted from the second derivative pattern and almost all are certain to belong to the Matachewn-Hearts swarm that is prevalent in the area. In the southeast corner a lateral displacement of three dykes are interpreted as a fault.

One of the more significant features of the magnetic maps is the presence of narrow magnetic linear features striking from North to East. These are illustrated on the interpretation maps and appear to occupy all three major rock types. The OGS map shows several major faults or deformation zones in the general area and with the same strike direction. It is proposed that these magnetic linears could be related to them. They could represent fracture elements in a broad deformation zone and since they stretch into the gold showings to the west are of considerable interest now as possible channels of mineralization.

Based on the conclusions and recommendations of the VLF-EM survey, possible new exploration targets have been identified and further exploration recommended. An exploration program has been adopted and will be carried out in the coming months.

Auric Mining Corp. plans to do another similar survey in the near future using additional technology to better define these results before a full field exploration program commences this summer.

  • Previous exploration in the Wawa has discovered numerous deposits of small diamonds within metamorphosed Archean basement rocks.
  • Dianor has discovered rocks with encouraging grades and stone size distribution directly south of the Mori-Metalex ground.
  • Island Gold Mine has Proven and Probable Reserves of 1,013,854 tonnes at a grade of 8.55 g/t gold for a total of 278,711 ounces of gold (NI 43-101 compliant report by GENIVAR) Project has additional Measured and Indicated Resources 454,705 tonnes at a grade of 10.26 g/t for a total of 149,972 ounces (NI 43-101 compliant report by GENIVAR).

10.50 metres of 7.47 g/t Gold on Goliath Project

Posted by AP on Monday, 21 June, 2010

The Goliath Gold Project is located in the Kenora Mining District in northwestern Ontario, 20 km east of the City of Dryden and 325 km northwest of the port City of Thunder Bay.

Treasury Metals began its 2009 exploration program in early June and this year’s exploration program will consist of a combination of surface exploration and diamond drilling programs. The Company is planning to carry out property-wide surface exploration, which will include developing drill targets along strike to the west and northeast of the Thunder Lake Gold Deposit. The surface program will also use the Company’s extensive historical database and more recent data from its ground and airborne geophysical surveys to target other areas on the ~44 km2 property.

Historical reports describe alteration and anomalous gold concentrations in several areas on the Company’s property that are off trend from the Thunder Lake Gold Deposit.

In conjunction with the surface program, the Company is planning diamond drilling aimed at increasing and upgrading mineral resources within the area of the current resource and along strike and testing exploration targets defined from the surface exploration program.

Treasury Metals has completed the following exploration work on the Goliath Gold Project as of the end of December, 2009:

  • 2,165 line kilometres of high-resolution airborne magnetometer survey over the entire project area.
  • 146.36 line kilometres of surface geophysics (induced-polarization) focusing on the area of the Thunder Lake Deposit.

Treasury Metals Inc.  announces further high-grade gold assay results from its recently completed +5,000 metre diamond drilling program targeting and defining high-grade gold structures on its Goliath Gold Project. The 100% owned Goliath Gold Project is located alongside the Trans-Canada Highway about 20 kilometres east of the City of Dryden, Ontario.

These latest results are from drill holes that were designed to further test and delineate two separate, high-grade gold structures located in the east and west regions of the Thunder Lake gold deposit. Drilling on the eastern structure returned multiple intersections of >6.0 g/t Au. Of note is drill hole TL10-98 that intersected 10.50 metres of 7.47 g/t Au, including 1.50 metres of 20.79 g/t Au, confirming the high-grade nature of this deposit. Further drilling is required to delineate these high-grade structures and the areas of lower grade gold between these structures. Previous drilling has confirmed vertical continuity of high-grade gold-bearing structures to depths of more than 800 metres. The Thunder Lake gold deposit is open at depth and along strike to the west and northeast.

Treasury contracted JVX Ltd. to complete a spectral induced polarisation (IP/Res) survey at theProject in March 2008. The survey coverage totalled 23 line-km over 230 ha, covering theThunder Lake deposit and extending towards the west and south (Figure 10-5). The surveyinstrumentation consisted of a Scintrex IPC-7 (2.5 kW) transmitter and Scintrex IPR-12 receivers.This receiver system allows operators to access each reading independently and makeadjustments when necessary to ensure that the chargeability data is repeatable and that thespectral parameters are calculated properly.The survey employed the pole-dipole array method, which varies slightly from the dipole-dipolearray. The pole-dipole method begins with a current separation of 25 m and increases in spacingwhich results in higher currents in later dipoles, lowering the recorded noise. However the IPresponse is asymmetric. The array orientation must be taken into account during interpretation.The array separation collection ran from 1 to 8 (n=1 to 8). Although “deep cuts” (a=25 m, n=9 to16) were planned to image depths of 300 m to 400 m, time and weather constraints did not allowfor the data collection. The survey detected extensive conductive surficial overburden, with 43% of the survey area at 250 Ωm or less. Conductive overburden can mask chargeable bodies, and thus a large volume of ore or high volume percentage of metallic sulphides must be present to overcome this problem. However, JVX noted that despite the conductive overburden responses detected, the overburden conductivity was not as high as initially anticipated (JVX, 2008).