Mine detail: Etta Spodumene Mine

Previously called 'Etta Claim and Ferguson Claim'

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Location

Lat / long:

43.88079, -103.41889

Resource(B)

Primary:	Feldspar, Mica, Lithium, Tin
Secondary:	Beryllium, Tantalum
Tertiary:	Tungsten
Ore:	Albite, Beryl, Cassiterite, Muscovite, Plagioclase, Spodumene, Wolframite
Gangue:	Barite, Biotite, Bismuth, Chalcocite, Chalcopyrite, Corundum, Diopside, Eucryptite, Galena, Gold, Kaolinite, Lazulite, Malachite, Molybdenite, Olivenite, Opal, Petalite, Pyrite, Quartz, Rutile, Siderite, Sphalerite, Stannite, Torbernite, Uraninite, Vivianite
Orebody form:	PIPELIKE, ELLIPTICAL

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1898

Geology

Host rock:	Schist
Host type:	Schist
Associated rock:	Pegmatite;Harney Peak Granite
Associated type:	Pegmatite

References

MRDS	SD02304
DEP	10055688
Reference	{Deposit:: U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707}{Deposit:: SCHWARTZ, G.M., 1925, GEOLOGY OF THE ETTA SPODUMENE MINE, ECONOMIC GEOLOGY, VOL. 20, PP. 646-659}{Deposit:: FISHER, D.J., 1945, PRELIMINARY REPORT ON THE MINERALOGY OF SOME PEGMATITES NEAR CUSTER, SOUTH DAKOTA GEOLOGICAL SURVEY REPORT OF INVESTIGATIONS 50}{Deposit:: ROBERTS W.L., AND RAPP, GEORGE, 1965, MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18 / U.S. GEOLOGICAL SURVEY, U.S.BUREAU OF RECLAMATION, AND SOUTH DAKOTA GEOLOGICAL SURVEY, 1975, MINERAL AND WATER RESOURCES OF SOUTH DAKOTA, SOUTH DAKOTA GEOLOGICAL SURVEY BULLETIN 16 / BIENIEWSKI, C.L., AND AGNEW, A.F., 1964, THE MINERAL INDUSTRY OF SOUTH DAKOTA IN 1962, SOUTH DAKOTA GEOLOGICAL SURVEY MINERALS REPORT 10}{Production:: U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707 / SOUTH DAKOTA GEOLOGICAL SURVEY MINERALS REPORT 10}
Reporter	Barari, Rachel A.