Mine detail: Silver Dollar Mine

Previously called ''

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Location

Lat / long:

43.72274, -103.61667

Resource(B)

Primary:	Mica
Tertiary:	Beryllium
Ore:	Beryl, Muscovite
Gangue:	Apatite, Biotite, Kyanite, Oligoclase, Quartz, Tourmaline
Orebody form:	LENTICULAR
Discovery year:	1942

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer

Geology

Host type:	Mica Schist
Associated type:	Pegmatite
Structure:	Below The 55 Ft Level Is A Strong Fracture Zone Related To A Fault That Strikes N10w And Dips 20 Ne. There Is Little Displacement, But There Are Numerous Related Joints.

References

MRDS	D008100
DEP	10097813
Reference	{Deposit:: U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707.}{Deposit:: ROBERTS, W.L., AND RAPP, GEORGE, 1965, MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18.}{Deposit:: USGS PP 247, P. 190-191.}{Production:: U.S. BUREAU OF MINES INFORMATION CIRCULAR 7707.}
Reporter	Barari, Rachel A.