Occurrence Details


Occurrence Number:
105I 067
Occurrence Name:
Hc Deposits
Occurrence Type:
Hard-rock
Status:
Deposit
Date printed:
8/19/2022 10:02:53 AM

Print Options


General Information
Capsule
Work History
Assessment Reports
References
Resource / Reserve

General Information

Primary Commodities: lead, zinc
Aliases: Howards Pass, Selwyn Project
Deposit Type(s): Sediment hosted Sedimentary Exhalative Zn-Pb-Ag (Sedex)
Location(s): 62°31'0" N - -129°22'11" W
NTS Mapsheet(s): 105I11
Location Comments: .5 Kilometres
Hand Samples Available: No
Last Reviewed:

Capsule

Work History

Canex Placer Ltd, a wholly owned subsidiary of Placer Development Ltd, carried out extensive regional reconnaissance and grid geochemical and geological mapping programs in the Howard’s Pass area in 1968, 1971 and 1972 before discovering lead-zinc mineralization on the adjoining X claims (to the east). The company staked Don cl 1-8 (Y64845), cl 10-135 (Y64911) and cl 136-164 (Y70201) between September and Oct/72. The claims became part of the company’s larger Howard’s Pass property. The announcement of widespread mineralization on the Howard’s Pass property prompted a staking rush and the recording of some 4,400 claims by various other companies from Oct/1972 to Apr/1973.

Canex Placer conducted limited bulldozer trenching and sampling in late 1972, built a winter road, an airstrip and extensive tote roads on the Howard’s Pass property, and carried out extensive trenching, mapping, grid soil sampling, test geophysical work and claim surveys and drilled 26 diamond drill holes (4,267.2 m) in 1973, and 12 holes (1,981.2 m) in 1974. Based on historical records it appears none of drilling tested the area around the HC occurrences (deposits).

In 1975, Canex entered a joint venture with Essex Minerals Company (a wholly owned subsidiary of U.S. Steel Corporation). The joint venture continued exploring the Howard’s Pass property with diamond drilling, road building, camp construction and underground mining through the late 1970s and early 1980s. Essex's Minerals interest in the property was transferred to Cygnus Mines Ltd in Apr/1982.

Placer Development and Cygnus Mines completed an economic analysis of the Howard’s Pass property at the end of 1982. The study concluded that mining the various deposits identified on the property was not economically viable at that time. No reserves were identified at this occurrence. Placer Development Ltd was amalgamated into Placer Dome Inc in Aug/87. Placer Dome performed cleanup work on the Howard’s Pass property in 1991.

In Oct/94 W4 Joint Venture restaked the occurrences within Nod cl 1-66 (YB49365). In Dec/95 the claims were sold to NDU Resources Ltd which merged with United Keno Hill Mines Ltd in Mar/98. Expatriate Resources Ltd purchased the claims from United Keno in the fall of 1998. Expatriate carried out soil and silt sampling programs in 1999 and prospecting and additional soil sampling in 2004. In Nov/94 Expatriate Resources re-organized, with the company's Finlayson Lake properties being spun off to a new company; Yukon Zinc Corporation and the Nod claims and all other non-Finlayson Lake claims being transferred to a new company called Pacifica Resources Ltd.

In May/2005 Pacifica Resources Ltd entered into a Letter of Intent to purchase a 100% interest in the Howard's Pass property for the sum of $10,000,000 spread over 7 years and a commitment to spend a minimum of $3,500,000 in exploration expenditures. The agreement was signed between Pacifica and Placer Dome (CLA) a wholly owned subsidiary of Placer Dome Inc (51% owner) and Cygnus Mines Ltd (49% owner). The agreement was formally approved in Aug/2005 and the Nod claims (this occurrence) were added to the project.

In 2005 Pacifica carried out an extensive regional exploration program on the Howard's Pass project which included geological mapping, geochemical sampling, camp construction and metallurgical testing. The company also collared 53 diamond drill holes (8,286.9 m) on the property. None of the holes targeted these occurrences.

In Mar/2006 Barrick Gold Corporation acquired Placer Dome Inc. In May 2006 Barrick sold Placer Dome's 51% interest and other mines and exploration properties to Goldcorp Inc. In Jul/2006 Goldcorp sold Placer Dome's 51% interest in the Howard's Pass property to Terrane Metals Corp. During 2006 Pacifica completed 191 diamond drill holes (131,550.2 m) on the property with fifteen holes testing the HC West zone (occurrence A) and sixteen holes testing the HC zone (occurrence B). The company did not break down footage drilled by individual zone.

In Jan/2007 Pacifica released a preliminary assessment report for the development of the larger Howard's Pass project. The assessment indicates excellent potential for a long life mine, having large-scale, low cost zinc and lead production. The company used the results to help plan future exploration and engineering work.

On January 29, 2007 Pacifica Resources announced a plan of re-organization in which the Howard's Pass project would be spun off to a new company, Selwyn Resources Ltd and the company's remaining properties would be transferred to a new company Savant Exploration Ltd. Pacifica shareholders received shares in Savant Exploration as compensation for the transfer of assets from Pacifica to Savant. The agreement was approved on May 31, 2007 and completed on June 6, 2007 at which time control of the Howard's Pass property, commonly referred to as the Selwyn Project was transferred to Selwyn Resources and the charter of Pacifica Resources was cancelled.

In Apr/2007 Selwyn announced National Instrument 43-101 compliant mineral resource estimates for the newly designated HC deposits (Pearson and O'Donnell, April 2007). The company drilled 106 diamond drill holes (37,208.6 m) on the Howard’s Pass property in 2007. Fifteen holes (3,498.6 m) targeted the HC West deposit and one hole (819.6 m) targeted the HC deposit. The company continued environmental and engineering studies, opened a new camp in the Don Valley and closed the XY camp located approximately 3.5 km to the southeast.

In Jan/2008 the company released updated 43-101 compliant mineral resource estimates for the HC deposits based on the 2007 drill results (report dated March 14 2008, Pearson and O'Donnell). Selwyn completed 13 diamond drill holes (3,856.9 m) in 2008 and 10 diamond drill holes (4,214 m) in 2009. None of the holes targeted these occurrences.

In mid-2009 Selwyn opened discussions with various companies regarding the formation of a possible strategic partnership. In Dec/2009 Selwyn Resources announced that they had signed a binding Framework Agreement with Yunnan Chihong Zinc & Germanium Company Ltd (China), whereby both companies would form a joint venture company to hold all assets associated with the Selwyn project. In return for a 50% interest in the joint venture Yunnan Chihong deposited 100 million dollars in cash irrevocably to a bank account for the joint venture to use to fund development of the Selwyn project. As part of the agreement Yunnan Chihong agreed to fund all of Selwyn Resources direct costs incurred from July 1, 2009 on the Selwyn project.

On January 5, 2010 Selwyn Resources announced that they had engaged Wardrop Engineering Inc to start a Phase 1 work program leading to the completion of a National Instrument 43-101 compliant feasibility study on the Selwyn project. The company hopes to complete the study by the end of 2010.

On August 18, 2010 Selwyn announced the completion of the joint venture with Yunnan Chihong and the formation of a new company Selwyn Chihong Mining Ltd. Selwyn Resources transferred all Selwyn Project claims, equipment, permits and licenses to the new company. At the same time the joint management committee approved in principal a predevelopment budget of 89 million dollars for 2010 and 2011. The money will be directed to the advancement of permitting, completion of the feasibility study and related engineering and resource definition drilling from both surface and underground.

A September 2012 report by Kirkham Geosystems lists a global resource for the Selwyn Project, which includes the 2007-08 estimate for the HC deposits.


 Capsule Geology

The Selwyn project (Howard’s Pass project) is located in eastern Yukon and straddles the Northwest Territories border, approximately 350 km northeast of Whitehorse, Yukon and approximately 80 km north-northwest of the former mining town of Tungsten. Over ninety percent of the property lies in the Yukon. To date Selwyn Resources Ltd has identified 15 lead-zinc deposits over a strike length of 37.5 km.

The Selwyn Basin is a region of deep-water offshelf sedimentation that persisted from Late Precambrian to Middle Devonian time. Its basal deposits consist of late Precambrian rift (-) clastics; it is overlain by rift clastics of late Devonian age. On its north-eastern side are time-equivalent shallow shelf strata of Mackenzie Platform. Along its southwestern margin there developed in the Silurian to Devonian a carbonate-clastic shelf the Cassiar Platform. Its southwestern limit is essentially the limit of the miogeocline as presently preserved in the Yukon.

Geological mapping in the Howard’s Pass area has changed significantly since Pacifica/Selwyn Resources Ltd has acquired control of the entire area. Based on various reports released by the companies stratigraphy in the Howard’s Pass area can be summarized as follows. Regionally, Selwyn Basin stratigraphy overlies a basement of Upper Proterozoic to Lower Cambrian maroon to dark blue-grey weathering shale assigned to the Narchilla Formation of the Hyland Group. This unit is conformably overlain by the Upper Cambrian to Lower Ordovician Rabbitkettle Formation. The Rabbitkettle Formation is comprised of an Upper member consisting of grey weathering fine crystalline nodular limestone and a Lower member consisting of grey orange weathering, argillaceous to silty limestones usually limited to beds of less than 10 cm.

Pacifica/Selwyn Resources report the presence of a Transition Formation between the Rabbitkettle Formation and the overlying Duo Formation. This unit identified in drill core, consists of thin interlaminations of grey limestone and buff coloured shale, generally well cleaved.

The Transition Formation is overlain by the Ordovician to Middle Silurian Road River Group which is divided into the Duo Lake and Steel Formations. Various operators working in the area have locally renamed the Duo Formation the Howard’s Pass Formation and have subdivided it into various units. Currently Pacifica/Selwyn Resources have divided the Dou Formation into five member units measuring 300 m thick. The lowest member is a pyritic siliceous shale member, which is overlain by a calcareous mudstone member and a lower cherty mudstone member. These members are overlain by the Active member, a heterogeneous mudstone, limestone, chert that hosts the region’s abundant sulphide mineralization in lamella within a poorly preserved graptolite horizon. An upper siliceous mudstone member tops the formation. The Steel Formation which measures approximately 140 m thick and consisting of a flaggy mudstone containing orange weathered siliceous argillite in beds 10-80 cm thick overlies the Howard’s Pass Formation.
The Road River Group is overlain by the Lower to Upper Devonian Portrait Lake Formation of the Lower Earn Group. The Portrait Lake Formation is comprised of a Lower, Middle and Upper member. The Lower Member consists of a dark brown weathering, silty shale and shale in beds up to 420 m thick. The Middle member consists of a black weathering, massive pebble conglomerate up to 195 m thick and the Upper Member consists of a gun-blue weathering black platy siltstone up to 260 m thick.

The Portrait Lake Formation is overlain by the Upper Devonian to Middle Mississippian Prevost Formation of the Upper Earn Group. It also divided into Lower, Middle and Upper members. The Lower member consists of a grey weathering, dark grey, medium to coarse-grained chert-quartz sandstone up to 160 m thick. The Middle member consists of brown weathering, dark grey, thin bedded shale and siltstone measuring up to 90 m thick and an Upper member consisting of coarse-grained, poorly sorted, chert-quartz sandstone and conglomerate in beds up to 300 m thick. The entire sequence is intruded by various Middle to Late Cretaceous stocks and batholiths ranging in composition from intermediate to granitic assigned to the Selwyn plutonic suite.

Historical drilling and geological mapping carried out by Placer Development suggested that the XY and Anniv (Minfile Occurrences 105I 012 & 037) sedimentary-exhalative deposits occurred in separate sub-basins along the base of a paleo-slope of the eastern Selwyn Basin. New geological mapping and diamond drilling carried by Pacifica/Selwyn Resources indicates the lead-zinc mineralization hosted by the Selwyn project (Howard’s Pass property) was part of a long-lived, single mineralizing event. As proof of this theory the companies report that the sulphide textures, mineralogy and thickness are similar in each of the 15 deposits identified to date. The hydrothermal fluids that formed the different deposits are also isotopically identical throughout the property. The companies believe the strataform and tabular Active Member was affected by post-depositional structural deformation. At least two generations of brittle faults offset the tabular geometry of the Active Member within the Don Valley which likely accounts for the thickening and thinning of the Active Member across the property. Understanding the timing of the faults with respect to each other will aid future exploration programs in locating extensions of the known deposits and locating new resources.

Zinc and lead mineralization at the Selwyn project is hosted in the Active Member and consists of alternating layers of carbonaceous mudstone, limestone and chert, interlayered with stratobound laminated sulphide rich bands. The sulphides are fine grained and dominantly sphalerite and galena with minor pyrite. The mineralized horizon is generally 20 to 30 m thick and is texturally and mineralogically consistent throughout the property.

Ongoing metallurgical test work has confirmed that high-grade zinc and lead concentrate can be achieved. These concentrates have low levels of deleterious elements. Floatation test work indicates that a zinc concentrate grading 55 to 57% can be produced with an overall recovery of about 80% and a lead concentrate grading 65 to 70% lead with a recovery of approximately 70%. The ore will require fine grinding and floatation processing which will include the removal of carbon prior to producing high grade concentrates. Test work completed to date on the application of dense media separation indicates that simple gravity processing could provide an effective means of upgrading run-of-mine ores.

This occurrence consists of two deposits; the HC West (occurrence A) and the HC (occurrence B). It appears Canex Placer and others carried out a cursory examination of the area surrounding these deposits before allowing the Don claims to lapse. Expatriate Resources appears to have been the first company to carry out any substantial exploration work in the area. Soil sampling carried out in 1999 and 2004 outlined high zinc and elevated nickel and lead values in the vicinity of the HC West deposit. Although various exploration companies knew that the Active Member unit was mineralized it was difficult to raise funds in the 1990s and early 2000s for exploration in the Howard’s Pass area given its isolated location.

The formation of Pacifica Resources and the consolidation of the entire Howard’s Pass property into one property allowed for the systematic exploration of the property. In 2005 Pacifica carried out extensive soil sampling, geological mapping and prospecting programs over the area of the HC deposits which highlighted numerous potential drill targets. The company followed up this work with an extensive diamond drill program in 2006. The HC zone was discovered first; discovery hole Don-11 intersected 31 m of mineralized Active Member which returned 2.44% zinc and 0.61% lead. An additional 13 diamond drill holes intersected zinc-lead mineralization. The HC West zone was discovered later in the summer. Discovery hole Don-18 collared 2 km northwest of the HC zone intersected 10.6 m of mineralized Active Member which returned 5.19% zinc and 1.21% lead. Fourteen additional drill holes intersected this zone.

On Apr 2, 2007 Pacifica announced a initial 43-101 compliant mineral resource estimate for the HC West and HC zones (report dated April 30 2007, by  Pearson and O'Donnell). Given the calculation of reserves these zones were now considered deposits. The HC West deposit hosts an INDICATED mineral resource of 4,470,000 tonnes grading 4.36% zinc and 1.16% lead and a INFERRED mineral resource of 13,930,000 tonnes grading 4.98% zinc and 1.32% lead. The HC deposit hosts an INDICATED mineral resource of 8,600,000 tonnes grading 4.01% zinc and 1.04% lead and a INFERRED mineral resource of 33,020,000 tonnes grading 3.85% zinc and 1.07% lead (employing a 2% zinc grade cut-off).

The 2007 diamond drilling program on the HC West deposit was designed to increase reserves and test for a high grade mineralization (greater than 3% zinc) at depth. The holes intersected thicker and higher grade mineralization then previously encountered. The single diamond drill hole collared on the HC deposit intersected very narrow Active Member mineralization at depth thus limiting the down depth potential of this deposit. The poor results obtained from this hole and the existence of higher prioritized targets elsewhere on the property led the company to curtail further drilling on the HC deposit.

On Jan 29, 2008 (report dated March 14 2008, Pearson and O'Donnell) Selwyn Resources announced updated mineral resource estimates for the HC WEST and HC deposits. The INDICATED resource for the HC deposit remained unchanged from the 2007 report (8,600,000 tonnes grading 4.01% zinc and 1.04% lead ) but the INFERRED category was updated to 19.37M tonnes grading 3.83% Zn and 1.09% Pb, at a 2% Zn cut-off grade. The decrease in the Inferred mineral resource (approximately 13,650,000 tonnes) was attributed to the results of the single 2007 drill hole which intersected very narrow Active Member mineralization down dip thus reducing the available resource.

The HC WEST deposit hosts an indicated mineral resource of 19,680,000 tonnes grading 5.46% zinc and 1.56% lead and an inferred mineral resource of 10 220 000 tonnes grading 5.42% zinc and 1.5% lead (employing a 2% zinc grade cut-off). Included within this calculation was a high grade potential inferred underground mineral resource consisting of 2,996,000 tonnes grading 9.73% zinc and 3.00 % lead. This inferred resource was extracted to quantify the mineral resource available for a possible underground mine.

 Selwyn Resources reported in Apr/09 (the latest description available) that the HC West and HC deposits are located on the east end of the Don Valley. The HC West has a strike length of 1.5 km and an overall flat orientation of 094/20°. The western extent of the deposit is cut-off by a fault but the northeast extent of the deposit is open and further infill drilling is warranted. The resource has been defined by 21 drill holes and further expansion of the resource is expected to the southeast toward the HC deposit. The HC deposit is located 2 km southeast of the HC West deposit. It has a defined strike length of 1.8 km and an overall orientation of 098/46°. The east side of the deposit is controlled by a fault and the down dip extension is likely limited based on the single 2007 drill hole. The eastern edge of the deposit is interpreted as the right lateral offset of the Brodel deposit (Minfile Occurrence 105I 067, 3 km to southeast), with a displacement of 1.9 km. Fourteen drill holes define the resource for the deposit.

As of Sep/2010 the entire Howard’s Pass property (consisting of 15 individual deposits) hosts an indicated resource (using a 2% zinc cut-off) of 154,350,000 tonnes grading 5.35% zinc and 1.86% lead and an inferred resource of 234,150,000 tonnes grading 4.54% zinc and 1.41% lead.

A September 2012 report by Kirkham Geosystems lists a global resource for the Selwyn Project, which includes the 2007-08 estimate for the HC  and HC West deposits. At a 2% Zn cut-off grade, the Global INDICATED Mineral Resource for the Selwyn Project is calculated at 185,570,000 tonnes grading 5.2% Zn and 1.79% Pb for a contained total of 21.26B lbs(9.64B kg) Zn and 7.3Blbs (3.3B kg) Pb. The Global INFERRED resource is listed at 237,860,000 tonnes grading 4.47% Zn and 1.38% Pb for a contained total of 23.45B lbs(10.63B kg) Zn and 7.22Blbs (3.27B kg) Pb.

Work History

Date Work Type Comment
9/27/2012 Studies Kirkham Geosystems, Sept 27 2012.
4/30/2007 Studies Pearson and O'Donnell 2007. Initial mineral resource calculation for HC West and HC deposits. Resource still current for HC Indicated category as of March 2014.
12/31/2010 Studies Began feasability study for entire project.
12/31/2008 Studies Pearson and O'Donnell 2008. HC, HC West and HC West high grade deposit. Resource for HC West and HC Inferred category still current as of March 2014. See 2007 report for HC Indicated category.
12/31/2007 Drilling 16 holes, 4318.2 m
12/31/2006 Drilling 191 holes; 131,550.2 m
12/31/2005 Geology Entire Howard's Pass property was explored by Pacifica including the area around these occurrences.
12/31/2005 Geochemistry Entire Howard's Pass property was explored by Pacifica including the area around these occurrences.
12/31/2004 Geochemistry Carried out by Expatriate over occurrence area, part of larger program.
12/31/2004 Other Carried out by Expatriate over occurrence area, part of larger program.
12/31/1999 Geochemistry Carried out by Expatriate over occurrence area, part of larger program.
12/31/1999 Geochemistry Carried out by Expatriate over occurrence area, part of larger program.
12/31/1972 Geochemistry Canex Placer carried out large regional reconnaissance exploration programs over the entire property during their ownership period but this area only received a cursory examination.

Assessment Reports that overlap occurrence

Report Number Year Title Worktypes Holes Drilled Meters Drilled
095022 2007 Assessment Report Describing Prospecting, Geochemical Sampling and Diamond Drilling on the Selwyn Project Diamond Drilling, Rock Geochemistry, Silt Geochemistry, Soil Geochemistry, Prospecting Other 76 23291.20
094637 2006 Assessment Report Describing Prospecting, Geochemical Sampling and Diamond Drilling on the Selwyn Project Diamond Drilling, Rock Geochemistry, Soil Geochemistry, Bedrock Mapping Geology, Regional Surficial Mapping Geology 150 30994.70
094572 2004 Assessment Report Describing Prospecting and Soil Sampling on the NOD Claims Rock Geochemistry, Soil Geochemistry, Prospecting Other
094092 1999 Assessment Report Describing Geology and Geochemical Surveys on the Nod Claims Silt Geochemistry, Soil Geochemistry
093314 1994 Assessment Report Describing Geology and Geochemical Surveys on the Nod 1-66 Claims Silt Geochemistry
097005 1976 Final Report on the 1976 Exploration Program at Howards Pass, Yukon Access Road Development, Surface, Diamond Drilling, Soil Geochemistry, Bedrock Mapping Geology, EM Ground Geophysics, Gravity Survey Ground Geophysics, Surveying Other, Mechanical Trenching 70 9501.23
097007 1975 Final Report on the 1975 Exploration Program at Howards Pass, Yukon Air Strip Development, Surface, Diamond Drilling, Soil Geochemistry, Bedrock Mapping Geology, Prospecting Other, Mechanical Trenching 19 4013.45
061275 1973 Report on the Geology and Mineralization Summit Lake Area, Y.T.-N.W.T. Silt Geochemistry, Soil Geochemistry, Regional Bedrock Mapping Geology

Related References

Number Title Page(s) Reference Type Document Type
ARMC009055 Geological map - 105H-9 - MacMillan project - Anmac Property File Collection Geoscience Map (Geological - Bedrock)
094637 Assessment Report Describing Prospecting, Geochemical Sampling and Diamond Drilling on the Selwyn Project Yukon Government: Energy, Mines and Resources Assessment Report
094657 Assessment Report Describing Prospecting, Geochemical Sampling and Diamond Drilling on the Selwyn Project Property Yukon Government: Energy, Mines and Resources Assessment Report
094092 Assessment Report Describing Geology and Geochemical Surveys on the Nod Claims Yukon Government: Energy, Mines and Resources Assessment Report
094572 Assessment Report Describing Prospecting and Soil Sampling on the NOD Claims Yukon Government: Energy, Mines and Resources Assessment Report

Resource/Reserve

Year Zone Type Commodity Grade Tonnage Amount Reported Amount 43-101 Compliant Cut-off
2012 Selwyn Global Resource (Open Pit & Underground) Indicated zinc 5.2 % 185,570,000 9643373786 Yes Yes 2% Zn
Kirkham Geosystems, Sept 27 2012.
2012 Selwyn Global Resource (Open Pit & Underground) Indicated lead 1.79 % 185,570,000 3311224301 Yes Yes 2% Zn
Kirkham Geosystems, Sept 27 2012.
2012 Selwyn Global Resource (Open Pit & Underground) Inferred zinc 4.47 % 237,860,000 10636741076 Yes Yes 2% Zn
Kirkham Geosystems, Sept 27 2012.
2012 Selwyn Global Resource (Open Pit & Underground) Inferred lead 1.38 % 237,860,000 3274936911 Yes Yes 2% Zn
Kirkham Geosystems, Sept 27 2012.
2008 HC DEPOSIT (OPEN PIT) Inferred zinc 3.83 % 19,370,000 739355563 Yes Yes 2% Zn
Pearson and O'Donnell, March 2008.
2008 HC DEPOSIT (OPEN PIT) Indicated zinc 4.01 % 8,600,000 344730201 Yes Unknown 2% Zn
Originally in Pearson and O'Donnell, April 2007, bur re-sated in March 2008.
2008 HC WEST - HIGH GRADE CORE (UNDERGROUND) Inferred zinc 9.73 % 2,996,000 No Unknown Unknown
Prepared by J.J. O'Donnel onsite Qualified person for Selwyn and C. Pearson, Pearson Geological, Independent Qualified Person. Also available on Sedar.; Selwyn Resources prepared resource calculation of higher grade core of HC West deposit. Potential underground mining resource. Part of overall resource for HC West deposit. Based on 2% zinc cut-off.
2008 HC WEST DEPOSIT (OPEN PIT) Inferred zinc 5.42 % 10,220,000 Yes Yes 2% Zn
Pearson and O'Donnell, March 2008.
2008 HC WEST DEPOSIT (OPEN PIT) Indicated zinc 5.46 % 19,680,000 1075013917 Yes Yes 2% Zn
Pearson and O'Donnell, March 2008.
2008 HC WEST - HIGH GRADE CORE (UNDERGROUND) Inferred lead 3 % 2,996,000 No Unknown Unknown
Prepared by J.J. O'Donnel onsite Qualified person for Selwyn and C. Pearson, Pearson Geological, Independent Qualified Person. Also available on Sedar.; Selwyn Resources prepared resource calculation of higher grade core of HC West deposit. Potential underground mining resource. Part of overall resource for HC West deposit. Based on 2% zinc cut-off.
2008 HC DEPOSIT (OPEN PIT) Inferred lead 1.09 % 19,370,000 208652490 Yes Yes 2% Zn
Pearson and O'Donnell 2008.
2008 HC DEPOSIT (OPEN PIT) Indicated lead 1.04 % 8,600,000 90718474 Yes Yes 2% Zn
Pearson and O'Donnell, April 2007. Re-stated in Pearson and O'Donnell 2008.
2008 HC WEST DEPOSIT (OPEN PIT) Inferred lead 1.5 % 10,220,000 154221405 Yes Yes 2% Zn
Pearson and O'Donnell, March 2008.
2008 HC WEST DEPOSIT (OPEN PIT) Indicated lead 1.56 % 19,680,000 308442811 Yes Yes 2%Zn
Pearson and O'Donnell, March 2008.
2007 HC DEPOSIT (OPEN PIT) Inferred lead 1.07 % 33,020,000 No Yes Unknown
Prepared by J.J. O'Donnel onsite Qualified Person for Pacifica and C. Pearson, Pearson Geological Ltd, Independent Qualified Person. Also alvailable on Sedar. Based on 2006 drill holes.; Updated mineral resource calculations prepared March 30, 2007 published in Pacifica Resources Apr 2, 2007 press release. Initial Ni 43-101 calculations for HC deposit. Using 2% zinc cut-off.
2007 HC DEPOSIT (OPEN PIT) Indicated lead 1.04 % 8,600,000 No Yes Unknown
Prepared by J.J. O'Donnel onsite Qualified Person for Pacifica and C. Pearson, Pearson Geological Ltd, Independent Qualified Person. Also alvailable on Sedar. Based on 2006 drill holes.; Updated mineral resource calculations prepared March 30, 2007 published in Pacifica Resources Apr 2, 2007 press release. Initial Ni 43-101 calculations for HC deposit. Using 2% zinc cut-off.
2007 HC WEST DEPOSIT (OPEN PIT) Inferred lead 1.32 % 13,930,000 No Yes Unknown
Prepared by J.J. O'Donnel onsite Qualified Person for Pacifica and C. Pearson, Pearson Geological Ltd, Independent Qualified Person. Also alvailable on Sedar. Based on 2006 drill holes.; Updated mineral resource calculations prepared March 30, 2007 published in Pacifica Resources Apr 2, 2007 press release. Initial Ni 43-101 calculations for HC West deposit. Using 2% zinc cut-off.
2007 HC WEST DEPOSIT (OPEN PIT) Indicated lead 1.16 % 4,470,000 No Yes Unknown
Prepared by J.J. O'Donnel onsite Qualified Person for Pacifica and C. Pearson, Pearson Geological Ltd, Independent Qualified Person. Also alvailable on Sedar. Based on 2006 drill holes.; Updated mineral resource calculations prepared March 30, 2007 published in Pacifica Resources Apr 2, 2007 press release. Initial Ni 43-101 calculations for HC West deposit. Using 2% zinc cut-off.
2007 HC DEPOSIT (OPEN PIT) Inferred zinc 3.85 % 33,020,000 No Yes Unknown
Prepared by J.J. O'Donnel onsite Qualified Person for Pacifica and C. Pearson, Pearson Geological Ltd, Independent Qualified Person. Also alvailable on Sedar. Based on 2006 drill holes.; Updated mineral resource calculations prepared March 30, 2007 published in Pacifica Resources Apr 2, 2007 press release. Initial Ni 43-101 calculations for HC deposit. Using 2% zinc cut-off.
2007 HC DEPOSIT (OPEN PIT) Indicated zinc 4.01 % 8,600,000 No Yes Unknown
Prepared by J.J. O'Donnel onsite Qualified Person for Pacifica and C. Pearson, Pearson Geological Ltd, Independent Qualified Person. Also alvailable on Sedar. Based on 2006 drill holes.; Updated mineral resource calculations prepared March 30, 2007 published in Pacifica Resources Apr 2, 2007 press release. Initial Ni 43-101 calculations for HC deposit. Using 2% zinc cut-off.
2007 HC WEST DEPOSIT (OPEN PIT) Inferred zinc 4.98 % 13,930,000 No Yes Unknown
Prepared by J.J. O'Donnel onsite Qualified Person for Pacifica and C. Pearson, Pearson Geological Ltd, Independent Qualified Person. Also alvailable on Sedar. Based on 2006 drill holes.; Updated mineral resource calculations prepared March 30, 2007 published in Pacifica Resources Apr 2, 2007 press release. Initial Ni 43-101 calculations for HC West deposit. Using 2% zinc cut-off.
2007 HC WEST DEPOSIT (OPEN PIT) Indicated zinc 4.36 % 4,470,000 No Yes Unknown
Prepared by J.J. O'Donnel onsite Qualified Person for Pacifica and C. Pearson, Pearson Geological Ltd, Independent Qualified Person. Also alvailable on Sedar. Based on 2006 drill holes.; Updated mineral resource calculations prepared March 30, 2007 published in Pacifica Resources Apr 2, 2007 press release. Initial Ni 43-101 calculations for HC West deposit. Using 2% zinc cut-off.