Archive for June, 2012

Completion of Geophysical Survey at King Solomon Dome Property (Yukon)

Posted by on Saturday, 30 June, 2012
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Kestrel Gold Inc.  announces the completion of a geophysical survey at Kestrel’s King Solomon Dome Property south of Dawson City, in the Yukon Territory (“KSD“).

The Survey is intended to map the geophysical properties of resistivity and chargeability of the subsurface down to a depth of 500 metres. SJ Geophysics Ltd. of Delta, British Columbia using their new Volterra-3DIP system in conjunction with a magnetometer survey over a grid approximately 1.6 km by 1.6 km, has been focusing on the area encompassing the Sheba and Mitchell workings which lie within a large gold geochemical soil anomaly. This second phase of deeper geophysical work is envisaged to give a much clearer (3D) picture of the morphology of structures, contrasting lithologies and additional potential drill targets at greater depths. The Survey follows on from the first phase of geophysical work conducted in 2011 which was successful in outlining a large chargeable IP anomaly centred in the area around the Sheba showing and trending towards the Mitchell Shaft to the north over a distance of approximately 1.2 km open along strike and extending to depth.

William Taylor, the Vice President Exploration of Kestrel comments: “We know from work done to date the importance of regional scale NNW trending D4 structures at KSD in relation to Klondike gold mineralization. This survey will help us better understand the other factors that have concentrated the gold and other path finder elements in this particular area where the signatures are so relatively high.”

A number of drill targets have already been outlined at KSD and the results of the Survey are anticipated to be received in advance of the Corporation’s planned 2012 diamond drill program.

King Solomon Dome is a 4050 foot peak in the Yukon Territory of Canada.  It is believed to be the source of the gold fields that sparked the Klondike Gold Rush in the early 1900′s (link to Yukon Gold Mining – Klondike).  Kestrel has an option to earn 100% interest in four individual properties in the King Solomon Dome. The option will require Kestrel to make staged payments totaling $920k over a period of 4 years, issue 150k shares and fund exploration expenses of up to $100k.

Geology

Previous soil sampling within the project area claims had encountered 3 main anomalous zones, each at least 1.0km in length and varying from 25 metres to 400 metres in width, with soil geochemical values of up to 965 ppb Au associated with occasional highly anomalous arsenic, antimony and lead. This metal signature is common to White Gold area mineralized zones such as the Golden Saddle and Arc deposits held by Kinross Gold (formerly Underworld Resources). Recent trenching of these anomalies has encountered mineralization including narrow high-grade zones often containing visible gold with grades ranging up to 14,700 ppb (14.7g/t) Au over 1.9m, 8100 ppb Au over 1.9m and 40,670 ppb Au (40.7 g/t) over 0.7m; as well as broad intervals with grades such as 1622 ppb (1.6 g/t) Au over 8.4m and 2242 ppb (2.2 g/t) Au over 18.2m.


TEM plate modeling for KAN property in the Labrador

Posted by on Thursday, 28 June, 2012

Rio Silver Inc. has published The Results of EMIT Maxwell Plate Modeling and detail Resistivity Depth Imaging of VTEM anomalies for the KAN Gold Extension Project. The VTEM anomalies have been modeled by Geotech Ltd.

http://www.riosilverinc.com/pdfs/11198-KAN%20Expansion-MaxwellModels.pdf

The Results of EMIT Maxwell Plate Modeling of VTEM anomalies for theKAN Gold Extension Project

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The Kan project is located in the Labrador Trough of Northern Quebec, approximately 85km South West of Kuujjuag, Nunavik Territory.

Early exploration on the property was initiated by Cominco Ltd. (Cominco) in 1965 with the discovery of a massive
sulphide showing located under a sphalerite-galena-pyrite, glacial boulder train. Limited drilling by Cominco at the
time failed to define the extensions of this sedimentary exhalative (Sedex) base metal showing. Work resumed in
1993-1996 by Kennecott Canada Inc. (Kennecott) and then in 1999-2000, Noranda Exploration Ltd. (Noranda).
Kennecott discovered two more massive sulphide boulder trains located within 1.5km of the original discovery. The
average grade of 28 of these boulders is 7.7% lead, 9.7% zinc, 276g/t silver and 0.65g/t gold. Dimensions of some of
these boulders reach more than 2 meters across and their angular shapes point to local sources.

While Sedex base metals were the focus of exploration work on the Kan Property, several gold showings were
recorded in the historic assessment reports. The first gold occurrences were located during a Labrador Trough
precious metals reconnaissance campaign done by Noranda in 1987-88. Six grab samples reporting grades from
1.10g/t gold to 9.20 g/t gold were collected from an iron formation ridge located 1.5km east of the Kan showing.
There was no follow-up done on these gold results and this area will be a priority target for Rio Silver.

In 1993, during base metal reconnaissance work, Kennecott discovered a quartz vein cross-cutting iron formations
located 7km NW of the Kan showing. This vein (the Ferricrete showing) reported surface channel assays of up to
280.8g/t gold over 0.30m and 143.4 g/t gold over 0.40m. Four holes were drilled under the showing to test both the
vein and the host iron formations. Results from the drilling are reported below:

K94-11: 4.14g/t Au over 3.8m
K94-12: 6.29g/t Au over 3m and 1.24g/t Au over 2m
K94-21: 5.07g/t Au over 6m and 3.64g/t Au over 4m
K94-22: 4.01g/t Au over 1m and 1.64g/t over 1m.


Airborne EM for Porphyry Copper-Gold in Papua New Guinea

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

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

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

Maniitsoq Ni-Cu-PGE Project, Southwest Greenland

Posted by on Tuesday, 26 June, 2012

North American Nickel Inc.  announces that field operations have now begun at its 100% owned Maniitsoq project in southwest Greenland.

A helicopter-borne, Versatile Time-Domain EM (VTEM) survey commenced last week and is being conducted by Geotech Ltd. of Aurora, Ontario. The survey is focused on the highly prospective Greenland Norite Belt (GNB) where historical drilling intersected high grade nickel sulphide mineralization (e.g. 9.85 m of sulphide mineralization averaging 2.67% Ni and 0.60% Cu in drill hole Im-9).

North American Nickel CEO, Rick Mark, states, “I am very pleased to see exploration begin at Maniitsoq. We have experienced some delays this month due to logistic and technical issues, but, the helicopter is now on the job. Our flying program last year showed that modern technology works in the GNB. We are all looking forward to more targets being defined and starting our initial drill campaign later this summer.”

The survey will total over 3,000 line-kilometres and, together with last year’s SkyTEM survey, will provide near complete helicopter TEM coverage of the entire GNB within the company’s land holdings. Surveying will also be done over selected targets outside the main GNB.

Electromagnetic anomalies detected by the 2012 VTEM survey together with those identified by last fall’s SkyTEM survey will be field checked and the highest priority ones will be drilled later this summer. Drilling is now expected to begin in mid-August.

More details on Maniitsoq, and other North American Nickel projects, may be found on the company’s website www.northamericannickel.com.

Qualified Person


The Maxwell and CSIRO Workshop schedule and booking form for 2012 is now available

Posted by on Thursday, 21 June, 2012

______________________________________________________________

The 2012 Maxwell software training schedule and booking form is now available. Please see the PDF below.

Many hardware and software queries can be answered by EMIT staff over the phone. However, for more intensive personalised training, we can organise one-on-one training sessions either at your workplace or at our office in Midland. Alternatively, customised sessions for your acquisition or interpretation groups can be held at your organisation using your data.

EMIT Workshop Schedule and Booking Form 2012 (Maxwell and CSIRO)
EMIT Workshop Agenda – Maxwell
EMIT Workshop Agenda – CSIRO

Participants are encouraged to book four (4) weeks ahead to ensure their desired workshop dates. Each workshop will be confirmed only when the minimum of four (4) bookings have been received. Workshops are limited to ten (10) participants.


Helicopter Magnetic and Radiometric Survey on Anza Property in Colombia

Posted by on Saturday, 16 June, 2012

Waymar Resources Ltd.  announces the completion of a 2,867 km helicopter magnetic and radiometric survey, covering approximately 260 km2, over their Anzá project in Antioquia, Colombia. Preliminary data images can be found on the Waymar website at the following links:

http://www.waymarresources.com/_resources/maps/RTPAnza_image1.jpg

http://www.waymarresources.com/_resources/maps/RTPAnza_image2.jpg

http://www.waymarresources.com/_resources/maps/RTPAnza_image3.jpg.

The survey was completed by MPX Geophysics Ltd., of Markham Ontario, at a nominal altitude of 70m and 100m traverse line separation. The results will be used to aid geologic mapping, identify structures and alteration associated with hydrothermal mineralization and possible porphyry copper-gold systems within the project area. The survey data is currently being processed by MPX and final products are expected by July 2012.

Waymar has also completed a structural evaluation using Radar images over the entire area of the land package held in the Anzá district. The images were acquired, processed and interpreted by Alto Americas S.A., of Buenos Aires, Argentina, a company that specializes in remote sensing products and services.

“The preliminary geophysical data confirms that the Aragón structure, which controls the gold mineralization at the Anzá deposit, is a continuous, district-wide feature,” commented Pablo Marcet, CEO. “The combination of Magnetics and Radiometrics is giving us a powerful tool to identify and prioritize targets in our extensive land package. Together with the interpreted Radar images, previous geological mapping and geochemistry, we have an excellent technical base to start testing the numerous exploration targets in the district. Meanwhile, we continue to drill at Anzá and aim to release a new batch of drill results before the end of June.”

Peter Diorio, P. Geo., President of GeophysicsOne Inc. is the qualified person related to the helicopter magnetic and radiometric survey and has reviewed and verified the technical disclosure contained herein and accepts responsibility for such disclosure. David Makepeace, M.Eng., P.Eng., senior geologist for Micon International Limited is the qualified person for the Anzá drill program, as defined by National Instrument 43-101.

There has been insufficient exploration to define a mineral resource at the Anzá property to date, and it is uncertain if further exploration will result in targets being delineated as a mineral resource. Any potential quantity and grades are conceptual in nature.


Some informal notes from the EAGE workshop

Posted by on Tuesday, 12 June, 2012

MATT HALL: “This year is the 20th anniversary of the release of Seismic Un*x as free software. It is six years since the first open software workshop at EAGE. And it is one year since the PTTC open source geoscience workshop in Houston, where I first met Karl Schleicher, Joe Dellinger, and a host of other open source advocates and developers. The EAGE workshop on Friday looked back on all of this, surveyed the current landscape, and looked forward to an ever-increasing rate of invention and implementation of free and open geophysics software.

Rather than attempting any deep commentary, here’s a rundown of the entire day:..”

Read more


Aeromagnetic structural analysis for gold exploration

Posted by on Wednesday, 6 June, 2012

The new issue of the Earth Explorer

and the article by Dan Zolotnikov


Mining IQ: airborne TEM for VMS discoveries

Posted by on Friday, 1 June, 2012

Mining IQ recently interview Neil Richardson, P. Geo. Chief Operating Officer. In this interview Neil speaks frankly about new advancements in exploration technology as well as the impact of VTEM on their current projects.

What is your role at VMS and experience?

I am the COO and oversee all the exploration for VMS.  I have over 24 years’ experience in the exploration and mining business – in Manitoba as well as Ontario. I have also worked in the volcanic terrain up in Manitoba for the last 18 years.

How and why did you embark on a career in mining?

I started off in a small mining town and got involved in staking claims and helping the guys blaze and cut lines and that got me interested in the geology side of things. From there I went to college and got my geology certificate and my career in the industry.

In terms of exploration – can you comment on insights from your current projects?

With respect to our Reed Copper project – which is our flagship project – we are currently under JV with HudBay Minerals. Percentage wise it splits 70% them and 30% us. We are carried to production in that project, and have recently announced a preliminary feasibility study that came out early earlier in the year.  We are delighted to have shown the project is robust, so we are looking forward to production in early 2014 and reaping some of the benefits for the next 6-7 years of production.

Are you using VTEM technology on these projects and why?

The Reed Copper deposit was a VTEM(Versatile Time-domain electromagnetic) anomaly discovery. There are lots of systems out there (we use Geotech’s platform) to choose from so you have to determine which one is right for you. What mattered to us was a good noise to data ratio so you don’t get a lot of noise in the data. We selected on that basis and continue to use it.

What is VTEM technology? And why is it revolutionizing the way you and others are conducting your exploration activities?

It works by using a very low flying and slow flying helicopter that charges a current into the ground and that current generates an electromagnetic field.

The sulphides themselves are conductors and generate their own EM field – and then when the current is cut off the sulphide bodies emit their own electrical current decay field and that’s how anomalies are measured. Where sulphides are not present, no electrical field is present, therefor no anomaly, but when you fly over a sulphide body (or even graphite) they emit their own EM field,  so you can detect these EM anomalies.

Massive sulphide bodies are very conductive and have little to no resistance. It’s like having a piece of wire except it’s in a rock mass and that’s how well the EM current will flow.

How does that affect exploration activities?

These anomalies are unusual and when we find them we are then able to plan our drilling. Graphite also is a good conductor and this presents a challenge for a geologist who has to differentiate between graphite and sulphide anomalies. There is no geophysical way to differentiate between the two types of anomalies.. However, there are a number of ways you can assess a target – look at historical drilling in the area, regional geology etc. that might help prioritise some targets.

Also a lot of the deposits are occurring with a magnetic anomaly too and you can also use that as criteria to assist you in deciding which target to drill first. So you can decide to drill where there is EM and Mag or just EM. Chances are that you will go with the EM and Mag target first.

Using this technology you are able to be more focused and targeted with your exploration activities?

Exactly.  It also helps to hone in on your property package significantly. If you are looking for VMS (volcanic hosted massive sulphide deposits) in particular areas where there are no anomalies tell you that the top 200 – 300 metres of the rock formations don’t have any EM anomalies, therefore no massive sulphides, so very quickly you can look at just focusing on select regions in your property packages. It helps with efficiency and productivity of exploration.

It tells you that there is something interesting there / something out of the ordinary and something electromagnetically is causing that anomaly and response. It could be a mix of many things – it could be a mixture of sulphide bodies, or sulphide bodies with graphite or mixture of sulphide bodies with ore bearing minerals.  If you are above the Paleozoic cover (dolomite) then you can prospect your targets, but if they are below the dolomititic rock you are forced to drill it or apply soil geochemistry over the top of the anomalies to see if you can decipher the responses.

What’s the potential for VTEM in terms of future opportunities?

It’s going to become more widely used. Lots of systems are now out there and they are all really applicable and useful. These guys will be able to generate more powerful instruments and work on the data to noise ratio – and with that in mind we might be able to see a bit deeper with more surveys. Also if we have VTEM anomalies we are able to go over the ground and do ‘time domain EM survey’s – and this means that we can generate even deeper power because you are actually on the ground generating large loops of EM current to detect deposits.

Any final tips and tricks you’d like to share based on your experience of using this type of survey technology?

No tricks but some tips…always match your survey method to your deposit model especially geophysically. If you are looking for massive sulphide you should always use EM. You might even want to look at some frequency EM surveys instead of just time domain EM but match the method to your deposit model. Also be clear on the type of target you are looking for.

Mining IQ thanks Neil.For more information about VMS Ventures please visit: http://www.vmsventures.com/

More about Neil:

Neil has over 24 years’ experience in mineral exploration and mining operations of base metal and precious metal deposits throughout Canada. Neil was most recently the Manager of Exploration for Murgor Resources Inc. where he was responsible for delineation of two projects to National Instrument 43-101 compliant mineral resource estimates, project generation, process discipline and corporate growth strategies. Prior to joining Murgor in 2006, Neil worked for HudBay Minerals Inc as a Senior Exploration Geologist responsible for greenfield and brownfield projects in the Flin Flon – Snow Lake area. He was part of a team that discovered a number of new mineralized zones throughout the belt. He also has past experience as a Senior Mine Geologist with extensive background in resource – reserve estimations and operations. He is a member of the Association of Professional Engineers and Geoscientists of Manitoba.