Posts Tagged graphite

EM surveys over Green Giant graphite property in Madagascar

Posted by on Tuesday, 24 February, 2015

by Alexander Prikhodko, 24 Feb., 2015

Graphite mineralization has a high electrical conductivity, which makes it an excellent target for electromagnetic (EM) methods.

Energizer Resources Inc. and it’s predecessors have conducted several airborne and ground electromagnetic  surveys over different areas of Green Giant graphite property in Madagascar (province of Toliara). Different EM technologies have been used in accordance with their progress.

Geological position and characteristics of the property:

Regional position – Ampanihy Shear Zone, NS foliation of rocks;

-Vertical to sub-vertical nature;

-The area is underlain by supracrustal and plutonic rocks deformed with N-NE trending structures;

-Graphitic zones consist of multi-folded graphitic strata;

-Graphitic schist and gneiss with vanadium mineralization.

 Geologic map (magnetic field interpretation)


















AEM surveys covering with different technologies is in the picture above.

The basic AEM surveys results which demonstrate a potential of the territory and effectiveness of the applied methods are below.


DIGHEM survey

Inverted (EMflow, Encom) DIGHEM data. Conductivity 3D voxel, sections and a map.

(conductors in red, resistors blue colors)
























VTEM survey

Time-domain EM TAU parameter calculated with sliding window algorithm picks up the most conductive part of the geoelectrical section on each station-sounding.















The resistivity-depth imaging (RDI) of EM time-domain data is a base of depth positioning of conductors potential for graphite mineralization and the first approximation of their geometry and dimensions.










3D apparent resistivity distribution with <1 Ohm-m clipping areas:



Six Graphite-Rich Zones at Buckingham Graphite Property, Quebec after airborne and ground geophysics

Posted by on Monday, 9 June, 2014

CAVAN VENTURES INC.  announces it has exposed graphite-rich zones as a result of trenching on its 100%-owned Buckingham graphite property, located adjacent to the historic Walker Graphite Mine in Buckingham Township, Quebec. Graphite-rich zones were exposed in six trenches, and channel samples were collected from two trenches over a combined distance of 59.5 meters. Graphite-rich outcrops at the same location as one of the trenches assayed at 21.7% C.

Peter Swistak, President of Cavan states, “We are extremely pleased that many of our airborne EM anomalies identified last year are now confirmed as graphite mineralization. Our ground geophysics was able to confirm the anomalies in real-time, which allowed us to quickly expose the mineralization and collect samples for assay. We anticipate highly positive results and intend to return for further exploration in the coming weeks.”

In May the Company engaged Magnor Exploration Inc. (La Baie, QC) to conduct a short exploration work program. Ground-based geophysics was used to ground-truth airborne EM anomalies identified last year using the PhiSpy portable TDEM system. PhiSpy generates real-time EM profiles of the area being surveyed, and can detect buried conductors to approximately 10m depth. Dube & Desaulniers Geoscience (Ottawa, ON) was engaged to collect 3.3 line-km of survey data over priority airborne EM anomalies using the PhiSpy system. The real-time interpretation of TDEM data allowed the Company to execute trenching on several high priority targets.

A total of six trenches ranging from four to 48 meters in length and two meters in width were completed. Trench 22C was cut for 24 meters in a northwest direction, with a second perpendicular trench cut at its southeast end for 20.5 meters. Graphite-rich zones were exposed in both directions, and channel samples were collected over most of both trench lengths for a total of 33.9 meters. Mineralization at Trench 22C is still open to the north, with some visible flakes in the trench up to one centimeter in diameter. A rock grab sample assayed previously from this location returned 21.7% C (see news release, July 8, 2013). Trench #1 was cut in a west-northwest direction, with visible graphite channel-sampled over 25.6 meters. Because of the rich nature of the mineralization, these samples and those from Trench 22C were immediately shipped for assay.

A new graphite zone was also discovered roughly 150 meters east of Trench 22C, where graphite-rich veinlets in granitic-pegmatitic rocks contain graphite flakes over 5 mm in diameter. Additionally, an airborne anomaly approximately 400 meters north of the main set of conductors was confirmed by PhiSpy, but the program ended before this new target could be tested through trenching.

New Strongly Conductive Target on Feagan Lake Graphite Project

Posted by on Wednesday, 26 March, 2014

Metals Creek Resources Corp.  reports that the company has discovered several conductive electromagnetic targets on its recently staked, 100% owned Feagan Lake Graphite property which is located approximately 7 km due west of  Zenyatta’s hydrothermal graphite discovery.

These new electromagnetic (EM) conductive responses were flown with the VTEM plus time domain system targeting previously identified magnetic lows that resulted in the discovery of several new exploration targets exhibiting similar features to that of Zenyatta’s hydrothermal graphite discovery. One of the EM responses in particular returned a strong conductive response on all channels with an associated magnetic low.

The Feagan Lake claim block consists of 12 claim blocks totaling 175 claim units and is located immediately west and adjacent to Zenyatta’s claim block.  The Feagan Lake property to the best of management’s knowledge has never been flown for EM conductors making this a brand new discovery demonstrating the potential for the area to potentially host additional graphite mineralization.

Metals Creek’s President and CEO, Alexander Stares states, “With the discovery of several new EM anomalies within favorable stratigraphy to host possible additional graphite mineralization, it provides Metals Creek with an exciting new project strategically located adjacent to Zenyatta’s hydrothermal graphite discovery.  This new highly conductive EM target will be the focus of additional exploration work going forward.”


Planned airborne geophysical survey looking for an economic graphite deposit at Blackflake property

Posted by on Monday, 10 February, 2014

Xmet Inc. announces that it has engaged Aeroquest International to complete a new round of Versatile Time Domain Electromagnetic (“VTEM”) and Magnetic Gradiometer Survey on its newly acquired 20,000 acres of 100% owned claims which expanded Blackflake’s total area to 29,400 acres. The airborne survey will begin in the next few days.

“This will be our third round of EM aerial surveys and with the exploration success Xmet achieved with its first two EM surveys, we are excited about the potential for this next round of VTEM,” said Xmet’s Chairman and CEO Alexander Stewart.

He continued by saying, “Our primary objective remains to drill test our prime anomaly, disclosed in our news release of December 12, 2013, for which permits for ground geophysics and drilling are expected to be received this month. However this newly acquired land and the further upside potential that the VTEM can deliver is equally exciting.”

Embedded in this news release is a MAP depicting Blackflake’s Eastern Claim Block. As per the map’s legend, the yellow portion within Xmet’s claim block denotes Xmet’s land package prior to January 30th, 2014 News Release and the horizontal grid lines within Xmet’s claim block denotes the 20,000 acres of new claims staked along with the area that will be flown in this round of VTEM.

To view the map accompanying this press release please click on the following link:

Bill Yeomans, P. Geo, states, “Given the highly conductive nature of graphite deposits, VTEM is a very effective method for locating potential graphite and massive sulphide type deposits. The new VTEM survey, which will cover approximately 473 line kilometres, is excellent for locating conductive anomalies as well as for identifying lateral and vertical variations in resistivity.”

About Blackflace…

Drilling and Discovery Update at the Miller Graphite Project with airborne and ground geophysics

Posted by on Friday, 7 February, 2014

Canada Carbon Inc.  provides an update on the advancement of its winter exploration program on the Miller Mine property. Shortly after drilling began in December, it was halted due to the discovery of VN3, a graphite vein that is two metres thick on surface and continuous along strike for five metres. Drilling was re-directed to the VN3 discovery, and real-time electromagnetics (“EM”) were employed to identify new drill targets in the area.

R. Bruce Duncan, CEO & Director of Canada Carbon Inc. stated, “We continue to be pleasantly surprised by the prolific nature of graphite mineralization at Miller. The VN3 discovery is a wide graphite vein at surface over a large airborne EM anomaly, making it a high priority for re-evaluating graphite potential in this area. We continue to investigate this area using real-time ground geophysics to rapidly identify targets for drilling in the second phase of our winter program.”

Previously, the Company announced a minimum 1000-metre drill program of NQ-sized diamond drill holes to test several VTEM anomalies (see news releases, December 3, November 14, 2013). Drill hole DDH13-09 confirmed that the E2 anomaly is associated with a sulfide-rich intersection with minor disseminated graphite. Drill hole DDH13-10 targeted the E3 anomaly and encountered a wide intersection of minor and disseminated graphite in marble. During movement of the drill to the E3 drill site, a graphite-rich vein (VN3) was exposed over two metres in width and along strike for five metres before pinching out.

The VN3 discovery was subjected to drilling with six shallow drill holes targeting the vein at depth and along its projected extension on strike and at depth. The winter campaign encountered bad weather, which slowed down the overall drilling production. A total of 547 metres in nine holes was completed in this phase of the program. Maps showing the DDH location can be found at:

DDH Location Link:

The most significant results are from the new vein discovery VN3 where drilling in core hole DDH13-15 encountered 48.60% C graphite (Cg) over 1.8 metres, including 63.20% Cg over 0.5 metres. This intersection of graphite occurs 4.6 metres (vertically) beneath the VN3 showing. DDH13-14 intersected a graphite vein grading 50.50% over 0.30 metres in 3.50 interval metre interval grading 6.80% Cg between the surface and the DDH13-15 graphite mineralization. The VN3 showing remains open at depth.

The other hole of interest is hole DDH13-11, which targeted a wollastonite-graphite pod located 22.5 metres southeast of the VN2 showing in the trench area. The hole was successful in extending the mineralization hosting the pod to a depth of 8.19 metres (vertically) beneath the surface showing. Grades similar to other graphite pods (see news release dated November 25, 2013), specifically 8.10% Cg over 2.3 metres including 11.00% Cg over 0.90 metres. The pod southeast of the VN2 showing is suspected to be within the same mineralized corridor that extends to at least 39.3 metres (vertically) beneath the VN2 showing. The mineralized corridor also remains open at depth.

The new vein (VN3) discovery triggered the Company to halt the drill campaign and perform a ground electromagnetic survey over the large VTEM anomaly surrounding target E3 to find the best targets before drilling resumes. Dubé & Desaulniers Geoscience Ltd. (Ottawa) was engaged to perform a ground electromagnetic survey using the PhiSpy system. This portable time-domain EM system enables the detection of conductive rocks at optimum depths of 10 to 20 metres, with the results seen in real time on a display screen. This allows for the strongest anomalies to be immediately identified for further testing.

The PhiSpy survey was performed over a 0.11 square kilometre area centered on VN3 with line spacing between 10-20 metres for a total of 12.7 line kilometres. The survey identified 14 anomalies ranging between 5 and 54 metres in maximum dimension. The widest anomaly was discovered in the vicinity of the E3 target identified previously by Geotech, and the Company is currently working with Geotech to re-interpret their results to include the PhiSpy data. Additional data from the core and surface showings will also be incorporated to identify drill targets in this area.

Winter field work including trenching, beep-mat and TDEM surveys, and prospecting is currently underway on the new PhiSpy anomalies in the VN3 area. Drilling will resume once reinterpretation of all results are complete. Existing targets include the new VN3 showing, the trench area where the VN2 surface mineralization is established to a depth of 39.3 metres, and the E1 anomaly, located 800 metres north of the Miller mine pit. Geophysical maps indicate that E1 lies between two magnetic anomalies that may correspond to a lithologic contact of two geological units having a similar geological context to that of the known Miller mineralization (see news release, November 14, 2013).

Several EM Conductors Confirmed at Mulloy Graphite Project, Ontario

Posted by on Tuesday, 17 December, 2013

CARIBOU KING RESOURCES LTD. reports that several significant electromagnetic (EM) conductors have been confirmed on its Mulloy graphite project, located roughly ten kilometers west of the Zenyatta Ventures Ltd. Albany graphite project in Ontario. Four electromagnetic (EM) conductors are confirmed, three of which have a strike length over 700 meters, with the fourth striking over 600 meters in length, and all conductors remain open along strike. Each of the conductors corresponds in part with magnetic lows that are believed to indicate graphite mineralization, and one conductor is supported in part by historical drilling that encountered several intervals of graphite mineralization as described in detail below.

Michael England, CEO & Director states, “Our Mulloy property continues to demonstrate a great potential for significant graphite mineralization. Just as we expected from our earlier reconnaissance geophysics, the EM conductors are much larger than initially indicated, with a good correlation between conductivity and non-magnetic character expected for graphite mineralization. Our drill permits are expected shortly, we have a drill ready, and most importantly, we have road access directly to our drill targets.”

A total of seventeen line-kilometers of geophysics were completed at a line spacing of 100 meters, and both horizontal loop electromagnetic (HLEM) and magnetic data were collected. The survey focused on an area where reconnaissance HLEM and magnetics identified several anomalies that defined a possible northeast-southwest conductive trend (see news release, September 25, 2013). The new results confirm the previous data, extending four of the individual anomalies into southwest-striking linear conductors up to 800 meters in length that remain open along strike. The southernmost conductor ‘A’ is roughly 700 meters long, with an apparent broadening and narrowing that suggests a width of up to 100 meters along portions of the conductive zone. Conductors ‘B’ and ‘C’ are 630 and 885 meters long respectively, and both exhibit breaks along strike that may indicate offset by cross-structures. Anomaly ‘D’ is 875 meters long and exhibits broadening and narrowing up to 100 meters in width, as well as some offset along strike. Conductors C and D have significant strike lengths correlated with strong magnetic lows that are very likely due to graphite mineralization. Conductor B is near a historic drill hole that encountered 90% visual graphite in 18.68 meters of graphitic schist, followed by a second graphitic schist intersected over 19.78 meters for a total of 38.46 meters (Ontario Ministry of Northern Development and Mines, Report 42F15NE8019). An estimate of true thickness cannot be determined from the historic drilling, and the graphite content is a visual historical estimate and should not be relied upon without lab assay confirmation.

There are still several conductive anomalies identified in the original reconnaissance data to the southwest of the present survey that remain to be further delineated, and will be the focus of future ground-based surveys. The EM conductors from the present survey can be seen in plan view with magnetics on the company website at

Multiple EM Conductors Identified at Mulloy Graphite

Posted by on Thursday, 31 October, 2013

CARIBOU KING RESOURCES LTD. announces that ground-based electromagnetics (EM) has identified four significant conductors on its 100%-owned Mulloy graphite project, located ten kilometers west of the Zenyatta Ventures Ltd. Albany graphite project in Ontario. Measurements taken over 325 meters along a claim line identified four horizontal loop EM (HLEM) conductors that are near historic drilling that encountered 90% visual graphite in 18.68 meters of graphitic schist, followed by a second graphitic schist intersected over 19.78 meters for a total of 38.46 meters (see news release, August 15, 2013). Based on these positive results, permitting for line-cutting and drilling has been submitted and geophysics is presently underway to delineate the strike extent of the conductors, which will then be drill-tested.

Mulloy Graphite Maps:

Michael England, CEO and Director states, “The Mulloy graphite property hosts a historic drill hole with substantial graphite intersections that correspond with our recently-identified HLEM conductors. Our detailed work program is now underway and will include a drill program to test these high priority EM targets. This is a very active and exciting time for Caribou King as we explore all of our highly prospective graphite properties, several of which are in close proximity to historic or operating mines.”

The Mulloy Graphite Project (formerly the Pito claims, see news release, August 15, 2013) covers 1,536 hectares and is located 10 kilometers west of the Zenyatta Ventures Ltd. Albany graphite project that recently reported five drill holes including: 146m of 5.2% Cg, 177m of 5.3% Cg, 186m of 4.9% Cg, and 125m of 4.6% Cg, respectively (Zenyatta Ventures news, July 2, 2013). At Mulloy, a single north-directed hole drilled in the late 1970’s by Shell Canada Resources Ltd. intersected graphitic schist from 107.9-126.58 meters, with graphite forming 90% of the schist over the 18.68 meter interval. An additional 19.78 meters of graphitic schist from 130.28-150.0 meters contained several zones of soft graphite (Ontario Ministry of Northern Development and Mines, Report 42F15NE8019). An estimate of true thickness cannot be determined from the historic drilling, and the graphite content is a visual historical estimate and should not be relied upon without lab assay confirmation. The total depth of the drillhole was 182.70 meters.

The HLEM survey at Mulloy followed a north-south claim line located ten meters east of the historic drillhole collar, with stations spaced at 25 meters along a north-directed transect. Four HLEM conductors with coincident magnetic highs were detected over the 325 meter length and are believed to indicate additional graphitic zones in the metamorphic stratigraphy. Geophysical compilations available from government sources were also reviewed and show that the historic drillhole at Mulloy is positioned between a magnetic high and low, with a similar situation observed for the graphite breccia pipe presently being explored by Zenyatta Ventures at Albany (data from Maps of the Mulloy graphite project that includes historical magnetic data can be viewed on the company website at

VTEM Survey Identifies Five Main Conductive Anomalies on Miller Lump/Vein Graphite Property

Posted by on Tuesday, 8 October, 2013

Canada Carbon Inc. announces that it has received the final results of the Geotech VTEM airborne survey performed over the Miller graphite property. Processing of the VTEM data allows for the derivation of multiple products used collectively in identifying priority targets for follow-up work. Five high priority targets were identified, two of which are known to correspond with marble rocks that host the graphite elsewhere on the property.  Additionally, the calculated time constant processing (or ‘Tau’ constant) has identified 86 clusters of smaller-sized EM anomalies on the property which show a strong relationship in signal between each other. Assessment of these anomalies will continue, with testing of the targets through trenching and/or drilling under consideration.

R. Bruce Duncan, CEO & Director of Canada Carbon Inc. stated, “Canada Carbon is very pleased with the results of the Geotech survey, which highlights an impressive number of high-priority exploration targets that are widely distributed over the Miller property. Our excellent road access to the property will allow our team to quickly prioritize these anomalies and focus on those with the greatest potential. These geophysical results are an important technical asset that will continue to lead to new graphite discoveries in the very near future at the Miller graphite property.”

The survey entirely covered two claim blocks (named East and West) that constitute the Miller Property. Principal sensors for the survey included a Time Domain EM system and two magnetometers to measure horizontal gradient. The total surveyed area is 25 kilometres (km)2 and the total line coverage is 336 line-km. Signals due to known cultural sources such as power lines and houses were removed from the EM data. On the East block, survey lines were flown in a northeast to southwest direction, with a line spacing of 100 meters (m). A spacing of 50m was implemented in the central part of the block where historic mining took place, and where graphite veins and pods are currently being tested through trenching and drilling (see news release September 18, 2013). Two major anomalies (E1 and E2) are present on the East block, occurring respectively at 100m depth and 80-100m depths. Anomaly E1 is located 800m north of the mine pit, with an approximate diameter of 400m.  Magnetic maps show that E1 is located between two magnetic anomalies that could correspond to the contact of two geological units with a similar geological context to the known Miller mineralization.  Anomaly E2 is located next to the current trench work area. Anomaly E1 is positioned where Canada Carbon recently obtained an access agreement for exploration work, with E2 partly included along its north extension (see news release September 5, 2013).

The West block was flown in a northwest to southeast direction with line spacing of 100 m.  The West block hosts three major anomalies (W1 to W3).  Anomaly W1 is located in marble and is sub-vertical at 100m depth, and W2 is also located on a contact zone of a marble with intrusive rocks. Both W2 and W3 are close to the surface according to the survey results.

The five main conductive targets were selected for their high amplitude conductivity, along with their significant extent (hundreds of metres) and detailed morphology.  Additional conductive anomalies of lesser amplitude form dense clusters on both claim blocks.  These clusters were selected on the basis of their spatial distribution and by the nature of the EM signal in between them as depicted on time constant image generated by Geotech.

On the East block, 40 EM clusters consisting of one or more EM anomalies are present, with the clusters having a mean diameter of approximately 100 meters.  Among these anomalies, a 500m along-strike anomaly with a depth of at least 100 meters is present in the vicinity of the Miller mine pit and will be subject of further resolution by Geotech.  Southeast of the Miller mine pit, an anomaly is also present that shows along-strike continuity with the mine pit anomaly.  Many small historic trenches are found along these anomalies at surface, and Company geologists believe that it is very likely that graphite is the cause of these new anomalies.

The West block hosts 46 clusters with a mean size of approximately 200m, and is scheduled to be tested through prospecting and beep-mat surveys to prioritize their potential.  Geotech will also continue to assess the data to resolve the centers of the five main conductors.  This will also include detailed resistivity depth imaging and plate Maxwell 3D models.  This information will be used to establish a drill program for the most promising anomalies.

Previous EM methods used on the property resulted in the discovery of many graphite veins (see press release dated June 27th 2013).  The many historic graphite pits and trenches on the property indicate that graphite is distributed widely and the Company expects that many of the clusters will be correlated with graphite mineralization.  Each of the anomaly clusters has the requisite size and EM response to represent potential new individual graphite discoveries. On-ground prospecting and beep mat surveys are planned over the main anomalies as well as over several of the clusters.  The Company intends to complete these activities during the fall, with the results used to focus upon the best exploration targets.

Airborne Geophysics on Auden Graphite Property

Posted by on Thursday, 3 October, 2013

GTA Resources and Mining Inc. announces that it has commenced an airborne EM (Electro-Magnetics) and Magnetics survey on the Auden Project located adjacent to Zenyatta’s Albany graphite project in Northern Ontario. GTA is the largest land holder in this emerging graphite district with a total of 1748 claim units (approximately 28,000 hectares). Several conductive zone targets had previously been identified on its central claims from an earlier airborne survey flown in 2008. The new airborne survey will be composed of an east block and a west block which will complete the EM and magnetic coverage on the entire claim holdings.

The Auden Property is located adjacent to the south of the Albany Property of Zenyatta Ventures Ltd. who recently discovered vein-type graphite (hydrothermal) mineralization while testing electromagnetic (EM) targets. The mineralization has been described as occurring in breccia pipes (diatremes) having dimensions in the order of 200 m by 400 m. ( The deposits are further described as containing the largest and only high purity “hydrothermal” graphite mineralization being developed in the world. GTA has owned the Auden claims since 2010 and is the single largest land holder in the area. Furthermore, GTA’s management and geological consultants believe that the graphite breccia pipes that exist on Zenyatta’s Albany project are similar to kimberlite pipes (diatremes) and are likely to occur in clusters along structural corridors. Future exploration on the GTA claims will focus on identifying similar targets.

GTA owns a 100% interest in the Auden claims. An interpretation of the previously flown central claim block (EM and Magnetic) survey has identified 12 priority targets for follow-up. All of these targets are highly conductive and could be due to the presence of graphite (graphite has highly conducive properties). None of these conductive targets have been previously drill tested. It is anticipated that the new airborne survey will generate additional new targets for evaluation. GTA have been negotiating an exploration agreement with the “Constance Lake First Nation” prior to carrying out a follow-up program of ground geophysics and drilling, in respect of which GTA has submitted an application for a work permit from the Ministry of Northern Development and Mines.


Posted by on Wednesday, 25 September, 2013
CAVAN VENTURES INC. announces that airborne geophysics has identified a 1,300 meter-long conductor on its 100%-owned Buckingham graphite property in Quebec. The anomaly is oriented roughly north-south, and is divided by an east-wend trending dyke into a 700-meter long southern segment and 600 meter long northern segment. This conductor coincides very well with a conductor identified in a 1982 government survey, and with graphite mineralization previously reported as having up to 11% C in grab samples. A second significant conductor was also identified that extends to about 300 m in length, and corresponds to an area where prospecting by the Company included a grab sample returned 21.70% C from a schistose paragneiss (see news release, July 8, 2013). West of this smaller conductor, five significant conductive anomalies or groups of anomalies were detected of lesser length extents, but with a response that is characteristic of strong conductors such as graphite or sulfide mineralization.
These excellent results support the potential of the Buckingham property to host significant graphite deposits. The Company will shortly undertake a second phase of exploration that will comprise a surface geophysical survey to resolve the airborne anomalies, followed by a phase of stripping and trenching and later the investigation at depth by diamond drilling of what is discovered on surface.
The helicopter-borne survey covered about 50% of the area of the property. Prospectair (Gatineau, QC) carried out the survey, with Magnor Exploration Inc. (La Baie, QC) engaged to manage the project. Both high-resolution magnetic and time-domain electromagnetic (‘TDEM’) data were collected, for a total of 135 line-kilometers. This cost effective geophysical configuration is particularly well-adapted for reconnaissance surveys, with the objective of delineating graphitic conductors to a depth of about 125 meters while maintaining good spatial resolution.

300 Metre Long Electromagnetic Anomaly on Miller Hydrothermal Lump/Vein Graphite Property

Posted by on Monday, 23 September, 2013

Canada Carbon Inc. announces that preliminary VTEM airborne survey results from Geotech Ltd. (Aurora, ON), have identified multiple anomalies over the 20.7 square kilometre Miller hydrothermal lump/vein graphite property. Of greatest significance is a large anomaly that extends from the previously announced (VN1) graphite vein discovery for 285 meters (m) to the southeast and 15 m to the northwest. This large anomaly, located within the eastern claim block, is elongated towards the east and also correlates with a magnetic gradient. This can be explained by the main source of the anomaly dipping east or by the presence of other smaller anomalies on the east flank. The VN1 discovery is located on the eastern flank of the anomaly and this area is now being surveyed by beep-mat combined with trenching. To date, 40 m of the anomaly’s 300 m length has been trenched by working on the vein discoveries. The main anomaly is still being explored; however geophysical modeling should give the location and depth of its source.

R. Bruce Duncan, CEO & Director of Canada Carbon, stated, “The fact that our largest and strongest electromagnetic anomaly leads right to our active trenching at the VN1 vein system is very exciting. It points to significant upside for further expansion of the VN1 vein system, as well as for additional discoveries as we look for the source of the 300 meter anomaly. In addition, other anomalies revealed through the survey show enough size to further justify exploration over each of them. The Company is very pleased with the high-precision and high-quality data collected to date which will allow us to focus on the most promising targets for additional graphite vein discoveries.”

Geotech is expected to produce the final data maps, along with the selection of high priority anomalies which will allow us to choose specific targets to model within the next 4 weeks. The Company’s technical team found three additional anomalies in the immediate vicinity of the VN1 anomaly, for a total of four anomalies, which are completely or partly on land where a surface access agreement has been obtained (see news release, September 5th) and so are the subject of exploration at this moment. Two are located 360 m and 680 m to the southeast of the trenching area and are 240 m and 80 m long, respectively. Many old exploration pits with graphite blocks are in the area of these anomalies. The fourth anomaly is 730 m north east of the trenching area and will be explored by drilling since no outcrop is present on site. That anomaly is 150 m long.

The Company’s west claim block shows seven anomalies but the interpretation of Geotech will be important in confirming those anomalies as being from a bedrock source, since many other anomalies are related to cultural effects. Initial prospecting will be conducted on each target area to determine a priority for future work. The completion of the modeling by Geotech will also help in determining targets to explore while trenching continues.

Regional geology and claim potential

The Miller-Graphite Mine is classified as a skarn deposit. The contact between a pegmatite intrusion anda marble unit has been mineralized by fluids coming out of the intrusive body. The claims are inside the same major geologic unit where marbles and pegmatite are present.

Another past worked zone is east of the deposit and its location is unknown (Maurice, 1984) but would probably be inside the property. A prospecting phase in 1989 also found a mineralized zone 100 meters east of the deposit, on the property, (Blair, 1988) but it is unknown if this is the same zone as noted in Maurice (1984). The same prospecting phase also found ancient pits in the area but they were unexplored by the team. (GM47971) The presence of multiple graphite zone suggests a very interesting context for more graphite discoveries.

An inferred electromagnetic zone was discovered in 1988 and is on the property, south-west of the Miller-Graphite deposit. (Blair, 1987) Another electromagnetic anomaly is also present 70 meters east of the deposit and the anomalous spot was also stuck by lighting while a survey was being done which indicate a conductor body around the area. (Blair, 1988)

Historical geophysical data for new discoveries

Posted by on Friday, 12 July, 2013

Brookemont Capital Inc. announces that upon review of the of Geological Survey of Canada and Ontario Department of Mines aeromagnetic airborne data, a significant geophysical magnetic low anomaly is evident on the recently acquired “Albany East” Hydrothermal Graphite Prospect in Ontario. This new prospect is bordering Zenyatta Ventures Ltd.

The airborne data, from Geophysics paper 3912, Constance Lake, Ontario, Sheet 42 F/16, published in 1967 and compiled by Lockwood Survey Corp., from 1965 to 1967, and completed for the Ontario Department or Mines and the Geological Survey of Canada, Department of Energy, Mines and Resources, outlines a magnetic depression (low) on the Company ground similar to the magnetic depression identified in the same survey over the Zenyatta Ventures Ltd. ground.

The magnetic depression outlined on the BKT claims measures over 1.5 miles (2.6km) by 1 mile (1.6km) using the scale on the aeromagnetics map. Please refer to map on the company website.

Mr. Gregory Thomson, P.Geo., a director of the Company states, “Based on reviewing the limited data currently available, it is quite apparent that there is a magnetic low anomaly that virtually covers the entirety of the newly acquired BKT property. The underlying geologic formation is similar as the host formation in which Zenyatta made its recent discovery. While the formations and geophysical signature are similar in nature, much more work needs to be conducted to test the anomaly’s mineral potential for graphite.”

Conrad Clemiss, President of Brookemont states, “It is very exciting to have a similar type anomaly on our property. We plan to mobilize crews as soon as we can to start the follow up work to fully investigate if this anomaly has similar constitution as the ones on the Zen property which borders our property.”

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.

Airborne EM Survey over the Blu Starr Flake Graphite Property in BC

Posted by on Monday, 22 October, 2012

Anglo Swiss Resources Inc. has announced plans to commence an airborne electromagnetic (EM) survey over its Blu Starr Flake Graphite Property located near Nelson in southeastern BC. The property adjoins Eagle Graphite Corporation’s flake graphite operation which is one of only two natural flake graphite mines in North America. Next to Eagle Graphite, Anglo Swiss holds the largest land package covering 6,473 hectare (~65 sq. km) in the southern part of the favourable Valhalla Metamorphic Complex (see attached maps).

The planned ~550 line-kilometre survey will complete EM geophysical coverage over the entire property expanding on the 2010 survey completed by the Company. The earlier survey outlined a three kilometre long, shallow south-dipping conductor on the north side of Perry Peak which correlates well with numerous outcrops of large flake graphite occurrences known as the Tedesco showing. At this time the total thickness of the graphite bearing units is unknown as this conductor has not been drill tested. The new EM survey will cover the southern half of Perry Peak and central part of the property with the goal of identifying the possible southern extension of Tedesco as well as new large EM conductors. Aeroquest Airborne Limited will be conducting the EM survey utilizing the AeroTEM IV system.

Geology – Property

The varied geology of the property has been extensively mapped. Metamorphic rocks of the Valhalla Complex in the Passmore Dome area belong to the “upper sheet,” lying between the Airy quartz monzonite sheet dated at 62 Ma and the underlying Mulvey granodioritic gneiss sheet dated at 100 Ma. Graphite and minor sulphidebearing carbonate and calc-silicate layers lie at a structurally higher level in the the upper sheet, than that of the cordierite (iolite) and corundum (sapphire) bearing lenses that appear to lie within or near to the Gwillim Creek shear zone.

The Tedesco area geological map units cannot be directly correlated with other areas of the Slocan property. The Tedesco area hosts distinctive graphitic marble layers not known to occur on other areas of the property. During mapping and surveying, five distinct rock unites were observed.

Research –  Geophysical Survey

IP surveys of this property have identified a pronounced anomalous chargeability, possibly attributed to flat-lying marble or calc-silicate horizons containing concentrations of conductive graphite, possibly with other associated sulphide minerals such as pyrrhotite and pyrite.

The total magnetic field survey produced dissimilar but conspicuous magnetic features that might be attributed to either magnetite or pyrrhotite in the host rock.

“Detecting vanadium and graphite deposits with EM methods”

Posted by on Monday, 23 July, 2012


“The recent rush to find graphite and vanadium deposits to satisfy potential demand in green energy applications is reigniting airborne electromagnetic (EM) methods as highly effective exploration tools.”

read more..

Graphite deposit on Madagascar with geophysics

Posted by on Tuesday, 29 May, 2012

Energizer turned its attention to graphite in November 2011, and continues to identify new graphite opportunities on its 120 kilometre-long Green Giant Project.  Through the completion of 29 diamond drill holes over 3,780 metres, 20 trenches over 1,900 metres, regional sampling with 670 prospecting samples, geological mapping of 3 areas, analysis of 3 airborne geophysical surveys, and the completion of 160.5 kilometres of ground-based electromagnetic geophysical surveying, the Company has identified over 320 kilometres of graphitic trends.

Airborne survey over the Henry Graphite Property

Posted by on Thursday, 10 May, 2012

First Graphite Corp. announces that Geotech Ltd. has completed the Versatile Time-Domain Electromagnetic (VTEM) geophysical survey over the Company’s Henry Graphite Project (the “Property”). The VTEM survey over the property covered 1452 line kilometres, at 200-metre line spacing. The purpose of the survey, which was completed on May 6, 2012, was to confirm the historically identified graphite-bearing conductors, and to identify new targets for follow-up work.First Graphite expects to receive preliminary survey results from Geotech Ltd. in the next couple of weeks, at which time it will provide further information. Preliminary and final data will be used by the Company to guide its ground exploration program which will consist of surface sampling, geological mapping and drilling. Interpretation of the final data will be conducted by Living Sky Geophysics Inc., of Saskatoon, Saskatchewan.

Henry Property

The Henry Property consists of six mineral claims covering approximately 22,853 hectares and is located 10 kilometres southwest of the community of Southend, Saskatchewan. Historical exploration suggests that the Property has potential to host a near-surface graphite deposit comprised of scarce, large-flake, high-purity graphite. It is situated within high-grade metamorphic rocks of a sedimentary origin which is an ideal setting for the development of these types of deposits.The technical information in this news release has been reviewed on behalf of the Company by Neil McCallum, P.Geo., of Dahrouge Geological Consulting Ltd., a Qualified Person pursuant to National Instrument 43-101.

About Geotech Ltd.

Geotech has conducted airborne electromagnetic geophysical surveys for more than three decades using proprietary technology and has created a long history of notable innovations. Innovation is the secret to Geotech’s sustainability, making Geotech the longest running company to offer airborne electromagnetic surveying, world-wide. In the last decade Geotech introduced to the world the first helicopter-borne time domain EM system. The VTEM airborne EM system, with its superior S/N ratio, is still the industry standard, able to detect deep conductors that are “lost” in the noise of other TEM systems.


Graphite is a polymer of carbon that comes in three naturally occurring forms – flake, amorphous, and lump. All three are found in metamorphic as well as igneous rocks, varying by grade, particle (mesh) size and moisture content. Graphite exhibits a number of characteristics, which make it a high value industrial mineral with a broad range of applications: it is an excellent conductor of heat and electricity, is resistant to strong acids and thermal shock, is a lubricant, is refractive and has the highest natural strength and stiffness of any known material.The total worldwide graphite market is currently estimated to be US$12 billion. At present, the largest end use markets for graphite are the steel and automotive industries. However in recent years, emerging markets, including green energy development (fuel cells, solar energy and nuclear power) and batteries (lithium-ion and vanadium-redox) are creating the potential for incremental increases in demand. Meanwhile, the closure of a number of natural graphite mines in China, the world’s largest producer, is reducing world-wide supply.