MINFILE Mineral Inventory

MINFILE Record Summary

MINFILE No 104N 096

File Created:	24-Jul-1985	by	BC Geological Survey (BCGS)
Last Edit:	15-Aug-2022	by	Niel Hugo (NH)

SUMMARY

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		NMI
Name	SHAKER, ATLIN LAKE	Mining Division	Atlin
		BCGS Map	104N071
Status	Showing	NTS Map	104N13W
Latitude	059º 47' 59''	UTM	08 (NAD 83)
Longitude	133º 59' 06''	Northing	6629543
		Easting	556955
Commodities	Limestone	Deposit Types	R09 : Limestone
Tectonic Belt	Intermontane	Terrane	Cache Creek

Capsule Geology

The Shaker limestone occurrence is located west of Atlin Lake about 30 kilometres north-northwest of the community of Atlin.

A large area of Upper Mississippian to Permian Cache Creek Complex (Horsefeed Formation) limestone occurs between the upper reaches of Atlin Lake and Tagish Lake to the west. This formation consists mainly of limestone that ranges in thickness from 900 to 1500 metres and includes local bodies of mafic flow, diabase, and lithic tuff.

The rock is a massive, medium to pale grey, bioclastic limestone that has a faint brownish tinge. It is a typically crinoidal, fusulinid calcarenitic limestone that is generally recrystallized, producing either a fine-grained porcelaneous appearance or a fine crystalline rock with light and dark mottles (Geological Survey of Canada Paper 74-47).

Bibliography

EMPR IND MIN FILE (McCammon, J.W. (1973): Limestone Occurrences in B.C., p. 36)

EMPR OF 1996-11

EMPR PFD 672680, 672681, 672699, 672706, 672707, 672720, 672727

GSC MAP 1082A; 1418A

GSC MEM 307, pp. 22-23

GSC P *74-47, p. 27

GSC OF 1996-11

DIAND OF *1990-4

Cordey, F. et al. (1987): Significance of Jurassic Radiolarians from the Cache Creek Terrane, British Columbia, in Geology Vol.15, pp. 1151-1154