A short course on the why, how, and what of geophysical inversion

Presented by the B.C. Geophysical Society

This is a 2-day workshop consisting of 1 day of lectures (April 24th) followed by a 1 day hands-on workshop (either April 25th or 26th). Delegates can register for just the lectures or both the lectures and workshop.

Registration available until April 15th at: www.bcgsonline.org

Date: April 24th – 26th 2013

Address: SFU Downtown Campus; Vancouver BC

Registration: Registration is now open!  Please fill out attached pdf form (link below) and click submit.  Registration will be complete once payment is made via Paypal link.  Delegates are asked to choose one workshop day among April 25th or 26th.

Day 1 – Introduction to inversion
– Introduction to inversion in exploration

Reasons for doing inversion
Range of inversion options: magnetics, gravity, EM, IP-resistivity, seismic
Fitting geology and data

– Background on inversion

Unconstrained/constrained
Joint and collaborative
The future of inversion

– Before inversion – forward modeling

forward modeling
petrophysics drives the story
complexity vs. adequacy

– Case studies

Potential fields
EM
IP-resistivity

Day 2 – Workshop with Case studies
Multi-disciplinary teams will use geological, geophysical and geochemical data from two deposits (Babine Lake porphyry Cu-Mo, BC and Minto Cu, YK) to develop exploration targets. Teams will present their evaluations of the data to stimulate group discussion.

Inversion results for the available geophysical surveys will be presented to demonstrate state-of-the-art technology and best practices.
Sponsors for the short course are currently being solicited. Please contact Victoria Sterritt at Victoria.Sterritt@teck.com for details. Proceeds go to the KEGS Foundation.
For those interested in more information about the short course, please email info@bcgsonline.org

GoldON Resources begins 2013 Exploration on Swayze Gold Property in Ontario’s Abitibi Greenstone Belt – Video Summary on www.investmentpitch.com

Adventure Gold Inc. announces the commencement of a significant exploration program on its 100%-owned Detour Quebec project along the Detour Gold Trend (“DGT”) in Abitibi, Quebec. The exploration program will consist of airborne and ground geophysical surveys on the best targets identified last year following a comprehensive geological modeling of the DGT. A helicopter-borne electromagnetic VTEM-type survey (VTEM) totalling 575 km, 400 km of detailed ground magnetic surveys and 30 km of Induced Polarization (IP) surveys are currently underway or will start soon.

Since last year, the Company has been actively exploring its Detour Quebec properties by completing 103 kilometres of IP surveys, 365 kilometres of detailed ground magnetic surveys, and 912 kilometres of high-definition helicopter-borne magnetic surveys. This work has highlighted new and very promising drilling targets by identifying IP anomalies close to strong gold anomalies in till, along strike from positive gold results intersected by historical drill holes. Geological modeling outlined nine possible distinct bedrock source areas along the Sunday Lake, Massicotte, and Lower Detour/Grasset gold deformation zones on our properties. Three possible bedrock source areas were covered by geophysical surveys (IP and Mag) in 2012 and nine new ground geophysical surveys will be completed over the other areas this year (see Figure 1 and press release dated November 14, 2012).

On the two northernmost claim blocks (Manthet and Martigny) respectively located 15 and 25 kilometres from the Detour Lake mine, adjacent and close to the Ontario border, two VTEM surveys totalling 575 km will be completed. Historically, very little exploration work has been completed on these claims and limited drilling in one area outlined VMS-style gold, zinc and copper mineralization. This geological environment shows some similarities with the Martiniere project located further east, where Balmoral Resources Ltd is actively exploring the Martiniere West, Bug Lake, and Martiniere East zones. In this emerging gold play, very high-grade drill intersections were recently reported, namely 273.0 g/t Au over 3.9 metres and 11.7 g/t Au over 8.9 metres (see Balmoral Resources Ltd press releases dated August 16, 2012 and January 28, 2013). The VTEM-type survey is known for its exceptional depth penetration and provides a more accurate definition of electromagnetic anomalies than conventional systems. At the Detour Lake mine, the original discovery of the main zone is directly credited to the presence of an airborne electromagnetic anomaly detected during an Input-type survey in 1974. On the Manthet and Martigny claim blocks, new east-west and northwest trends outlined last year and interpreted as subsidiary faults of the Sunday Lake deformation zone will be covered by the VTEM survey.

“Following recent successes in identifying quality drilling targets, firstly by outlining the best areas using our comprehensive geological model and secondly by performing detailed geophysical surveys, we have great expectations for the 2013 geophysical surveys, which will be mainly conducted over new claims acquired in April 2012. Once this work has been completed, we will plan a substantial drilling program scheduled to start next winter”, stated Marco Gagnon, President and CEO of Adventure Gold Inc.

The Detour Quebec project includes nine properties, 100%-owned by the Company, totalling 747 claims and covering a surface area of 40,397 hectares or 404 km². The Detour Quebec properties are strategically located along the DGT over 80 km strike length and encompass three major proven gold structures, namely the Sunday Lake, Massicotte, and Lower Detour/Grasset deformation zones. The DGT hosts the Detour Lake gold deposit with NI 43-101 proven and probable reserves of 15.6 M ounces of gold (from global measured and indicated resources of 23.3 M ounces and inferred resources of 5.8 M ounces: see Detour Gold Corporation press release dated January 25, 2012). Adventure Gold’s Detour Quebec properties are adjacent to Detour Gold Corporation properties located on the Ontario border.

For more information on the Detour Quebec properties, please see Figure 1 and visit our website at www.adventure-gold.com:

http://www.adventure-gold.com/common/documents/Detour_Figure1_Travaux2013_26fevrier2013.pdf

Jules Riopel, P.Geo., Vice-President Exploration and Acquisitions, acting as the Company’s “Qualified Person” as defined by NI 43-101, has reviewed this press release and supervised the exploration program on the Detour Quebec properties.

Pennsylvania Council of Professional Geologists announces Resistivity/IP/SP for Environmental and Engineering Applications Short Course on February 27, 2013 in Harrisburg, PA. The course instructor will be Brad Carr, Ph.D (formerly of AGI). This 1-day short course will cover DC Resistivity, IP, and SP topics such as: theory; data acquisition; field procedures; data processing; data presentation; and interpretation. The course will also provide attendees a better understanding of the strengths of 1D, 2D, 3D and 4D resistivity/IP imaging and SP monitoring methods through the discussion of various case histories, survey design, forward modeling and inversion and the use of data processing/analysis software as applied to surface, borehole, marine and time-lapse monitoring data.

Overview

Electrical Resistivity/IP/SP for Environmental and Engineering Applications is designed for professionals who are involved in, beginning to consider, or have oversight/review responsibilities of others currently conducting DC Resistivity, IP or SP surveys on engineering or geotechnical projects.

This 1-day short course will cover DC Resistivity, IP, and SP topics such as: theory; data acquisition; field procedures; data processing; data presentation; and interpretation. The course will also provide attendees a better understanding of the strengths of 1D, 2D, 3D and 4D resistivity/IP imaging and SP monitoring methods through the discussion of various case histories, survey design, forward modeling and inversion and the use of data processing/analysis software as applied to surface, borehole, marine and time-lapse monitoring data.

Details..

Belmont Resources Inc. updates the progress on the Berthiaume (the “Be”) property.

Geosig Inc. of Quebec completed approx. 46.2 km. of induced polarization (TDIP) geophysical survey with a dipole-dipole electrode configuration on the three areas line cut, and as recommended in the NI 43-101 Report to establish the potential of the structural features of the property. A provision for drilling has been budgeted to test the IP anomalies from the IP survey interpretation, which is expected in a couple of weeks.

The Be Property is located halfway between the towns of Matagami and Lebel-sur-Quevillon, located in the prolific Abitibi greenstone belt of northwestern Quebec. It consists of two designated claim blocks of eight claims covering 447.84 ha (West Block) and 23 claims covering 1,287.56 ha (East Block).

Regional and local geology

Details..pdf

Joutel Property – Exploration Planning

The Company will also be considering recommended line cutting and IP work next on its Joutel Township optioned property. Significant activity has been announced recently by other exploration companies in the Joutel area such as: Bold Ventures Inc. (“BOL”)-December 7/12 nr; Visible Gold Mines (“VGD”)-December 4/12 phase 2 drilling nr; and Globex Mining (“GMX”)-November 5/12 nr announcing recent acquisition of 100% interest in the former Joutel copper mine (copper, zinc, silver) where Globex already has landholdings that include the 100% owned Eagle gold (gold, silver) and Poirier mines (copper, zinc, silver, gold), and a large package of prospective claims with excellent exploration potential.

GoldQuest presents the initial data from an extensive IP survey and a summary of the 2012 drilling at Las Tres Palmas project, in the Dominican Republic, which includes the Romero and Escandalosa discoveries. The company has ordered a fourth drill rig, capable of reaching 700 metres, which will be mobilized in January 2013 to drill new targets. Assays from the remaining 9 holes drilled at Romero in late 2012 will be released in January 2013.

The Company is currently undertaking an IP survey covering the complete Las Tres Palmas trend and outlying areas in the Company’s extensive land position, including Los Comios, Romero West, and Jengibre. This survey, conducted by Insight Geophysics, will investigate to a depth of approximately 500 metres, which is almost twice the depth of the 2011 IP survey that identified the Romero mineralization. Initial results of the current survey at Romero and north of La Escandalosa have identified deeper chargeability anomalies, where higher readings appear to correlate with sulphide mineralization (http://goldquestcorp.com/images/romero_map_new_insight_ip_lines.jpg).

“The 2011 IP program which led to the Romero discovery identified the overall trend, and the new, deeper penetrating IP shows strong correlation with the high grade copper/gold intersections and provides further guidance about the geometry of the targets,” commented Julio Espaillat, GoldQuest’s President and CEO. “Drilling in the new year will continue at Romero, which remains open at depth and along strike, and will test new targets around the Las Tres Palmas Trend.”

The IP survey at Romero, which is located in the most northerly lobe to date of the Las Tres Palmas trend, displays enhanced detail of resistivity and chargeability anomalies, allowing the Company to refine their planned drilling targets, and to gain a greater understanding of the mineralization style and attitude of controls on emplacement of gold, copper and other metals (seehttp://goldquestcorp.com/images/romero_200w.jpg). The East-West mineralized trend in the northern part of the Romero chargeability anomaly, identified in 2012 by drilling, is visible in this survey, and appears to shows a strong vertical element, strengthening at depth. The Company intends to undertake further drilling in January to test the high chargeability occurrences with three diamond drill rigs, closely followed by testing further refined IP targets as they are generated.

Several IP survey lines have been completed directly north of La Escandalosa outcropping gold occurrence, 2 kilometres south of the Romero discovery, where the company reported a NI 43-101 compliant inferred resource of 3.1 million tonnes grading 3.14 g/t gold (see release of Aug 20^th, 2012). The first IP survey lines show a strong chargeability anomaly and La Escandalosa mineralized horizon dips towards this untested anomaly which is open at depth and to the north (see http://goldquestcorp.com/images/escandalosa_IS100N-IP-UTM.jpg). Drilling will commence here with a deep rig, slated to arrive in the Dominican Republic in late January.

The San Juan project was discovered by GoldQuest geologists during the Gold Fields-funded regional exploration programme in an area believed to have no previous history of mining or exploration. The project occurs in the Cretaceous Tireo Formation which comprises of a mixed volcanic package dominated by lavas and volcanoclastics.

Castle Peak Mining Ltd. announces Promising Surface Sampling Results at the Dansuom Target on the Pow Concession at the Company’s Akorade Project in the Southern Ashanti Belt in Ghana, West Africa. the Reported Results Represent Approximately 25% of the Road Samples Collected to Date. Concurrently a Gradient Induced Polarization Survey and Subsequent Pole-Dipole Induced Polarization Survey was Completed in Order to Better Refine Drill Targets in the Area.

Highlights of the Sampling Include:

• Channel POWCS008: 70.0m of 1.01 g/t Au including 26.0m of 1.76 g/t Au;
• Channel POWCS007: 12.0m of 0.54 g/t Au;
• Channel POWCS005: 2.0m of 2.38 g/t Au.

Highlights of the geophysical survey include several kilometer scale coincident resistivity and chargeability anomalies. Two of these significant anomalies are spatially associated with the large, 1,500m by 250m, Dansuom gold in soil anomaly defined by soil values greater than 0.2 g/t gold. (To see Figure 1: Anomalies in Dansuom Target Area, please visit the following link: http://media3.marketwire.com/docs/cap1205i.pdf)

Commenting on the results Darren Lindsay stated, “Although dealing with a less than predictable rainy season this year, we have been able to forge ahead with geophysical surveying, mapping and sampling to better determine the resource potential in the Dansuom target area. Strong geophysical anomalies coincident with our existing geochemical anomalies and new road cuts exposing vein stock works, alteration zones and contact zones are showing the promise of this exceptional target.”

Update on Regional Exploration

A total of 690 samples for multi-element analysis have been collected across the Akorade project area, with approximately 300 samples remaining to be collected across the mineral licenses at 400m by 400m spacing. To date all samples from Enyinase, Bonsaso, Kedadwen and Dompem have been collected, while mapping and sampling still continues across the POW and Great Yorkshire licenses. Mapping from these efforts is being compiled to refine our existing base map.

Geology & Mineralization

The properties are underlain by NNE-SSW Birimian Age metavolcanics and Tarkwaian metasediments of the Ashanti Belt of southwestern Ghana. These rocks are intruded by two (2) chemically distinct granitic suites which consist of: 1) Belt associated Dixcove intrusive and 2) Basin associated Cape Coast intrusions.

Deformation and metamorphism of Birimian metavolcanics and Tarkwaian metasediments (conglomerates, arkose, sandstones, siltstones and shales) are related to the Eburnean II orogeny with five (5) distinct successive deformation phases, (D1 to D5) with D2 faults and D5 reactivation for major deformation events such as strike slip, dilatants breccias, quartz veins and lens networks with pinch and swells (boudinage) hosted within faults and shear zones.

Shear zones on the property are developed within the metavolcanics. The granitoid intrusions have been accompanied by hydrothermal activity evidenced by the numerous lenses of quartz veins and veinlets within the metavolcanics. The most prominent quartz structure, in a shear zone and within the metavolcanics on the Apankrah hills, has a NE-SW orientation and dips steeply to the southeast. The quartz vein, more than 1 metre in width and strike length of more than 100 metres is shattered and pyritized in few places.

The most favourable areas of gold mineralization in the Birimian and the Tarkwaian are found:

1. In a major shear system in early Proterozoic rocks, e.g., Prestea and Obuasi
2. In intermediate and mafic intrusions, mainly within the “greenstone” belts
3. In mafic volcanics in some areas, especially in the Ashanti belt, e.g., Konongo
4. In transitional zones between the belts and the basins
5. The banket conglomerates of the Tarkwa district
6. Oxide and laterite occurrences

The Bonsaso concession is dominated by well-foliated Birimian metasedimentary units. Detailed geological mapping of the concession is ongoing, but is hindered by the presence of a significant weathering profile. The geology is currently thought to be similar to that of the Iduapriem mine.

Gold mineralization in the area has been observed in shallow dipping quartz stockworks and veins. Quartz veins occur as a series of shallow dipping, thin, en-echelon quartz veins up to and greater than 10 centimetres wide. The veining is also associated with a quartz-pyrite alteration halo that extended several metres into the hanging wall and foot wall of the veins. This is thought to represent the type of deposit that typically forms along regional fault and fracture systems within Ghana, whereby fractures act as pathways for Au-bearing hydrothermal fluids. Precipitation of gold and quartz then results from changes in pressure, temperature and/or wall rock interaction. Mineralization is also associated with Tarkwaian conglomerates, probably of the Banket series and representative of placer mineralization, which is analogous to that at the Iduapriem mine. 

Premium Exploration Inc.  reports that a ground-based Induced Polarization (“IP”) geophysical survey at the Idaho Gold Project (“IGP”) has successfully outlined a new target at the X Zone. This new IP target exhibits coincident highly anomalous gold-in-soil and airborne mag/EM signatures. These characteristics are similar to those associated with the three known deposits along the IGP and suggest potential for the discovery of new gold mineralization at the Idaho Gold Project. Details.

This is the 12^th advanced target identified on the project. These twelve targets all exhibit highly anomalous geochemical signatures associated with strong airborne magnetic and electromagnetic and ground IP geophysical anomalies. The majority of the targets are yet to be drill tested.

For maps of the coincident X Zone IP and Soil targets, please click: http://bit.ly/XZone_IPTarget and http://bit.ly/XZone_GoildinSoils.

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

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

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

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

See WallbridgeMining.com for more information about the Broken Hammer project.

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.

CuOro Resources Corp. announces that Geotech Ltd. of Aurora, Ontario (“Geotech”) has been engaged to complete a 416 line-kilometre, helicopter-borne versatile time-domain electromagnetic (“VTEM”) survey of the Santa Elena Copper-Gold Project, in Antioquia Department, Colombia.

Geotech’s VTEM system has been shown to be excellent at identifying conductive, massive-sulphide bodies as well as mapping lateral and vertical variations in resistivity. The VTEM system is also equipped with a high sensitivity magnetometer which can aid in mapping geologic structure and lithology.

The survey is expected to be completed during October 2012. The Company will immediately investigate any targets generated by the survey with exploration and drilling.

Santa Elena Overview

Santa Elena is classified as a bimodal-mafic VMS deposit. This type of deposit is similar to that found in many of the major district of the Precambrian Shields of Canada, Western Australia, and Scandinavia, as well as the Urals and in the Cretaceous of Peru. The latter is comprised of the giant Tambo Grande deposits; TG1 and TG3, adjacent deposits comprising a single ore system contain a non 43-101 compliant resource of over 138 MT of 1.3% Cu and 1.1% Zn. The Tambo Grande deposits are in a very similar setting to the Santa Elena occurrence, and given that both are in what appears to be an oceanic back-arc setting, this district may be a model for Santa Elena. It is important to note that VMS deposits almost always occur in districts, and that their sizes are log-normally distributed.

The concessions contain 1,287.5 hectares near the north end of the Antioquia batholith, at the intersection between the San Pablo formation (Cretaceous marine sediments) located to the north, the basaltic volcanic flows located to the west, and the Antioquia batholith quartz-diorite complex to the east.

The infrastructure is excellent and includes paved road access, two hydroelectric plants within 5 km, and abundant water supply.

Geological mapping and sampling has identified 3 VMS areas of outcropping (TEM-1, TEM-2, and TEM-3) all of which coincide with historical geophysical anomalies. Several new mineralized outcrops have been located recently south of the known VMS outcrops.

Recently completed geophysical surveys have validated the historical data, as well as produced many new targets which will be drill tested.

Summary of Geophysics

A surface geophysical TEM survey at 50 m intervals was conducted on a selected area of the property where outcropping mineralization was visible. The survey was conducted by VAL D’OR Geophysics for Noranda Mining and Exploration Inc in 1996-1997.

The historical ground geophysics had identified 4 strong conductors with good vertical extent, 3 of which are coincident with the TEM-1, TEM-2, and TEM-3 outcrops.

An airborne magnetometer and radiometric survey was flown in August 2011. These surveys were followed-up by ground based induced polarization and resistivity surveys. These surveys validated the original survey data, and also generated several new drill targets which are currently being drill tested.

The company plans to initiate down-hole TEM surveys along with additional induced polarization and resistivity surveys in January 2012.

Purepoint Uranium Group Inc. has released the results of this summer’s geophysical survey at its 100% owned Turnor Lake Project in Saskatchewan’s Athabasca Basin. The induced polarization survey has moved the exploration of this property further north, covering the high-priority Anvil South uranium target area.

____________________

-     The induced polarization (IP) survey was conducted over the Anvil South grid with the purpose of outlining possible low apparent resistivity chimneys (LARCs) in the sandstone. LARCs are considered to be excellent drill targets when found within a favourable geologic setting as they represent potential zones of hydrothermal alteration.

“The IP survey data is of high quality, free of noise and aligns well with historic drilling data, unconformity depth, and overburden thickness,” said Roger Watson, Purepoint’s Chief Geophysicist. “Numerous geophysical LARCs have now been interpreted; many of them correlating with an untested, well-defined electromagnetic conductor.”

Highlights:

• Low apparent resistivity chimneys (LARCs), possible zones of hydrothermal alteration, have been outlined within the Anvil South zone and correspond with untested EM conductors;
• The resistivity survey successfully identified a LARC that corresponds with altered sandstone intersected by historic hole OD-1 that also returned 468 ppm U over 3.4 m;
• The geophysical results collected by Purepoint at Anvil South, which includes resistivity, gravity, and highly detailed airborne electromagnetics and magnetics, have been compiled with all available historic data identifying five new high priority drill targets;
• A strong geochemical anomaly of uranium, nickel and cobalt was outlined at the Klaproth South target in 2011 and verified by re-sampling in 2012.

Anvil South

The Anvil South grid covers over four kilometers of electromagnetic (EM) conductors that were outlined by a VTEM airborne survey in 2006. The EM conductors show significant offsets interpreted to be caused by faulting. Purepoint conducted a gravity survey over the Anvil South grid in 2008 but has not yet drill tested geophysical targets in this area.

During August 2012, over thirty line-kilometers of IP surveying was completed at Anvil South by Peter E. Walcott & Associates Ltd. of Vancouver, BC. The data was inverted by Purepoint using IP inversion software developed by the University of British Columbia. The IP survey was successful in that well defined resistivity “chimneys” (LARCs) were identified in the sandstone. The Anvil South LARCs have now been plotted in relation to resistivity, gravity, EM conductors and magnetics and five priority drill targets have been identified.

The historic drill hole OD-1, drilled at Anvil South by the Saskatchewan Mining Development Corp. in 1985, intersected 3.4 m of 468 ppm U within a highly altered graphitic pelite immediately below the unconformity. Anomalous concentrations of arsenic, nickel and cobalt were associated with the alteration encountered in the OD-1 drill hole.

Turnor Lake

The Turnor Lake Project is 100% owned by Purepoint. This 9,705 hectare property covers graphitic electromagnetic (EM) conductors that are directly associated with high grade uranium showings on adjoining properties, namely Cameco’s La Rocque occurrence (up to 33.9% U3O8 over 5.5 m) to the west and Areva’s HLH-50 intercept (5.2% U3O8 over 0.38 m) located to the south. The project lies in close proximity to several uranium deposits, including Roughrider, Midwest Lake, McClean Lake and Eagle Point, and has a shallow depth to the unconformity of less than 200 metres in most areas.

A series of detailed geophysical surveys have been conducted on the property since November 2006 and numerous drill targets, including EM conductors and structurally complex areas having evidence of intersecting structures, remain untested. Drill targets have now been prioritized with the completion of the 3D Targeting Workflow Process by Mira Geoscience.

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

HIGHLIGHTS

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

Reconnaissance Geophysical Survey Results

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

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

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

Drilling Update

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

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

Seabridge Gold announces that exploration drilling this summer on its 100%-owned KSM Project in northwestern British Columbia has discovered an epithermal style of gold occurrence which contains significant widths of higher gold grades including narrow veins with the highest gold grades found at the project to date. The claim blocks are in the Iskut-Stikine region in British Columbia, approximately 20 kilometres southeast of the Eskay Creek Mine.

Geophysics

Induced polarization surveying was utilized as final confirmation, prior to drilling, that the sulfide or mineralizing system at KSM was of a world class scale and could satisfy Noranda’s minimum exploration criteria.   A pole – dipole IP survey was conducted on 7 widely spaced lines and was designed for the best combination of depth penetration and resolution. It employed an “expander array”, consisting of four 100m receiver dipoles, two 200 m receiver dipoles and finally two 300 m receiver dipoles for a total array length of 1500 m.  The widespread strong chargeability and low resistivity responses detected in rocks beneath the Sulphurets thrust fault satisfactorily demonstrate the extent of sulfide bearing, altered rocks.  However, as is typical of the IP method, it does not differentiate between areas of strong pyrite but weak chalcopyrite (copper sulfide) mineralization or those with both pyrite and chalcopyrite.

On the contiguous with Seabridge’s KSM property Treaty Creek property (American Creek Res.) magnetotelluric survey carried out in the summer of 2011 (Quantec Geoscience). The survey revealed a large conductive body at depth which extends upward to the surface and can be mapped between MT sites 214 and 216.  This area contains gossanous outcrops along with surface mineralization and also includes the previously explored Orpiment zone.  The survey also shows a more prominent feeder extending over 3km from the large conductive body at depth.  This feeder is approximately 750m wide and extends to the location of the Copper Belle zone where another large conductive body (less than 200ohm-m) appears on the survey.  The north east tip of Copper Belle, a bulk-tonnage type gold-copper-molybdenum porphyry, appears to be located at the north east tip of this lowly resistive anomaly. Details..

Drilling

KSM has proven and probable reserves totaling 38.2 million ounces of gold and 10 billion pounds of copper in four very large deposits which have an average grade of 0.55 grams per tonne of gold, 0.21% copper and 2.74 grams per tonne of silver. The new discovery has intercepts of gold and silver grades that are substantially higher. Drill hole C-12-01 encountered epithermal style mineralization in an entirely new zone at shallow depth and low elevation, called the Camp zone. This hole returned two 2 meter intercepts grading above 8 grams of gold per tonne (greater than 0.25 ounces of gold per tonne). A second hole, C-12-02, drilled 400 meters southeast of C-12-01, intersected 22.0 meters averaging 8.94 grams per tonne of gold and 41.6 grams per tonne of silver. This hole returned a 2 meter intercept of 66.7 grams of gold per tonne (more than 2 ounces per tonne) and 287 grams per tonne of silver (nearly 10 ounces per tonne). A third hole into this zone, C-12-03 drilled 900 meters to the northeast of C-12-02, returned 98.7 meters at an average gold grade of 2.11 grams per tonne including 17.7 meters averaging 4.41 grams per tonne of gold and an additional 6.0 meter intercept averaging 6.24 grams of gold per tonne.

Seabridge Gold CEO Rudi Fronk said the new discovery appears to have the potential to make a significant contribution to KSM’s already robust economics. “Obviously, we are at a very early stage in the discovery process. However, the Camp zone is readily accessible and has the highest gold grades found to date. All three holes into this new zone found excellent gold values,” he said.

“This is not the target we were looking for in this year’s program…we were exploring to find a high grade, copper-rich core and that work continues with encouraging results. Our original assumption was that neighboring Pretium Gold had the higher grade, epithermal (top) portion of the very large gold-copper porphyry system we see at KSM and that our property would probably host the high grade copper core of the entire complex at depth. The new Camp zone appears to be part of an epithermal system with chemistry similar to that found nearby at Pretium’s extraordinary Brucejack deposit. We intend to complete another six holes into the Camp zone this drill season to establish the orientation of this new discovery. At the same time, we continue to pursue several promising copper core zone targets. An additional exploration drill rig has been mobilized to site, bringing the total to three,” Fronk said.

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Pelangio Exploration Inc. announces a new gold discovery resulting from nine additional diamond drill holes totaling 1,891 metres in a newly drilled area of the Manfo Property in Ghana. Highlights of the results reported today include:

Nkansu Gold Discovery

• 0.57 grams per tonne (g/t) gold over 70 metres (including 1.00 g/t gold over 12 metres) in SGDD-201 from 39 metres downhole;
• 0.77 g/t gold over 23 metres (including 1.06 g/t gold over 12 metres) in SGDD-203 from 42 metres downhole.

“Gold bearing intersections in this series of nine diamond drill holes indicate an area of mineralization along a 700 metre distance, on the north and south peripheries of a well-defined high resistivity induced polarization (“IP”) anomaly,” stated Warren Bates, Senior Vice President Exploration. “The new discovery between the Pokukrom East and Nfante West zones was made in an area of hardpan cover, or duricrust, where the geochemical response is very weak. The results of these holes, which were spotted based on high resolution airborne magnetic data and early-on orientation resistivity surveying, confirm that geophysical data coupled with rock properties gleaned from our drilling program is a viable targeting method. Based on the more extensive IP surveying that we completed early this year, we believe that we have only drilled the periphery of this new discovery. Our program is already paying dividends as we have more than 15 targets for further testing with drilling and surface work going forward.”

The newly discovered gold mineralization is associated with sericite and hematite altered granitoid rocks, just as at Pokukrom East which is 2.5 km to the northeast and Nfante West, 1.3 km to the southwest. The mineralization has been intersected along a distance of approximately 700 metres.

Plan views, and cross sections illustrating the Nkansu drill holes and intersections discussed above are available at http://www.pelangio.com/Projects/Ghana/Manfo/Exploration-Results/Nkansu.aspx.

The Manfo Property is predominantly a “cover” play, with geochemical anomalies occurring with erosional “windows” through the material overlying bedrock and into the underlying mineralization. In areas of cover, geochemical response is weak. Airborne magnetics, coupled with responses to IP and resistivity surveys will be key to discovering mineralization in these blind areas. The surveying has identified more than 15 new targets exhibiting such resistivity highs in areas where cover may mask geochemical anomalies. The Company has drill tested nine of these targets for new discoveries and has begun an exploration program which will consist of surface work or drilling on the remainder in the coming months.

MacDonald Mines Exploration Inc. announces results from the most recent drill program on the Butler 3 target on its Butler property located just 36 kilometres west of the Big Daddy Chromite deposit.

• The last drill program hit zinc-rich massive sulphide mineralization with tenors typical of past and current producing VMS mines – the zinc rich sulphides are generally found on the periphery of these types of deposits
• VMS systems typically get more copper-rich the closer one gets to the centre of extrusion
• VMS mineralization identified on the Property suggests there are multiple centres of extrusion, and therefore the potential for multiple VMS deposits (i.e. a VMS camp)
• Geophysics indicates there is ample room for deposits in excess of 20 MT
• Company geoscientists believe the constraining geologic markers bounding VMS mineralization have been identified on the Property, and that future exploration should be able to vector into more copper-rich mineralization.

Butler 3 Section Showing Mineralized Zones

Geophysical Model

The current geophysical data set includes:

• Airborne, Surface and Borehole Time Domain EM
• Airborne and Ground Magnetics
• Surface and Airborne Gravity
• IP and Complex Resistivity

A model of this data constrained by the current mineralized intersections, geochemistry and geology indicates the potential of the Butler Property to host not only VMS occurrences of size but also multiple centres.Plan maps of this compilation for Butler 2 and 3 are below.

Each occurrence consists of an underlying copper-rich stringer zone that is separated by a ~20m massive black felsic “marker” flow from several overlying horizons of zinc-silver-copper massive sulfide. The footwall rocks are all intensely altered, characterized by widespread sodium (Na) depletion and more localized manganese (Mn) enrichment (typical of VMS camps like Sturgeon Lake).

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.