MINFILE Mineral Inventory

MINFILE Record Summary

MINFILE No 082KSE075

File Created:	16-Aug-1995	by	Gilles J. Arseneau (GJA)
Last Edit:	29-Sep-2019	by	Karl A. Flower (KAF)

SUMMARY

Summary Help


		NMI
Name	NINE LAKE, PICO	Mining Division	Golden
		BCGS Map	082K009
Status	Prospect	NTS Map	082K01E
Latitude	050º 00' 14''	UTM	11 (NAD 83)
Longitude	116º 12' 56''	Northing	5539358
		Easting	556214
Commodities	Tungsten	Deposit Types	I12 : W veins
Tectonic Belt	Omineca	Terrane	Ancestral North America

Capsule Geology

The Nine Lake (Pico) tungsten occurrence is located 4.75 kilometres south of Doctor Peak of the Purcell Mountain Range, in a small cirque locally known as Pico Basin.

Regionally, the area is underlain by sediments of the Lower Aldridge Formation of the Proterozoic Purcell Supergroup.

In the vicinity of the occurrence, the Aldridge Formation consists of quartz wacke, quartz arenite, siltstone and lesser argillite intruded by thick gabbroic sills of the Moyie Intrusions. The sedimentary rocks are characteristically rusty weathering, fine to medium grained and thin to medium bedded. Individual beds range from a few millimetres to 30 centimetres thick. Discontinuous horizons of intraformational conglomerate were noted in a number of localities. Finely disseminated pyrrhotite is common. The sedimentary rocks of the Lower Aldridge have undergone both thermal and regional metamorphism to at least greenschist facies. Biotite alteration in the argillaceous units and quartz-sericite alteration in the arenite and wacke have generated widespread phyllitic and schistose textures.

The Proterozoic Moyie sills cutting the Lower Aldridge Formation are sill-like in overall form but often crosscut bedding or appear as irregular lenses. Some are in excess of 100 metres thick and can be traced almost 10 kilometres. The thicker sills have coarse-grained gabbroic cores and finer dioritic margins. They are all mainly composed of hornblende and plagioclase phenocrysts set in a matrix of similar composition (Paper 1990-1).

The White Creek Batholith is a well-differentiated Cretaceous granitic intrusion that cuts the Lower Aldridge rocks to the east and south. Along the northern border of the batholith, a megacrystic granodiorite phase is common. Plagioclase phenocrysts are commonly 3 to 5 centimetres long, set in a matrix of fine- to medium-grained plagioclase, potassium feldspar, quartz and biotite. Magnetite and pyrite occur locally. Aplite and pegmatite dikes are common within the Lower Aldridge sedimentary rocks (Geological Survey of Canada Memoir 369).

The Purcell sedimentary rocks strike 060 degrees and dip gently (25 degrees) northwest. Deformation of the strata is minimal but minor northwest-trending symmetrical folds have been documented (Assessment Report 3287).

Locally, scheelite occurs in fractured stockwork zones in Middle Proterozoic Moyie meta-diorite sills. The fractures vary from less than 1 millimetre to up to 13 millimetre wide seams. The sills occur within quartzwacke, quartz arenites and siltstones of the Middle Proterozoic Aldridge Formation. Trenching has exposed the mineralization over an area of approximately 60 to 420 metres wide and 780 metres long. Previous work, in the 1950s, is reported to have identified a 2-metre wide, scheelite-bearing quartz vein associated with a gabbroic sill along a strike length of 210 metres.

In the 1950s, a calculated average assay for the vein yielded 0.13 per cent tungsten tri-oxide (Assessment Report 6413).

In 1973, chip sampling of trenches yielded up to 0.1 per cent tungsten tri-oxide over 24 metres, whereas grab samples yielded up to 1.5 per cent tungsten tri-oxide (Property File - Fred Chow [1974-01-01]: Dewar Creek Project - 1973).

During the 1950s, Cominco examined the area. During 1971 through 1973, Kerr Addison Mines completed programs of soil and rock sampling, geological mapping, trenching and ground geophysical surveys on the area as the Nine Lake Claims.

Bibliography

EMPR ASS RPT 3287, 4705, *6413, 11737

EMPR GEOS MAP 1995-1; 1998-4

EMPR P 1990-1, pp. 29-37

EMPR PF (Chevron Standard Limited [unknown]: Map - Geochemistry - White Creek - Purcell Project C445; Unknown [Unknown]: Map - Skookumchuck and Buhl Creek area - Sampling - C445; Kerr Addison Mines Ltd. [unknown]: Mylar Overlays from 1973 Report - Nine Lake Claims; Kerr Addison Mines Ltd. [unknown]: Aeromagnetic maps of Dewar Creek property; Kerr Addison Mines Ltd. [unknown]: C.E.M. Test results at Nine Lake Group; unknown [unknown]: Claim map: Nine Lake; unknown [unknown]: Dewar Creek claim and geochemical maps; unknown [unknown]: Dewar Creek geochemical notes; unknown [unknown]: EM and Mag profile sketches at Nine Lake Claims; unknown [unknown]: EM and Mag profiles at Nine Lake; Kerr Addison Mines Ltd. [unknown]: Nine Lake EM and Mag profiles; Kerr Addison Mines Ltd. [1970-01-01]: Map showing location of the Nine Lake & BA Claims; Kerr Addison Mines Ltd. [1971-01-22]: Potential mineral zones recommended for further study at Dewar; Surveys and Mapping Branch [1971-01-01]: Aeromagnetic map of Findlay Creek Area - Dewar Creek property; Surveys and Mapping Branch [1971-01-01]: Aeromagnetic Flight Lines Map - Dewar Creek property; F. Chow [1971-05-01]: Dewar Creek Project Report; Kerr Addison Mines Ltd. [1971-06-01]: Elsec Aeromagnetic Survey for Dewar Creek Project; Vancouver Geochemical Laboratories Ltd. [1971-06-09]: Geochemical Analytical Reports - 1971 - Kerr Addison Mines Ltd. - Dewar Creek; W. M. Sirola [1971-07-13]: Correspondence re: Dewar Creek Project; Boxd, S. [1971-08-01]: Proposed E. M. Survey at Dewar; Kerr Addison Mines Ltd. [1971-08-01]: Aeromagnetic Survey - Finlay Creek, Dewar Creek - East Half - Canal Flats - West Half - Dewar Creek Project; Kerr Addison Mines Ltd. [1971-08-23]: Mc Mineral Claims and Nine Lake Staking Plan; Kerr Addison Mines Ltd. [1971-09-01]: Geochemical Survey - Silt and Soil Sampling Plan - Cu - Finlay Creek East Half and Dewar Creek East Half - Dewar Creek Project; Kerr Addison Mines Ltd. [1971-09-01]: Geochemical Survey - Silt and Soil Sampling Plan - Pb - Finlay Creek East Half and Dewar Creek East Half - Dewar Creek Project; Kerr Addison Mines Ltd. [1971-09-01]: Geology - Finlay Creek and Dewar Creek - East Half - Dewar Creek Project; Kerr Addison Mines Ltd. [1971-09-01]: Rock Geochem Plan - MC and Nine Lake Mineral Claims - Dewar Creek Project - Greenland Creek Area; Kerr Addison Mines Ltd. [1971-09-01]: Silt Sampling Plan - Cu - MC and Nine Lake Mineral Claims - Dewar Creek Project - Greenland Creek Area; Kerr Addison Mines Ltd. [1971-09-01]: Silt Sampling Plan - Pb - MC and Nine Lake Mineral Claims - Dewar Creek Project - Greenland Creek Area; Kerr Addison Mines Ltd. [1971-09-01]: Silt Sampling Plan - Zn - MC and Nine Lake Mineral Claims - Dewar Creek Project - Greenland Creek Area; Kerr Addison Mines Ltd. [1971-09-01]: Soil Sampling Plan - Cu Contour - MC and Nine Lake Mineral Claims - Dewar Creek Project - Greenland Creek Area; Kerr Addison Mines Ltd. [1971-09-01]: Soil Sampling Plan - Pb - MC and Nine Lake Mineral Claims - Dewar Creek Project - Greenland Creek Area; Kerr Addison Mines Ltd. [1971-09-01]: Soil Sampling Plan - Zn - MC and Nine Lake Mineral Claims - Dewar Creek Project - Greenland Creek Area; W. M. Sirola [1979-09-13]: Re: Claim maps - Dewar Creek; Kerr Addison Mines Ltd. [1972-01-01]: Proposed EM Survey and Fill-In Soil Survey; Kerr Addison Mines Ltd. [1972-01-01]: Proposed EM and Mag Surveys at Dewar; Kerr Addison Mines Ltd. [1972-01-01]: Proposed E. M. Survey at Dewar; Vancouver Geochemical Laboratories Ltd. [1972-03-02]: Geochemical Analytical Report - 1972 - Kerr Addison Mines Ltd. - Dewar Creek; F. Chow [1972-04-01]: Dewar Creek Project - 1971; F. Chow [1972-07-08]: Correspondence re: Dewar progress report; T. Larose [1978-08-02]: Sketch map at Dewar Creek; F. Chow [1972-08-04]: Correspondence re: Dewar; unknown [1972-08-13]: Mag. Diurnal Variation, Camp #4; Kerr Addison Mines Ltd. [1972-08-22]: Geochemical Soil Survey - Zinc - MC and Nine Lake Claim Grp. - Dewar Creek Project; Greenwald, W. [1972-08-26]: Geology Plan of Part of Nine Lake Claim Group; Kerr Addison Mines Ltd. [1972-08-26]: Geochemical Soil Survey - Lead - MC and Nine Lake Claim Grp. - Dewar Creek Project; Kerr Addison Mines Ltd. [1972-08-26]: Geophysical Plan (EM.) - Mc and Nine Lake Claim Group - Dewar Creek Project; Chow, F. [1972-08-26]: MC and Nine Lake Claim Group: Geological Plan; Chow, F. [1972-09-07]: Preliminary summary of Nine Lake Magnetometer and EM Survey; F. Chow [1973-02-01]: Dewar Creek Project - 1972; Vancouver Geochemical Laboratories Ltd. [1973-02-01]: Geochemical Analytical Report - 1973 - Kerr Addison Mines Ltd. - Dewar Creek; Kerr Addison Mines Ltd. [1973-02-01]: Dewar Creek Project: Regional Tungsten Geochemical; Kerr Addison Mines Ltd. [1973-02-01]: Geochemical Plan (Tungsten) - Nina Lake Claims; unknown [1973-03-02]: Rock Specimens at Nine Lake claims; Sirola, W. M. [1973-03-21]: Dewar Creek Project 1972 Report; Kerr Addison Mines Ltd. [1973-03-29]: Proposed trenching at Nine Lake; W. Grunewald [1973-03-30]: Evaluation of Tungsten - Soil, Silt and Rock Geochemistry - Dewar Creek Project 1973; Chow, F. [1973-04-01]: Nine Lake Claims: Geochemical Plan, Tungsten and Tin; W.M. Sirola [1973-04-06]: Addendum to Dewar Creek Report; unknown [1973-04-20]: Claim map at Dewar Creek; Chow, F. [1973-04-26]: Proposed road and trenching locations at Dewar; Kerr Addison Mines Ltd. [1973-06-01]: 1971 Regional Geochemical Survey - Headwaters of Finlay and Skookumchuck Cr. - Showing Mo Distribution Plus Spot Analysis of W and Sn - Nine Lake Mineral Claim Area; unknown [1973-07-29]: Field sample notes at Dewar Creek; Kerr Addison Mines Ltd. [1973-08-01]: Topographic survey at Dewar Creek Project; Warnock Hersey International Ltd. [1973-08-08]: Dewar Creek Nine Lake assay results; Chow, F. [1973-09-06]: Nine Lake Group: Trench Sampling Assay Certificates; Kerr Addison Mines Ltd. [1973-11-01]: Geochemical Soil Survey - Molybdenum Values Along "White Creek Batholith" Contact at Nine Creek - MC and Nine Lake Claim Grp. - Map No. 4E (South Half); Kerr Addison Mines Ltd. [1973-11-01]: Geological Plan - MC and Nine Lake Claim Group - Dewar Creek Project; *F. Chow [1974-01-01]: Dewar Creek Project - 1973; Vancouver Geochemical Laboratories Ltd. [1974-01-09]: Geochemical Analytical Report - 74-48 - Kerr Addison Mines Ltd. - Dewar Creek; Kerr Addison Mines Ltd. [1974-01-14]: Claim Map of Nine Lake and MC Group - Showing Status of Mineral Claims - Dewar Creek Project; F. Chow [1974-01-25]: Dewar Creek Project: Geochem research and investigation; Hajek, J. H. [1974-01-30]: Geochemical Assessment of January 1974 Analyses, Dewar Creek Project; Sirola, W. M. [1974-01-30]: Re: Dewar Creek Project: Results of geochemical consultation; Sirola, W.M. [1974-01-31]: Letter Re: Dewar Creek Project - Fred Chow's Report on 1973 Field Work; Kerr Addison Mines Ltd. [1974-03-25]: Claim maps - Nine Lake; Unknown [1975-01-01]: Proposed geochemical deep soil sampling at Nine Lake Group; Vangeochem Lab Ltd. [1975-08-27]: Geochemical Analytical Report - 1975 - Kerr Addison Mines Ltd. - Dewar Creek; Unknown [1976-07-15]: Field Notes - Skookumchuck Creek area - C445; Unknown [1976-07-16]: Map - Skookumchuck Mountain area - Sampling - C445; Chevron Standard Ltd. [1976-12-01]: Report on Explorations in Southeastern British Columbia - The Nelson and Fort Steele Mining Divisions - C445 - Geophysical - Geochemical; J.R. Woodcock Consultants Ltd. [1979-12-01]: Map - Regional Geology and Mineral Prospects - Rio Moly Project; Eagle Plains Resources Ltd. [1998-04-30]: Annual Report - 1997 - Eagle Plains Resources Ltd. - Findlay Creek Project)

GSC MAP 1712A; 1713A

GSC MEM 369

WWW http://www.infomine.com/index/properties/SOUTH_FINDLAY.html

Pope, A.J. (1989): The Tectonics and Mineralization of the Toby-

Horsethief Creek Area, Purcell Mountains, Southeast British

Columbia, Canada, unpublished Ph.D. Thesis, University of London,

England

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