Posts Tagged Crone

Graphite discoveries in Northeastern Ontario

Posted by on Thursday, 16 May, 2013

Zenyatta Ventures Ltd. announced a drilling update on the 100% owned Albany (Hydrothermal) Graphite Deposit, located in northeastern Ontario, Canada.

The first drill hole (Z13-4F10) intersected 363 metres (‘m’) of graphite mineralization from 47.0 m to 410.0 m.  This represents the widest zone of graphite material intersected to date on the Albany deposit.  The hole, which was drilled at a 180 azimuth and -65 dip, was designed to test between previously drilled holes 5 and 9.  From surface to 41.0 m hole 10 intersected overburden and from 41.0m to 47.0 m intersected Paleozoic limestone.  Graphitic overprinting was encountered from 47.0 m to 87.0 m, while the strongest graphitic mineralization was intersected from 87.0 m to 410.0 m. Drilling shows different types of graphite mineralization consisting of clasts of graphite vein material, disseminated graphite matrix and discrete graphite veins / veinlets as part of a large breccia pipe.  Geometry and true width of the graphite breccia pipe is difficult to determine at this point and will require much more drilling.

The Company will continue to define the size and grade of this rare, ‘vein-type’ or hydrothermal-style graphite deposit.  The goal of the current program will be to expand on a 2012 drilling campaign that intersected a large mineralized zone of graphitic breccia and veining from widely spaced drill holes.  This previous nine (9) hole drill program succeeded in establishing widespread graphite mineralization laterally for several hundred metres and to a vertical depth of 400m, where it remains open. The current drilling will consist of a minimum of 10,000m and will further test the extent of the Geotech VTEM airborne conductor. The program will require 40 holes and is expected to continue until August, after which a NI 43-101 resource estimate will be calculated. The Company anticipates a steady flow of information from drilling activities and continued metallurgical work from this fully funded $4 million exploration program for the balance of 2013.

14 May 2013

Zenyatta Ventures Ltd. announced the following significant assay results from the first hole (#10) of the current campaign on the 100% owned Albany (Hydrothermal) Graphite Deposit, located in northeastern Ontario, Canada.   Drill hole 10 intersected 360.8 metres (‘m’) of graphite mineralization from 49.0 m to 409.8 m yielding an average grade of 5.1% Carbon (‘C’).  This represents the widest zone of graphite material intersected to date on the Albany deposit.  The hole, which was drilled at a 180° azimuth and -65° dip, was designed to test between previously drilled holes 4, 5 and 9.  Five more holes have since been completed, all of which yielded broad intervals of graphite mineralization from visual observations of drill core as described below.  Holes 11 through 15 have been designed to start outside the limit of the indicated anomaly and were angled to help define and confirm the overall geometry of the pipe-like body.  Drill hole data from all 15 holes is shown in a table at the end of this press release.

• Drill hole 11 intersected 202.0 m of graphite mineralization from 393.0 m to 595.0 m.

• Drill hole 12 intersected 195.0 m of graphite mineralization from   90.0 m to 285.0 m.

• Drill hole 13 intersected 219.0 m of graphite mineralization from   96.0 m to 315.0 m.

• Drill hole 14 intersected 286.9 m of graphite mineralization from 108.8 m to 395.7 m and a second zone of 127.3 m of graphite mineralization from 431.3 m to 558.0 m

• Drill hole 15 intersected 301.9 m of graphite mineralization from   63.3 m to 365.2 m.   (All lengths reported are drill intersected core lengths and do not represent true widths)

Aubrey Eveleigh, President and CEO stated “These latest results confirm the exceptional size potential of the Albany graphite deposit and along with the previously announced ultra-high purity (>99.99% C) values, underpins Zenyatta’s extraordinary graphite project. Hole 10 represents the best grade drill intersection obtained to date and the more recent drill holes are confirming both the internal continuity and the extent of the deposit.”   Graphite mineralization appears to consist of graphitic breccia pipes which are typically surrounded by a zone of graphite overprinted syenite. Carbon analyses for drill holes 11 through 15 will be released once received.  Drill hole 16 has commenced, and the current campaign will continue until sufficient drill holes have been completed, following which a NI 43-101 compliant resource estimate will be prepared.  A plan map, section and drill hole table will be placed on the website today.

The Company has also completed a ground geophysical survey to better define the geometry of the Albany graphite breccia pipes and expects the full data to be released in the next few days once a final report has been completed by Crone Geophysics and Exploration Ltd. The survey has defined two adjacent, strongly conductive, geophysical (EM) anomalies that are roughly circular in shape.  Holes 10 through 15 were drilled on the eastern most anomaly (Eastern breccia pipe), and are suggesting an oval shaped body approximately 200 metres in a NW-SE long axis by approximately 125 metres NE-SW.  Additionally, hole 11 intersected mineralization at approximately 500 metres vertical depth.  Drill intercepts appear to be correlating well with the shape of the ground geophysical anomaly with additional drilling required to confirm this model. The western anomaly (Western breccia pipe), which appears to be larger, will also be fully tested during the current drill campaign.

Drilling program after airborne geophysics for VMS

Posted by on Saturday, 8 December, 2012

VMS Ventures Inc.  announces plans for a 2013 winter drilling program on its 100% owned Manitoba properties.

Neil Richardson, VMS Ventures COO states: “We have many quality targets this winter, but we are particularly excited to get the drills turning on our newly acquired Reed East and Reed West properties. We consider them highly prospective as they cover a large area of the same volcanic rock package that hosts our high grade Reed Copper Deposit and Reed North base metal occurrences. VMS deposits tend to occur in clusters, within a specific package of these types of volcanic rocks.”

Diamond drilling is scheduled to begin in February and is expected to continue through April. Plans call for a budget of approximately $1.2 million which includes drilling 3,000 to 3,400 metres in 16 to 20 diamond drill holes. All target areas are within the Flin Flon – Snow Lake VMS greenstone belt of Manitoba.

Reed East and Reed West are adjacent to our Joint Venture property with Hudbay Minerals, which hosts the Reed Copper Deposit, currently being developed into a mine. These properties include targets with coincident Mobile Metal Ion (MMI) zinc anomalies and VTEM anomalies.

—             The other winter 2013 targets on VMS Ventures’ 100% owned properties vary in their specific characteristics, but all are associated with geophysical EM conductors generally with associated magnetic anomalies and within interpreted volcanic host rocks. More detail will be provided on these targets in the New Year.

Applications for drill permits have been submitted to the Manitoba government. After drilling is concluded, holes with favourable mineralization, alteration or geology, will be surveyed with down the hole TEM using Koop Geotechnical. Koop will utilize borehole pulse electromagnetic equipment manufactured by Crone Geophysics.

Downhole Geophysical Survey on Magistral Deposits in Peru

Posted by on Wednesday, 26 October, 2011

Trevali Mining Corporation announces the results of an in-hole geophysical survey (DownHole ElectroMagnetics – DHEM) designed to image and target the geophysical responses from the Magistral deposits at depth and along-strike. Results of the survey conducted by Val D’Or Geophysics are interpreted to reflect the presence of a large mineralized body extending approximately 500 metres from known mineralization in the Magistral Deposits including drill hole SAN-173 which intercepted high-grade silver-lead-zinc mineralization at approximately 450 metres below the Magistral North deposit at 750 metres vertical depth (see NR 11-26 for details).

Six drill-holes were surveyed for a total of 7,914 metres using a 21-channel Crone EM Transmitter/Receiver unit with readings collected every 10 metres.

Petrophysical modeling – that is the measurement of the geophysical properties and characteristics of representative geological units and known mineralization (magnetic susceptibility, electromagnetic conductivity, galvanic resistivity and chargeability) – was also measured to aid in subsequent modeling and interpretation.

The DHEM results display a strong correlation (direct relation) with mineralization (pyrrhotite gangue) within which significant quantities of zinc-lead and silver mineralization occur in the defined Magistral deposits (Figure 2).

To view the two Figures associated with this News Release, please click the following link:

The geophysical response (EM) in the three deepest Magistral holes drilled to date (SAN-0170, 0173 and 0174 – see NR 11-26 for details) is constant and suggests the presence of a large geophysical conductor at depth and extending from and to the south-east for approximately 500 metres (Figure 1 & 2). The core of geophysical anomaly as presently defined is centred to the south of Magistral North and below the Magistral Central and South deposits suggesting that mineralization may merge at depth.

It should be noted that the geophysical anomaly remains open – the size of the anomaly and the distance it can be imaged or ‘seen’ is a limitation of the geophysical method – simply the amount of power available to charge the conductive body.

While the presence of a large geophysical anomaly spatially associated with known mineralization is encouraging the Company strongly cautions that the anomaly requires drill testing and geochemical analysis of any results in order to confirm whether significant mineralization may be present – no value may be assigned to the anomaly at this juncture in time – that is it remains an early stage exploration target.

Two exploration holes are currently targeting the anomaly at approximately 600-700 metres vertical depth and contingent on results additional drilling and geophysical surveying may be required going forward.

Property Background

The former Santander Mine is classified as a polymetallic High Temperature Carbonate (HTC) or Carbonate Replacement Deposit (CRD). Modern mining activities commenced on the principal Santander Pipe from 1958 until 1991 to an approximate depth of 480 metres.

Total production is estimated to be about 8 million tonnes averaging +7% zinc, 1 to 4% lead and 60 g/t silver with additional copper credits. Mineralization remains open at depth with reported zinc grades of 11% in multiple replacement or manto bodies.

An initial due diligence study in late 2007 undertaken by the Company confirmed the high-grade nature of the former producer with values up to 39.8% zinc, 8.98% lead, 324 g/t silver and 1.6% copper (see NR-07-01 for details) determined through re-sampling of outcropping mineralization and historical drillholes.

Typically, such Carbonate Replacement Deposits (CRDs) comprise multiple lens and orebodies and have the potential to form significant mining camps.

The 4,455-hectare (44 km2) property contains numerous outcropping polymetallic mineralized bodies (Magistral North, Central, South and Puajanca South).

Ground and airborne time-domain for Rocky Lake project

Posted by on Saturday, 30 April, 2011

QMC Quantum Minerals Corp. provides an update and announce that the Company has received permits for drilling on the Rocky Lake, Manitoba, Canada project from the Ministry of Innovation, Energy and Mines. Drilling is scheduled to start in the latter half of June, 2011 and it is intended to source drilling equipment available locally.

The Rocky Lake project is well situated in the mineral prolific region of the province some 50 km North West of The Pas. And, the city of Flin Flon with its smelter, is 65 km to the north with the Namew Lake Ni-Cu mine 1 km North West. The Pas – Flin Flon highway passes 14 km east of the property and the Hudson’s Bay rail line is 15 km to the East. The project is accessible the majority of the year by 4 wheel drive and year-round by all terrain vehicles (ATV). Important infrastructure including human, goods, services and supplies are all readily available.

QMC’s Rocky Lake property is composed of Mineral Exploration License No. 219A (5,000 hectares) and Jaln 1 Claim No. MB 7972 (256 hectares). The adjacent area surrounding 219A and the Jaln 1 are held as the Rocky-Namew Project, composed of Manitoba exploration licenses No. 358A, 359A and the Namew Lake Property is composed of exploration licenses 360A and 361A.

QMC’s drilling program will initially target the strong Pulse Domain Electromagnetic (PEM) conductor anomalies delineated by the 21 line km Crone geophysics survey completed on license no. 219A by QMC.  These PEM anomalies could well represent hidden massive sulphide bodies at depth. Total drilling footage is anticipated to be 5000 meters.

The Rocky Lake Copper prospect was discovered in June of 1987, when airborne geophysical surveys detected a 5 km. long conductor and further ground EM surveys outlined a 1500 meter long conductor associated with a magnetic high. Hudson Bay diamond drilled 10 NQ and BQ holes totaling 2,292 meters in three programs; five in 1987, three in1990 and two in 1991. The ground was subsequently acquired by QMC from 4920776 Manitoba Ltd. as Mineral Exploration License 219A. This Manitoba company, on behalf QMC, cut a new grid over the Hudson Bay anomaly and completed the Crone survey.

The main target on the Rocky Lake VMS property will be the copper occurrence because of the pertinent grades intersected by Hudson Bay Exploration and Development in the late 1980’s and early 1990’s. A total of ten holes were drilled over a length of 1 km., with the best intersection encountering 10.3 meters grading 0.38% Cu (including 4.3 metres @ 0.67% Cu) in RES-122. This intersection contained high-grade sections (up to 3.0% Cu across 0.3m) within the 10.3 m. The Crone PEM survey suggests that some of the strongest portions of the original Hudson Bay electromagnetic anomaly were not adequately tested. The drilling appears to have been carried out on the footwall side of the potential mineralized body, thereby missing the main target. Copper mineralization intersected in the Hudson Bay drilling is present as stringers and could represent footwall stringer mineralization adding credence that the main massive sulphide mineralized body may well have been missed.

In 1980, INCO conducted the initial exploration of Precambrian VMS deposits South of Flin Flon Snow Lake that is covered by Paleozoic sedimentary strata. Following on airborne electromagnetic-magnetic surveys and follow-up ground geophysical surveys, a limited number of diamond drill holes were completed. The Hudson Bay team completed airborne EM-magnetic surveys south of Flin Flon (Menard et al 1996) in the early 1980’s that delineated several conductors. Subsequent drilling led to the discovery of the Namew Lake metamorphosed magmatic Ni-Cu deposit in 1984. The Namew Lake mine was developed by Hudson Bay (60%) and Outukumpu Mines Ltd. (40%) and when the mine closed in 1993, it had produced 2.57 million tonnes grading 0.63% Cu and 1.79% Ni as well as 0.1 g/t Au, 4.1 g/t Ag, 0.5 g/t Pd and 0.6 g/t Pt (Menard et al, 1996).

QMC commissioned airborne Geotech VTEM plus survey to cover Rocky Lake project licenses and claims for a total of 2142 line kilometers. This is a follow-up of the PEM survey. As mentioned above the PEM survey returned strong conductor anomalies. It will be important to note comparisons of any potential Geotech VTEM anomalies to the PEM survey anomalies. This will aid identifying similar potential drilling targets on the other licenses.

Geotech’s VTEM plus Time Domain EM system has been shown to locate discrete conductive anomalies as well as mapping lateral and vertical variations in resistivity. The VTEM plus system is equipped with a high-sensitivity magnetic gradiometer for mapping geologic structure and lithology. Geotech is a leading innovator in the airborne electromagnetics industry through the development of new and progressive airborne geophysical technologies. These conductors could represent hidden volcanogenic massive sulphide mineralized bodies at depth.

Magnetometric resistivity method near Timmins

Posted by on Friday, 7 January, 2011

Red Pine Exploration to Commence Next Phase of Drilling on SaraCourt Property in Swayze Greenstone Belt, Near Timmins.

MacDonald Mines Acquires Hornby Properties with promising geophysical data

Posted by on Tuesday, 17 August, 2010

MacDonald Mines Exploration Ltd.  announces that it has finalized an agreement to acquire 100% of the Hornby and Pender Properties, located in the “Ring of Fire” area of the James Bay Lowlands, with Temex Resources Corp. An exploration update follows the agreement details below.

The Hornby Property

MacDonald Mines Hornby Property is located contiguous to the KWG/Spider “Big Daddy” chromite deposit. The Company believes, based on a total review of its airborne survey and historical exploration data, that the Hornby Property has the potential to host the extension of the Big Daddy deposit.

The Property also exhibits prospective volcanogenic massive sulfide (VMS) (copper, zinc and lead) geophysical targets and is on same stratigraphy as Spider/KWG McFauld’s Lake VMS discovery. Historical drilling in the proximity of this prospective target intersected VMS mineralization.

Exploration Update

As detailed in the Company’s recent press releases, MacDonald Mines has several significant mineral opportunities across multiple properties in the James Bay Lowlands. The spring 2010 drill program consisting of 26 holes, 4,471 meters and focused on the McNugget Property and identified new VMS mineralization of substance on four fold limbs.

A summary of the highlighted drill holes reported were as follows;

Copper (Cu)

  • Hole MN10-102 intersected 1.03% over 15 metres
  • Hole MN10-111 intersected 1.04% over 5 metres
  • Hole MN10-90 intersected 1.11% over 5 metres

Zinc (Zn)

  • Hole MN10-104 intersected 3.3% over 9 metres
  • Hole MN10-106 intersected 2.55% over 4 metres
  • Hole MN10-110 intersected 2.82% over 5 metres
  • Hole MN10-102 intersected 2.5% over 3 metres
  • Hole MN10-104 intersected 2.00% Zn and 0.88% Cu over 6 metres

Silver (Ag)

  • Hole MN10-87 intersected 13.32 g/t over 5.3 metres
  • Hole MN10-94 intersected 16.56 g/t over 4 metres
  • Hole MN10-102 intersected 11.67 g/t over 3 metres
  • Hole MN10-104 intersected 11.97 g/t over 3 metres

Final assays from this last phase of drilling are pending and will be reported once they have been received and reviewed by the Company.

This large VMS system, which is open in all directions and yields VMS mineralization over a potential cumulative strike length of approximately 20 kilometres, was described by consulting geologist Hadyn R. Butler, P.Geo, as potentially being a new VMS camp.

Next Phase of Drilling to Commence Early September With 2 Drills

Crone Geophysics’ down-hole and surface EM system was employed in the previous phases of exploration, assisting in the discovery of the four VMS mineralized fold limbs, and will again be utilized for the upcoming drill program for drill target control.

The Company will continue to operate two drills for this upcoming drill program and will focus on the positive results from its successful spring 2010 drilling program on the McNugget Property.

Targeting Nickel and VMS on McNugget Property


The pyrrhotite-chalcopyrite-sphalerite-pyrite mineralization observed in the core of the McNugget property is indicative of VMS mineralization. The pattern of chlorite and sericite alteration, coupled with varying Cu/Zn ratios and alteration index plots from available geochemistry, indicates that there are at least three separate hydrothermal discharge vents/centres found within the same stratigraphic horizon of a large fold complex (McNugget).

Sulphide mineralization observed in drill core generally appears between footwall metasediments and hangingwall felsic volcanics, a lithologic sequence indicative of a Bimodal-Siliciclastic VMS environment.

Based on alteration mineralogy, geochemical vector analysis and 3-D geophysical modelling, it appears that the significant VMS mineralization intersected to date is peripheral to the volcanic centres (sources).

The Company’s current information is pointing to the Fold Nose found on the property as the most immediate prospective appreciable VMS mineralization. A surface and airborne electromagnetic (EM) survey are currently underway on the Fold Nose – and these results will direct the drilling program.


The highest priority nickel target on the McNugget property remains to be in the vicinity of MN07-39. A completion of the airborne magnetic and EM, and Noront Resources’ recent image of the Eagles Nest indicates that the same magnetic horizon extends from the Noront discovery through the McNugget property – adjacent to MN07-39. Prior to further drilling, this area will be investigated further using the following geophysical techniques – VTEM and AeroTEM IV, magnetics, and Crone Geophysics surface and down-hole pulse EM system.

Continuation of EM targeting on Ring of Fire

Posted by on Tuesday, 6 July, 2010

MacDonald Mines Exploration Ltd. anounces that it has recommenced its 2010 exploration drilling program in the Ring of Fire, James Bay Lowlands.

The Company will be utilizing two drills for this phase of drilling and will focus on the results from its successful spring 2010 drilling program.

The spring 2010 drill program on its McNugget Property identified new volcanogenic massive sulfide (VMS) mineralization on four fold limbs.

Targeting Nickel and VMS on McNugget Property

“The McNugget Property has moderate to high potential for both Cu-Zn volcanogenic massive sulfide and Ni-Cu-PGE sulfide deposits.” – Dr. Tucker Barrie, P. Geo.
This phase of drilling will focus on five principal base metal occurrence areas: 1) Campbell (Cu-Zn, to northeast); 2) Campbell West (Cu-Zn, north central); the 3) Fold Nose (Cu-Zn, to northeast); 4) Southern (Cu-Zn and Ni-Cu, to south); and 5) Area 39 (Ni-Cu-PGE, to southeast. (Figures are available on MacDonald’s website at Initial drilling will be concentrated on the four VMS horizons identified through the previous drilling and geophysical investigations.

East Portion of McNugget Property on Same Stratigraphy as Noront’s Eagles Nest

Unlike Noront’s discovery, the EM conductors (2) in the vicinity of MN07-39 are greater than 300m in strike length (based on both VTEM and Crone PEM – surface and borehole) compared to the Eagles Nest 100-200m strike length.  Six DDH holes are targeted in this area to explain the EM anomalies during the current drill program.

Company Provides  Detailed Outline of  Voisey’s Bay-type Target on Hulbert-Salo Property

The Company has staked 14 mining claims covering an area of 3,140 hectares with magnetic and EM (VTEM survey) characteristics of an intact ultramafic-gabbroic intrusion.  Modelling of these data results in a spoon-shaped intrusion with multiple internal structures, similar in size and shape of the Voisey’s Bay complex which hosts numerous Ni-Cu deposits.

The VTEM/Mag conducted over the Property has identified an anomaly approximately 10.9 km long by greater than 3.3km wide at its widest.   Historical prospecting over the area identified both gabbroic and ultramafic rocks. An interpreted “feeder zone/dyke” exists to the west of the main intrusive.  The most prospective EM conductor – the primary nickel target – is located just above the throat of the feeder dyke, similar in position to the Ovoid at Voisey’s Bay. A 3D model of the magnetic data is available on our website.

“It is both unusual and highly prospective to find a system that appears to be so intact with EM anomalies identified in groups within the magnetic network/structures (cycles or influxes)”,  comments Quentin Yarie, P.Geo. Vice President of Exploration.   “The Voisey’s Bay mineralization has been explained in terms of a model calling for repeated influxes of magma and these characteristics are obvious in the Hulbert-Salo data.”

Current short term work plans include a Crone PEM ground survey over the most prospective Nickel targets (identified from the VTEM inversion).  Upon review of this data, a drill program will be defined.  Because the Hulbert-Salo property is in a  new area MacDonald will engage in consultation with both Webequie and Kasabonica First Nations and outline the proposed first phase of drilling.  This is in keeping with MacDonald Mines established protocols regarding exploration on historical lands used by First Nation communities.

The ground geophysical program has been used by MacDonald Mines on its McNugget Property resulting in significant success in identifying targets of interest for drilling.  Based on previous experience, the Company is confident that this process can be completed quickly and with minimal impact on the ground as it requires no line cutting (GPS positioning would be utilized).

MacDonald Mines in presenting this target of opportunity cautions that drilling will be required to confirm the sources of the EM conductors.

The new Matagami-type VMS Camp

Posted by on Monday, 31 May, 2010
MacDonald Mines Exploration  has announced today that the 2010 exploration drilling program on its McNugget Property has discovered new volcanogenic massive sulphide (VMS) mineralization of substance. Preliminary assays are reported below with follow-up full assays pending and will be reported when received. An analysis of technical data completed in February 2010 found magnetic and electromagnetic (“EM”) targets that were not previously explained. During the May portion of the 2010 drilling campaign, a Crone Geophysicsdown-hole EM system was used for drill target control – it has been established that McNugget VMS horizons show strongest conductivity where copper (Cu) content is highest.
A new VMS camp with characteristics similar to those seen at Matagami or Noranda in Quebec is now conceivable (i.e., larger VMS deposits with satellite deposits along strike).”
Massive sulphides were intersected in all May 2010 drill locations with widths varying from 2m to greater then 30m. One of the drill sites (two holes) on the McNugget Property intersected massive magnetite as well as associated ultra mafic materials. This location is characterized by a long magnetic high (magnetite) with an associated electromagnetic conductor (VTEM). These characteristics are very similar to those of the Freewest/Cliffs chromite discovery. The core from these two intersections is currently being tested for chromite. Additonal geophysics will be planned along this long trend (1.5 kilometres) to aid in interpreting the potential of this zone to host chromite.
Big Mac Property
MacDonald’s February 2010 re-interpretation created an initial program of 5 high-priority high-resolution ground gravity survey transects for both chromium (Cr) and nickel-copper (Ni-Cu) mineralization. Transect models were based directly on known mineralization signatures discovered within the “Ring of Fire”. The Company’s claim block contains both discrete and strike-extensive coincident airborne magnetic-VTEM and gravity anomalies within stratigraphically favorable geological packages with geophysical signatures similar to the significant Cr discoveries of Freewest and KWG-Spider near McFaulds Lake. Three gravity drill targets all exhibited anomalous densities coincident with local magnetic trends and have been interpreted to be steeply plunging dense bodies. Drilling was completed on one these targets in April 2010. Assays are pending. One of the gravity transects identified a density anomaly coincident with a discrete conductivity (VTEM) anomaly and offset magnetic feature that will be drill investigated for nickel.
Hulbert-Salo Property Exhibits Voisey’s Bay-type Targets
MacDonald is designing an exploration program for its highly prospective Hulbert-Salo Property which appears to host an intact intrusive complex with potential for Voisey’s Bay-type targets, as interpreted by Dr. Larry Hulbert. The Company’s airborne geophysical survey (VTEM) outlined very conductive, discrete targets within a layered magnetic structure. The high conductivities observed are typical of magmatic massive sulphides containing nickel. To optimize the Company’s chances of success, a surface time domain geophysical survey is being designed that will focus on the potential nickel targets. A Crone Geophysics‘ system will be used in the event that other more conductive (superconductors) and/or deeper targets were not detected by the airborne survey.
Exploration to Recommence June 2010
The next phase of exploration will commence in late June 2010. MacDonald believes that there is potential for its James Bay properties to host both Nickel and Chrome on the McNugget, Big Mac and Hulbert/Salo Properties.
As the assays become available, 3D target modeling will be based on assays, geology, magnetic susceptibility, conductance and so forth. Further drilling will provide greater detail on three selected VMS targets as well as the strongest potential Ni-Cu targets. It is anticipated that deeper drilling will be required to test the high conductance targets mapped by the geophysical programs used during May.

Goldbrook’s Raglan Winter Geophysics Program Underway

Posted by on Monday, 17 May, 2010

Goldbrook Ventures Inc.,   announces the commencement of a winter geophysics program at its McCart Lake camp in the western portion of the Raglan belt, Ungava, Quebec in order to carry out a planned winter geophysical program.  Contractors, equipment and support personnel arrived at the McCart Lake camp site in early April, using ski-equipped aircraft, to carry out a program starting April 18th, of ground magnetic and EM surveying in preparation for an aggressive exploration and drilling program during the summer season.

About 1600 line-kilometres of continuous recording high resolution magnetometer surveys over various areas of interest are being completed by Clearview Geophysics Inc. These high resolution magnetometer surveys are conducted in “walking mode” in conjunction with GPS guided snowmobile towed mode. The magnetometer data provide the mapping information for the detection and delineation of ultramafic bodies which host Raglan-style mineralization.

Two crews, from Crone Geophysics and Exploration Ltd, are conducting up to 70 line-kilometres of moving loop electromagnetic surveys using a combination of SQUID and fluxgate sensors. These sensors are state-of-the-art instruments specifically designed to detect and discriminate the highly conductive nickel sulphides of the Raglan deposits.  The moving loop model of surveying is labour intensive, but provides the highest resolution.

The 2010 exploration program, with a budget of over $17,500,000, includes a goal of 25,000 metres of diamond drilling in conjunction with an extensive program of prospecting, geochemical surveys, geological mapping and ground geophysics over both the east and west extensions of the productive north and south Raglan horizons. This is an aggressive expansion from the previous, and successful, exploration focus on the Belanger Trend into new, and high potential geological target areas. This program will follow-up on the positive results of geological, geophysical and remote sensing surveys completed in these areas over the last two years and which helped with discoveries of extensive nickel sulphides at the Mystery and Timtu zones.  The work is expected to be successful in defining new sulphide nickel occurrences within the Company’s extensive Raglan Nickel Belt property holdings.

The large Goldbrook property is located in Nunavik, northern Quebec, Canada.

The 2008 exploration program consisted of 12,000 metres of BQ size core drilling, a remote sensing program that covered large parts of the Goldbrook property, a regional geology and sampling program, interpretation of VTEM geophysical data collected in 2007, and reclamation of two camp sites previously used for exploration in parts of the Goldbrook property.

There are numerous other areas of interest / showings that warrant analysis and search for specific drill targets. Some of these areas are also candidates for further geophysical surveys or tests with methods such as gravity, walking magnetics, ZTEM, and SQUID-sensor ground EM, and possibly for more detailed VTEM analysis. In addition, analysis of regional geochemical data (rock, soil and till) may provide insights or support other evidence for drilling.

EM geophysics on VMS Vetures Inc. projects in Manitoba

Posted by on Monday, 22 February, 2010


The RN-10-05 hole, targeting an airborne geophysical survey (VTEM) anomaly, has been started, with an anticipated hole length of 500 m. These holes are testing targets in the Magoo Lake area, located approximately 1.5 km northwest of the Discovery Zone. Five additional holes ranging in depth between 325 m and 700 m are planned and will target VTEM, DeepEM surface survey and Borehole Pulse EM geophysical survey anomalies. Total drilling anticipated in this program is estimated to be 3,000 m.

Hole RN-10-10 will target a large conductive modeled plate near the recently completed drilling on the Tower Zone, and is planned to be 700 m in length. Company geologists have recognized the potential extension of the Discovery Zone rhyolite in this area. This target will be drilled later in the program, as it can be drilled from ground that is accessible all year round.

Deep penetrating ground geophysical surveys have identified new conductive targets northeast and along strike of the Tower Zone over a strike length of approximately 1 km. These are untested anomalies and deeper than any previously drilled in the northeast Tower area. Three holes, each testing a new anomaly, will be drilled. Anomalies have been modeled below 300 m from surface. Hole RN-10-09 will test the deepest target in the area and has a planned length of 700 m.

drill holes RN-10-07 and RN-10-08 will test geophysical conductors located in the vicinity of an historical drill hole which reported multiple intervals of disseminated, stringer and near solid to solid sulphide, with anomalous copper, zinc and silver values in altered volcanic rock. Reprocessed historical geophysical survey data, including bore hole survey data, has been merged with VMS VTEM airborne survey data and more recent ground deep EM survey results.

These three drill targets, located on mining claim P6805E, are spatially associated with the Company’s recent surface pulse electromagnetic survey that outlined several highly conductive plates directly associated with, or flanking, a magnetic response.

A VTEM anomaly with a coincident magnetic high defined on mining claim P5643E will also be drilled. It is located approximately 2 km east-northeast of the Phase 1 Tower Zone drilling area.  This target has a lateral extent of over 700 m and based on modeling of electromagnetic data is suggestive of stacked conductive zones. Historical drilling results in the area have reported strongly altered volcanic rock and sulphide mineralization with anomalous copper and zinc. The geological setting of these conductors is interpreted to be very favorable for hosting base metal massive sulphide-type deposits of the Flin Flon-Snow Lake belt.

Drilling on mining claim P1019F will target two separate VTEM anomalies near Magoo Lake.  Historical work completed by Noranda Exploration in this region outlined highly anomalous copper and zinc values in a highly chlorite-altered volcanic host rock. This geological setting is also favorable for the formation of base metal massive sulphide mineralization and two holes are planned to test the targets.

Crone with new universal borehole probe

Posted by on Friday, 29 January, 2010

Snow Lake projects under support of geophysics

Posted by on Thursday, 28 January, 2010

One of the known volcanogenic massive sulphide (VMS) districts is  Snow Lake which is located in central Manitoba. The VMS mineralization is associated with juvenile rocks of the Flin Flon greenstone belt. The belt is one of the most prolific VMS belts and the largest Paleoproterozoic VMS district in the world. There are several recent examples of geophysical supporting of the exploration programs on the region.

At the end of last year Rockcliff Resources Inc. announced that Geotech Ltd. of Aurora, Ontario has commenced a 3,000 line kilometre airborne survey on the Company’s Snow Lake VMS Project. The ZTEM survey focused on Rockcliff’s Squall and Tramping Properties. Both properties are located approximately 6 km north and south of HudBay’s recently discovered (2007), buried Lalor Deposit where recent deep drilling intersected a new gold/copper zone grading 34.5 m of 5.33% copper and 13.35 g/t gold. The survey also covered Rockcliff’s five near surface copper-rich deposits and additional areas with VMS potential. The survey has the capability of locating conductive bodies down to depths of over a kilometer.

The purpose of the survey was to integrate Rockcliff’s existing VTEM database (13,000 line km) on the project with Geotech’s state of the art ZTEM geophysical technology. The combined surveys allows for complete geophysical coverage and locate conductors buried from near surface to depths in excess of a kilometre. All conductors identified in the survey prioritized based on their conductivity, resistivity and proximity to juvenile arc rocks.

The survey utilized Geotech’s ZTEM or Z-Axis Tipper Electromagnetic system, an innovative airborne EM system which uses the natural or passive audio frequency fields of the Earth as the source of transmitted energy.

Now Rockcliff Resources Inc. announces the drilling program. A minimum of 5,000 metres (m) of drilling are planned in approximately 30 holes. Drilling is planned on the Rail, Reed, Freebeth, Tramping and Squall properties. The targets include extensions of a known copper-gold rich horizon (Rail), additional testing of DPEM & BHPEM anomalies (Reed), an untested borehole anomaly (Freebeth) and untested, buried ZTEM targets (Tramping and Squall). Drilling at the Reed property will focus on a series of deep, off-hole anomalies indicative of multiple, stacked, highly conductive lenses with conductivities typical of massive sulphide mineralization. Four off-hole anomalies at vertical depths of 500 m, 750 m, 880 m and 930 m will be tested.

VMS Ventures Inc. has completed  its diamond drill testing of phase one targets, at the Tower Zone, on  its 100% held Reed 5188 and Reed 5196 claims.  The program consisted of three holes and the extension of a previous hole for a total of 1809 metres.   Diamond drill hole (TZ-08-01) was extended to assess a Borehole Pulse Electromagnetic (BHPEM) anomaly. All drill holes intersected sulphide mineralization explaining the Surface Pulse Electromagnetic (DPEM) and coincident Versatile Time-Domain Electromagnetic (VTEM) anomalies. The Super Zone has been defined on the basis of “AdTau” (see image 2), which is a calculated measurement derived from the analysis and interpretation of VTEM data. AdTau is a direct indication of rock conductivity. The metal-rich mineralization that comprises VMS-type deposits typically produces strong conductivity responses. The 550 hectare Reed Lake Super Zone is interpreted to be highly prospective for this style of deposit. The Company is building its Super Zone exploration plans based on the hypothesis that it may host a VMS camp of several deposits.

Deep-EM and Magnetic Survey Results Map

Troymet Exploration Corp.  announces the commencement of its winter program on the McClarty Lake project located near Snow Lake, Manitoba. The property lies ~45 km south of HudBay Minerals’ Chisel Lake and Lalor Lake volcanic massive sulphide (VMS) deposits.

The establishment of a 10.6 km grid on Troymet’s 100% owned MAC 3 claim is expected to be completed this week, followed by a fixed large loop surface pulse electromagnetic (PEM) survey under contract to Crone Geophysics of Mississauga, Ontario. The grid is centred over the Mac EM conductor that was identified by the Company’s 2008 deep penetrating VTEM helicopter-borne survey and is on trend with the Discovery zone.

The Mac conductor is a high priority target that offers the potential for immediate and significant new VMS discoveries on 100% owned Troymet ground. A 2010 winter diamond drilling program (~1,500 metres) is planned to follow up on results of the PEM survey.