Posts Tagged silver-lead-zinc

Airborne EM before the discovery of wide spread gold-silver-zinc-copper mineralization

Posted by on Tuesday, 18 February, 2014

Bayfield Ventures Corp. announces the completion of a National Instrument (NI) 43-101 Technical Report on the Company’s 100% owned mineral rights “B” Block gold-silver property, Rainy River district, north-western Ontario.

 

 

 

 

 

 

 

 

 

Drilling on the “B” Block property has resulted in the discovery of wide spread gold-silver-zinc-copper mineralization. No mineral resource calculations have been done on the property. Drilling to date has been relatively wide spaced and shallow. All known mineralized intercepts lie within 400 metres of surface. Less than 5% of the drilling on the property has been done below the 400 metre below surface level.

The property is positioned in the eastern portion of the developing Rainy River district. The south edge of the property is located approximately 350 metres north of the near surface position of the Intrepid shoot, located on ground controlled by New Gold. The Intrepid shoot is a SW plunging, robust zone of gold-silver mineralization that has been jointly delineated by Bayfield Ventures and Rainy River Resources since its discovery by Bayfield in December 2011.

Mineralization on the “B” Block is contained within a package of NNE striking, vertically dipping, strongly foliated, sheared and locally folded dacite porphyry wall rocks. Pervasive sericite-silica +/- biotite alteration is developed within the dacite package. Sericite is dominant in the southern half of the property while biotite and silica are well developed in the northern portion.

The interlayered dacite porphyry, argillite and mafic volcanic lithology of the known rock package at the “B” Block are very similar to that found by Bayfield at its nearby Burns Block property. Additionally, discovered gold-silver-base metal mineralization at the “B” Block is hosted within highly foliated dacite intrusive and or volcanic rocks, again, a setting very similar to that at the Burns Block and at other well mineralized zones along the developing district-scale trend.

The drilling of a series of NW trending angle holes across the SW flank of the strong VTEM anomaly in the northern portion of the “B” Block property is also recommended. Drilling in the heart of the anomaly completed in 2013 showed a rock sequence nearly identical that which overlies the Intrepid Shoot in the eastern portion of Bayfield’s Burns Block project.

The survey was flown in two distinct blocks, an eastern block covering the Burns and “B” Block exploration areas and a western block covering the large “C” Block exploration area. Interpretation of the preliminary data is complete and the following drill targets have been identified:

• A strong, discrete conductor in the east-central portion of the Burns Block has been identified and will be drill tested. No previous drilling has been done in this portion of the property. The anomaly is located in the same area as the multi gram surface samples reported above.

• A strong, discrete conductor in the northeast portion of the “B” Block has been identified and will be drill tested. No previous drilling has been done in this portion of the “B” Block property.

• The cesium magnetic data from the “C” Block survey show clear evidence of mafic volcanic rocks in the northern portion of the property. These rocks are separated from interpreted intermediate volcanic rocks by a sharp contact that is very likely a fault. The interpreted fault contact and the area of interpreted intermediate volcanic (dacite or equivalent) rocks present top quality drill targets at the “C” Block. Drill testing of this area is planned for the first quarter.


Deep induced polarization and magnetic surveys in Morocco

Posted by on Wednesday, 28 September, 2011

Maya Gold & Silver Inc. announces the signing of a services contract with Geofisica TMC S.A. (“Geofisica”) for a deep induced polarization and magnetic surveys. The survey is planned to cover specific areas of the Permit 233263 (approximately 60 linear kilometres) following recommendations by Collison and Associates Geoscience Consulting.

The Permit 233263 is located in an important mining district in the eastern Anti-Atlas in Morocco which includes the World Class Imiter Silver Mine, the 10th largest silver mine in the world which has produced in excess of 10 million ounces of silver per year for more than a decade.

The due diligence report presented by Collison and Associates to the Development Committee of Maya on February 14, 2011 with regards to the Permit contained the following observations:

A number of clearly positive features are present on the property:

  • The close proximity to a world class deposit
  • The variety of mineralization types found on the property
  • The orientations of many mineralized structures are consistent with the main Imiter structures;
  • The presence of continuous and fairly wide breccias zones which point to intense hydrothermal events
  • Low level of exploration
  • Similar mineralized structures immediately south of IMITER Silver Mine

The surveys will greatly aid in the interpretation of the subsurface geology and may lead to the discovery of other breccias zones. The geophysical program will also aid the technical team in determining the relationship between the Pb-Zn-Ag-Au target and Precambrian sedimentary sequences.

Field crews have been mobilized to continue with field mapping and sampling programs, to be carried out simultaneously with the geophysical survey, which together will help the Company to define drill targets.

The geophysical survey program is expected to be completed within the next month. A Phase I diamond drill program on the Permit 233263 will commence once the geophysical program is complete.

To view the IP Grid of the Permit 233263 please visit the following link: http://www.mayagoldsilver.com/visual/IP_Grid_Permit_233263.pdf

To view the photo associated with this press release, please visit the following link:http://www.mayagoldsilver.com/visual/Geophysic_Picture_Permit_233263.pdf

The property

The property is underlain by Precambrian sedimentary sequences mainly sandstones and siltstones affected by a NE-SW schistosity. Pb-Zn-Ag-Au mineralization is hosted in a silicified/hematized brecciated zone that can be followed for more than 700 metres. The zone varies in width from 1-2 meter(s) locally up to 10 meters.


Airborne geophysics over the Symphony Property

Posted by on Thursday, 22 September, 2011

BonTerra Resources Inc. Fugro Airborne Surveys has commenced an aeroelectromagnetic survey over the entire Symphony Property (the “Property”). The Property is situated in the Omineca mining division approximately 29 kilometres southwest of Houston, British Columbia.  BonTerra recently staked additional claims to consolidate its land position situated in between the Silver Queen Mine to the south and the Silver Streak property to the north.

Directly bordering the Property to the south is the past producing Silver Queen Mine. Historical ore grades are 8.72 opt (299 grams / tonne) silver, 0.18 opt (6.17 g/t) gold, 6.73% zinc, 1.16% lead, and 0.47% copper.

The Silver Queen property is currently being advanced by New Nadina Explorations. New Nadina has intersected silver, gold and base metal mineralization on the property. They have completed an aeromagnetic and ZTEM survey, a titan geophysical survey and diamond drilling. Drilling revealed grades of up to 493.5 g/t silver, 5.06 g/t gold, 13.5% zinc, 6% lead and 2.88% copper. The mineralized trend has a general southeast to northwest trend, the direction towards which the Property is situated.

General Location Map:

http://www.bonterraresources.com/i/pdf/SymphLocationMap.pdf

The Silver Streak property is situated to the north of the Property. Trenching on the Silver Streak identified significant mineralization which included 1.99% Cu and 338 g/t Ag over 33 meters. An inclined diamond drill hole was drilled underneath this trench in 1991. A zone grading 8.8 meters of 0.49% copper and 258 g/t silver, within 21.1 meters averaging 0.27% copper and 127 g/t silver was discovered. Another trench excavated in 2002 graded 0.26% copper and 1.91 g/t Ag over 16.7 meters. The mineralized zone is believed to have a NW-SE strike, the general direction of the Property.

This DIGHEM Electromagnetic survey with optional Radiometrics will total 308 line kilometres of readings. DIGHEM records electromagnetic data which can be interpreted to show changes in bedrock geology to great depth. The system uses multiple frequency electromagnetic fields to measure and map electrical conductivity in three dimensions. The DIGHEM EM system provides the interpretation benefits that can only be realized by a system employing both horizontal coplanar and vertical coaxial transmitter-receiver coil-pairs. BonTerra has selected Fugro’s optional Radiometrics application for an effective geological mapping solution as part of this mineral exploration program. The Company plans on using this survey to identify additional targets of interest on the property in its evaluation for silver and base metal mineralization potential on the Property.


Geophysics for copper and zinc in Portugal

Posted by on Saturday, 26 February, 2011

Avrupa Minerals Ltd. reports on work progress in Portugal for the past seven months, since its inception in July 2010. Avrupa is advancing its prospects in Portugal towards JV-ready status. The following is a detailed summary of the project highlights. A similar update for the Kosovo exploration program will be released soon.

Avrupa’s exploration program is currently focused in the Portuguese portion of the Iberian Pyrite Belt, a district with over 2000 years of mining history from at least Roman times. Avrupa controls a large land position of approximately 1375 square kilometers in the northern part of the Pyrite Belt where the least amount of systematic exploration for copper- and zinc-bearing massive sulfide deposits has occurred. Avrupa is now drilling in the Serrinha District on its Marateca license.

The Company is also compiling, reviewing, and re-processing a large amount of data generated by previous explorers in the Lousal-Caveira District, which is covered by three contiguous properties: AlvaladeCanal Caveira, and Ferreira do Alentejo.

Avrupa controls a small, but relatively high grade tungsten deposit (Covas) in northern Portugal, and is actively advancing the property with a goal of finding a suitable joint venture partner to bring the project to the next level.

The Company is also actively exploring in other parts of the country, using its experience-amassed database to review old prospects and districts from new angles and to develop wholly new generative ideas.

Marateca (Iberian Pyrite Belt, southern Portugal)

Avrupa initiated a three-hole scout drilling program to test for the possibility of a Neves Corvo-style massive sulfide system in the Serrinha District at the northern end of the Portuguese Pyrite Belt. Two of the holes will target classic massive sulfide mineralization based on interpretation of gravity, reflection seismic, and IP-Resistivity geophysical data. The third target is based more on the surface presence of exhalitive-style mineralization and alteration, anomalous soil geochemistry (Cu, Pb, Zn, Ag, As, Sb, Ba, Mn, Hg), and a broad subsurface IP chargeability anomaly that may indicate the possibility of stockwork or VMS feeder-zone mineralization. The first pass exploratory drilling has been designed to better understand the targets and to add to our total knowledge of the target area, making the project even more attractive to potential joint venture partners. Avrupa plans to drill approximately 1300 meters to test the Serrinha target area.

Avrupa has, with assistance from LNEG, identified nine other areas of interest within the boundaries of the 375 square kilometer Marateca license. One of the targets, located about 6½ kilometers south of Serrinha, is a strong gravity anomaly that is also drill-ready. The other prospect areas, at varying levels of exploration status, are based on gravity anomalies, favorable geology and structure, and in one case, soil geochemistry surrounding veins containing copper and zinc mineralization. Plans for this work will be developed after completion of the Serrinha drilling and review of the results from the three diamond drill holes.

Canal Caveira / Lousal-Alvalde / Ferreira do Alentejo block (Iberian Pyrite Belt, southern Portugal)

Avrupa holds the exploration rights to 1000 square kilometers in three contiguous licenses located between the Marateca license and the operating Aljustrel Zn-Cu-Fe Mine. The properties cover a number of areas of mineralization and formerly working mines, including the Lousal and Caveira Mines. Avrupa is currently working on compilation and re-interpretation of historic geophysical, geological, and geochemical data for the Lousal-Caveira district and has identified several untested targets.

Avrupa has also contracted US-based Gradient Geophysics to re-process old airborne geophysical data purchased from LNEG. The magnetic and gravity data was originally collected in the 1980′s and 1990′s by previous operators in the northern Pyrite Belt. With more recent technology and a better knowledge of the district, we plan to enhance the targeting of potentially anomalous areas in the project area. Gravity surveys have been a key prospecting tool in the Pyrite Belt of both Portugal and Spain. Expected completion of this work is at the end of February.

Avrupa geologists have re-logged and sampled 25 old drill holes from the district. General observations include: a) most of the holes were never sampled; b) some of the holes that contain stockwork sulfide mineralization were not sampled; c) several of the holes contained thin layers of massive iron-copper-zinc sulfide mineralization, and these were not sampled; d) most of the holes bottomed in rock units that typically lie stratigraphically above the potentially mineralized horizons; and e) the bottoms of these holes were not sampled. Complete analytical results from approximately 550 samples, including those for gold, base metals, platinum group metals, REE’s, and standard multi-element packages are in process at the ALS Chemex laboratory in Vancouver, Canada. Whole rock analyses, used for determining alteration trends, are also in process at ALS Chemex. This data will be used to upgrade and expand previous drill targeting work for the district.

The Company has used its regional knowledge and the records of widespread previous drilling in over 100 locations on the properties to construct maps for the depth to basement rocks and the inferred geology of the basement rocks of the Lousal-Caveira District. This work has lead to a better understanding of the regional subsurface structure, the location of potential basins where massive sulfide mineralization is more likely to exist, and emphasis of the fact that there are probably three belts with potential for mineralization passing through the license block, rather than the previously-understood two belts.

The next step will be to review and enhance the surface geological mapping, with the intent to further upgrade and prioritize already-developed drill targets, as well as generate new target areas. Avrupa is actively engaged in the identification of possible Option/JV partnerships which will be most beneficial to moving through drilling phase in the Lousal-Caveira District.

Covas Tungsten (northwest corner of Portugal)

The Covas tungsten deposit is a ring of tungsten-bearing pyrrhotite skarns that surrounds a 3 kilometer by 2 kilometer presumed buried multiple-intrusion complex, called the Covas Dome. Previous operators drilled nearly 27,000 meters in 329 drill holes, and Union Carbide, the last major explorer in the district, developed a non 43-101 compliant historic resource of 1 million metric tonnes @ 0.7% WO3 at Covas1. Despite the large amount of drilling, the skarn ring has only been about 40% explored, and only cursory work has been completed in the Dome area.

The Avrupa field team completed a 300-sample, 25 line-kilometer soil grid over the entire Covas Dome area in late 2010. This work was directed towards assessing the potential of discovery of a larger, bulk-tonnage type of tungsten deposit. Geochemical results have now been received and are currently under comprehensive review by means of a thorough factor analysis and correlation study. Final results are expected before the end of February.

Avrupa commissioned a review and re-processing of a grid magnetometry study completed over the entire deposit area in 2007-09 by MAEPA. This review is being directed towards discovery of further tungsten-bearing pyrrhotite skarn mineralization, and is being performed by Gradient Geophysics. Final results of both the geophysical and the geochemistry work will be compiled together and reported in a subsequent news release by the company.

The European Commission has recently concluded that tungsten is one of 14 critical natural resources needed for the continued economic viability of the European Union. Further work and upgrade of the Covas deposit may potentially provide a new European source of this critical metal. To this end, Avrupa is actively engaged in the identification of a suitable joint venture partner to move the project to the next level of development.

Exploration and prospect generation (Countrywide)

Given Avrupa’s long experience in Portugal through MAEPA, new ideas and prospect generation are also an important part of exploration in the country. Avrupa’s team has identified a district in southern Portugal where previous stream sediment sampling has produced significant clusters of copper and zinc anomalies around the margins of a known intrusive body. Avrupa applied for an exploration license of approximately 2,700 square kilometers, covering the anomalous region. The Company is now waiting for potential issuance of the permit, which may be expected in 3-4 months, according to the Mining Bureau.

Avrupa has also applied for a 28.4-km2 license area covering intrusion-related gold targets in northern Portugal. After the government review, the license may be issued by the 4th quarter of 2011. The Company continues to actively pursue other possibilities around the country.

Avrupa Minerals Ltd. is a growth-oriented junior exploration and development company focused on aggressive exploration, using a prospect generator model, for valuable mineral deposits in politically stable and prospective regions of Europe, including Portugal and Kosovo.

Avrupa has an exciting portfolio of exploration projects consisting of:

  • Copper and Zinc in Portugal at Marateca, Alvalade, Canal Caveira, and Ferreira do Alentejo in the Iberian Pyrite Belt, where Europe’s richest active copper mine is located;
  • Tungsten in Portugal at the Covas prospect;
  • Silver, Lead and Zinc in Kosovo at the Glavej, Kamenica, and Bajgora properties in the Trepça Mineral Belt of the Vardar Zone, historically, Europe’s most productive district for lead and zinc;
  • Copper in Kosovo at the Rezhanc property in the Macedonian porphyry belt.

Airborne Geophysical Survey at the Brabant Lake Zinc Project

Posted by on Thursday, 6 January, 2011

Manicouagan Minerals Inc.  has contracted with Geotech Ltd. of Aurora, Ontario to fly a 560 line kilometre helicopter borne VTEM PLUS survey over its 100% owned Brabant Lake Properties located in north central Saskatchewan, 175 kilometres north of the town of La Ronge. The survey is expected to commence before the end of January.

The detailed airborne VTEM PLUS (Versatile Time Domain Electro Magnetic) geophysical survey utilizing 100 metre line spacing will cover the entire land package of 28 square kilometres that includes the Brabant Lake Zinc deposit. In 2010 the land position was expanded, by staking to cover approximately 15 km of the favourable horizon which hosts the Brabant Lake Zinc deposit.

Based on a search of the assessment work files it is believed that this will be the first airborne survey flown over the Brabant Lake area since the late 1960′s.

The purpose of this program is to identify electro magnetic anomalies along the favourable horizon which could indicate the presence of sulphide mineralization that would warrant follow-up investigation.

President and CEO said, “We believe that this comprehensive and systematic VTEM PLUS survey will be an excellent tool to demonstrate the exploration potential of the Brabant Lake Zinc deposit and the additional claims that we have added.”

Mineralization

Mineralization occurs in two main zones referred to as the Upper and Lower zones. The zones strike northeast (grid north) and dip moderately to the northwest. They are typically less than 10 metres in thickness and are sub-parallel. Drilling on the property has focused on the Lower Zone, which is on average almost twice the grade of and 50% thicker than the Upper Zone.


The new life of 5 years old 3D IP survey

Posted by on Thursday, 16 December, 2010

New Nadina Explorations summarizes current exploration activities at it’s 100% owned Silver Queen Property located 43 km south of Houston BC. Reference to the program can be obtained from the disseminated MD&A Report dated July 30, 2010.

2010 Drill Program – Summary

Drilling totalling 4109.5 metres was conducted on six areas of the property during September and October of 2010. These areas, designated the IP Anomaly, Drainage Ditch, Camp North, Cole North, Swamp and NG-3 were described in a MD&A dated July 30, 2010.

IP Anomaly:

A 3D IP survey was conducted over an area of the property in 2004 and was followed up in 2005 by drilling of DDH 05S-01 to a depth of 310 metres. This hole encountered heavy disseminated pyrite through most of its length but did not encounter any significant structures or values. A re-interpretation of the geophysical data in 2010 indicated the need for a drill hole approximately 150 metres to the southwest of the location drilled in 2005. DDH 10S-01, drilled NQ2 sized core to a depth of 269 metres, was the first hole of the 2010 program and encountered a silica-pyrite stockwork from 44 metres to 169 metres containing minor amounts of gold, where sampled. The boundaries of the stockwork are gradational, with a gradual decrease in the intensity of veining away from the main body of stockwork such that only isolated silica-pyrite veinlets are encountered at the top and bottom of the hole. The main stockwork coincides with a post-mineral feldspar porphyry dyke swarm, with core length of individual dyke intersections being 0.3 to 9.3 metres. Aside from size, the silica-pyrite veinlets comprising the stockwork are very similar in appearance to the gold-bearing silica-pyrite sections of the No. 3 Vein. These results are encouraging as being indicative of porphyry-style mineralization.

The Silver Queen property is located south of Houston, BC, on the forest service road to the Huckleberry Mine in the Omineca Mining Division.

The property has been the focus of many exploration and development programs since its initial discovery in 1912.


IP survey on silver property in Nevada

Posted by on Monday, 8 November, 2010

La Quinta Resources Corporation announces that it has engaged SJ Geophsiycs of Delta, BC to conduct an electrical geophysical survey at its BlackJack silver property located in Elko County, Nevada. The survey will consist of approximately 22,600 lineal feet (7 km) using pole-dipole time domain induced polarization technique. Historic data shows that reconnaissance sampling of outcropping veins and underground workings conducted in 2007 returned significant lead, silver, zinc, gold and copper values associated with polymetallic sulfides hosted in veins within Ordovician limestones. The survey lines are situated over and flanking the historic workings on the property. The IP technique is anticipated to be useful for delineating hidden veins and replacement style massive sulfide lead-silver mineralization in unexplored regions below and distal to the historic underground workings.

The property, containing sediment-hosted high-grade lead-silver-zinc veins approximately 50 air-miles north of Elko and 12 miles west – northwest of the Jerrit Canyon Mine. The property consists of five lode mining claims (~100 ac). A total of approximately 1,200 ft of drifts and stopes have been developed along one level only. The old airtram and rails are still in the main drift. No detailed sampling has been done on the property in modern times.

The host rock is brecciated dolomitic limestone of the Ordovician Porter Peak carbonate sequence. A porphyritic dacite dike intersected in the underground workings is approximately 20 ft wide and has been completely argillized where exposed. Mineralization consists of a mass of carbonate-quartz veins exhibiting both coarse stockwork and sheeted characteristics with oxidized galena and sphalerite. In reconnaissance level sampling, metal values ranged from 3 – 90 oz/ton silver, 0.001 – 0.068 oz/ton gold and 0.8 – 37 % lead along more than 3,500 ft aggregate strike at surface and in underground workings. The veins individually range from 1ft – 20ft wide. These veins also contain anomalous amounts of bismuth, antimony, cadmium, copper and tungsten in addition to the silver, lead, zinc and gold.


Strait Gold Identifies Depth Potential at Alicia With Geophysics

Posted by on Monday, 13 September, 2010

Strait Gold Corp. is pleased to report that ground geophysical surveys on its Alicia copper-gold property in Peru have outlined several induced polarization (IP) anomalies, the largest and strongest of which is associated with surface outcrops (Zones 7 and 8) that returned 31.7 metres of 0.5% copper and 0.07 grams per tonne (g/t) and 20.0 metres of 4.9% copper and 0.42 g/t gold, respectively, from historical trenching.

Six induced polarization (IP) anomalies were detected, the largest of which is estimated to begin approximately 200 metres down dip from Zones 7 and 8. While the surface mineralization on these zones is primarily in the form of copper oxides, the chargeability anomaly detected by the IP survey may indicate a transition to sulphide mineralization.

“The results of the IP survey suggest that copper mineralization continues at depth,” said Strait Gold President Jim Borland. “When drilling commences later this month, this anomaly will be one of our primary targets.”

A total of 16.8 km of IP and magnetic surveys were completed by Fugro Ground Geophysics of Lima, Peru. The IP anomaly underlying Zones 7 and 8 is coincident with a magnetic low, and defined by a strong ~ 24 mV/V chargeability anomaly, with approximately 1.4 kilometres of strike length and at least 450 metres of down-dip extent, with a steep northerly dip. (To view the chargeability data from the IP survey, click here:http://media3.marketwire.com/docs/srd0910fig1.pdf.)

Phase 1 of the Alicia exploration program included systematic surface mapping and sampling that confirmed significant values for copper, gold and silver, in addition to the recently completed geophysical surveys. Phase 2 will consist of drilling 1,000-1,200 metres to test for copper-gold mineralization at depth along the porphyry-limestone contact which includes Zones 7 and 8.

The Alicia Project is located within the prolific Andahuaylas-Yauri Belt, which stretches across much of southern Peru. This highly prospective belt hosts numerous porphyry and skarn deposits, including Xstrata’s Las Bambas deposit with indicated and inferred resources of 1.1 billion tonnes grading 0.77% copper, plus associated molybdenum and gold. Strait Gold can earn a 100% interest in the Alicia property under a three-year option agreement, subject to a 2% NSR royalty.


“Discovering tomorrow’s metals today”

Posted by on Wednesday, 16 June, 2010

Argentex discovers new silver-gold zone at Pinguino, Tranquilo Trend returns 6.40 meters of 486.6 g/t silver and 1.91 g/t gold!

Argentex Mining Corporation provides an update on ongoing diamond drilling and exploration activities at its wholly owned 10,000-hectare Pinguino property in the silver-gold district of Santa Cruz, Patagonia, Argentina.

As part of the ongoing drill program at Pinguino, Argentex drill tested structures that lay along the Tranquilo Trend, a major northwest regional feature crosscutting the Pinguino property. Within it, Argentex has discovered a completely new mineralized structure (Luna vein) containing wide intervals of high-grade silver mineralization with associated gold values. The new mineralized structure returned results including 6.40 meters of 486.6 grams per tonne (g/t) silver and 1.91 grams per tonne (g/t) gold.

The Luna vein is known to extend for 920 meters along strike and is currently the subject of follow-up drilling with the goal of defining and expanding the high-grade mineralization. Drilling also tested structures along the Marta Trend, which contains the high-grade silver Marta Norte vein.

“We are excited to have discovered mineralization in the very first holes drilled into the Tranquilo Trend, which crosscuts 11 kilometers of the Pinguino property.  Not only is the structure mineralized along a considerable length, it also contains wide intervals of high-grade silver-gold mineralization such as we have intersected in the Luna vein,” said Ken Hicks, President of Argentex.  “The Luna discovery is a great incentive to increase our exploration efforts in interpreting the local geology and targeting high-grade silver-gold mineralization along the Tranquilo Trend.  We expect that this new discovery within a major property-scale structure could provide a significant boost to Pinguino’s overall precious metal potential.”

With more than 74 line kilometers of veins discovered to date, the Pinguino property is host to the largest known undeveloped vein system in Santa Cruz province after the developed AngloGold Ashanti Cerro Vanguardia mine. Both vein systems fall within the Tranquilo regional fault, a major northwest structural corridor in central Santa Cruz. To date, Argentex has drilled 333 holes at Pinguino for a total of 33,559 meters.


Wildcat’s EM targets are drilled

Posted by on Monday, 11 January, 2010

The Wildcat project is located 90 kilometres west of Watson Lake, in the Rancheria District of southern Yukon, Canada.  1,940 hectares in size (19.4 sq km), widespread silver-lead-zinc mineralization occurs across the property. Mineralization on the Wildcat was discovered in the early 1940s where early work focussed on a series of narrow, high-grade argentiferous galena veins and fracture filings, hosted primarily within dolomite and limestone.  More recent work, including diamond drilling in the mid 1980s, was directed at the ‘Main Zone’, a zone of manto-style silver-lead-zinc mineralization.

From 1983 – 85 most work tested a large gossan zone in the central part of the property (the Main Zone). Butler Mountain Minerals completed a Pulse EM survey over the gossan zone and identified a strong, 600 meter long, north-northeast trending conductor. From 1983-85, 35 diamond drill holes were drilled, the majority of which tested this target. Drilling successfully intersected multiple zones of massive pyrrhotite-sphalerite mineralization, with results including 12 feet grading 6.2% Zn, 1.09 oz/t Ag and 0.32% Pb (ddh 83-3), 7 feet grading 5.06% Zn and 9.86 oz/t Ag (ddh 83-6), and 10 feet grading 11.58% Zn, 1.05 oz/t Ag and 0.7 % Pb (ddh 85-10).

During 2008, Killdeer Minerals Inc. completed a horizontal loop electromagnetic (HLEM) survey over the central portion of the Wildcat property. The purpose of the survey was to confirm, re-locate and better define the EM conductor at the Main Zone, as a guide to subsequent drilling, and to test for other conductors elsewhere on the property.

Seven HLEM conductors were identified by the Killdeer Minerals’ 2008 survey. Two of these anomalies are high priorities for follow-up, anomaly H-A (the Main Zone anomaly) and anomaly H-F (1 kilometer to the northwest of H-A) on the lower east flank of Little Guy Hill.

The Main Zone HLEM anomaly is a 1200 meter long, complex north-northeast trending conductor, which is coincident with Pulse EM and VLF-EM conductors identified by previous surveys and with a significant positive magnetic field response. Based on the geophysical response, two styles of mineralization are interpreted, a north-northeast trending, steeply west-dipping mineralized fault zone and, east of this, moderate east-dipping conformable sulfide mineralization, on the east flank of an anticlinal structure. The associated positive magnetic field response results from the pyrrhotite-dominant mineralization. While the fault-controlled mineralization is well tested by previous drilling, drilling has been poorly oriented to test for east-dipping mineralization east of the fault. This is a high priority for follow-up drilling. The other high-priority target for follow-up drill testing is a 200 meter long, north-northeast trending HLEM conductor, also with an associated positive magnetic response, located 1 kilometer to the northwest of the Main Zone in an area of widespread manganese gossan and elevated soil geochemistry.

One of the 2009 drill holes tested a HLEM conductor related to a distinct tectonic zone situated approximately 900 metres east from the Main Zone. At shallow depth the hole intersected a very strongly leached, stratabound zone of limonite-hematite mineralization enriched in base metals related to paleo-karst settings. The hole did not reach target depth and due to technical problems was prematurely terminated in a fault zone enriched in gold related to pyrite-chalcedony mineralization.
Additional geological mapping, soil sampling and electromagnetic surveys are required to identify other geological settings favorable for occurrence of manto-style mineralization of
better integrity prior to further drilling of the Wildcat property.