Mine detail: York Mountains Beryllium - Fluorite and Tin Deposits

Previously called 'Lost River Mine Area'

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Location

Lat / long:

65.41593, -167.17007

Resource(B)

Primary:	Fluorine-Fluorite, Beryllium, Tin
Secondary:	Tungsten, Zinc, Copper, Molybdenum, Lead
Tertiary:	Silver
Ore:	Bertrandite, Beryl, Cassiterite, Chrysoberyl, Euclase, Fluorite, Galena, Helvite, Sphalerite, Stannite, Wolframite
Orebody form:	TABULAR
Discovery year:	1900

Production

Operation type:	Unknown
Production size:	Yes
Development status:	Producer
First production started:	1913

Geology

Host rock:	Limestones, Argillaceous Limestone, Dolomitized Limestone
Host type:	Limestone,Granite
Associated rock:	Lamprophyre And Rhyolitic Dikes;Granite Stocks
Associated type:	Rhyolite,Granite
Structure:	Mint River And Rapid River Thrust Faults, Normal Faults - 3 Sets. 1st Set Strikes N 65 - 85 Deg E And Dip Almost Vertically. 2nd Set Strikes N 20 - 60 Deg W. A Third Set Strikes Almost North. Lamprophyre Dikes Intrude The First Set.

References

MRDS	W006903
DEP	10069392
Reference	{Deposit:: SAINSBURY, C.L., 1964, GEOLOGY OF LOST RIVER MINE AREA, ALASKA: USGS BULL. 1129, 80 P.}{Deposit:: SAINSBURY, C.L., 1969, GEOLOGY AND ORE DEPOSITS OF THE CENTRAL YORK MOUNTAINS, WESTERN SEWARD PENINSULA, ALASKA: USGS BULL. 1287, 101 P.}{Deposit:: 1901 GEOLMAP COLLIER, A.J. AND HESS, F.L. (BULL. 733)}{Deposit:: 1940 GEOLMAP MERTIE, J.B. JR, COATS, R.R. (BULL. 1129)}{Deposit:: 1960 GEOLMAP SAINSBURY, C.L. (BULL. 1287)}{Deposit:: 1964 DIREXPL U.S. BU MINES}{Production:: SAINSBURY, C.L., 1969, USGS BULL. 1287.}{Reserve-Resource:: SAINSBURY, C.L., 1969, USGS BULL. 1287. {{ HODGE, B.L., 1973, INDUSTRIAL MINERALS, 5/73, P. 13.}
Reporter	Schruben, Paul G. (Sainsbury, C. L.)