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File Created: 15-Aug-1990 by Garry J. Payie (GJP)
Last Edit:  12-Nov-2014 by Laura deGroot (LDG)

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Name POLY 2, POLY Mining Division Victoria
BCGS Map 092B081
Status Showing NTS Map 092B13W
Latitude 048º 51' 12'' UTM 10 (NAD 83)
Longitude 123º 53' 53'' Northing 5411541
Easting 434122
Commodities Manganese, Rhodonite, Gemstones, Silver, Gold Deposit Types J03 : Mn veins and replacements
Q02 : Rhodonite
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The Poly 2 occurrence is located between Chipman and Solly creeks, approximately 1.5 kilometres north of the Chemainus River.

The area is underlain by sediments of the Mississippian to Pennsylvanian Fourth Lake Formation (previously the upper part of Muller's Myra Formation), Buttle Lake Group. The sediments consist of interbedded laminated chert, argillite and siltstone with beds of fine to coarse-grained tuff. Bedding strikes northwest with a moderate to steep northeast dip. The unit, particularly the cherty intervals, is locally cut by quartz veins and veinlets.

Locally, a feldspar porphyritic diabasic to basaltic sill (informally called the Mount Hall Gabbro), likely coeval with the Upper Triassic Karmutsen Formation, is exposed over several hundred metres in the area. The contact of the sediments and the sill strikes 335 degrees and dips 30 degrees northwest.

Mineralization is reported to comprise manganese oxides in quartz veins and manganese-rich chert or greenish grey to pink rhodonite in close proximity to the vein. The quartz vein is up to 0.7 metres in width and is clear to whitish with a greasy luster. Up to 10 per cent manganese oxide minerals, including pyrolusite and psilomelane, and associated limonite staining occurs.

In 1985 and 1986, E. Specogna completed programs of prospecting, rock sampling and four diamond drill holes, totalling 20.7 metres. Trench and rock pit samples yielded values up to 1.1 grams per tonne gold and 11.3 grams per tonne silver (Assessment Report 14919).

In 1987, Canamin Resources completed a program of geological mapping and geochemical sampling. Samples of the vein assayed 1.82 per cent manganese across 0.7 metres and adjacent manganiferous wall-rock with quartz veinlets sampled on either side of the vein, assayed 9.24 and 7.16 per cent manganese (Assessment Report 16906). Silver assays up to 1.3 grams per tonne were also obtained from these samples.

EMPR ASS RPT *14919, 15823, *16906
EMPR COMM FILE (Sargent, H. (1956): Manganese Occurrences in
British Columbia; Leaming, S.F. (1966): Rhodonite in British
Columbia, The Canadian Rockhound; Danner, W.R. (1975): Gem
Materials of British Columbia, Montana Bureau of Mines and
Geology, Special Publication 74)
EMPR FIELDWORK 1982, p. 46; 1987, pp. 81-91
EMPR OF 1988-8
EMPR PF (Prospectors Report 1998-15 by Barbara Welsh)
GSC MAP 42A; 1386A; 1553A
GSC MEM 13; 96
GSC OF 463; 701; 821
GSC P 72-44; 72-53; 75-1A, p. 23; 79-30
PERS COMM Massey, N.W.D., 1991
Cowley, P. (1979): Correlation of Rhodenite Deposits on Vancouver
Island and Saltspring Island, British Columbia, Unpublished B.Sc.
Thesis, University of British Columbia