Commodities
PrimaryMica, Beryllium
TertiaryFeldspar, Tantalum
Commodity typeB
Deposit
Deposit sizeS
WorkingsSurface/Underground
Orebody formDIKE
Materials
Ore mineralsBeryl, Feldspar, Muscovite
GangueQuartz, Siderite, Tourmaline, Triphylite
Geology
Host rockPegmatite
Associated rockPegmatite · Pegmatite
StructureAnticlinal Fold That Strikes Northwest And Dips South
Economic & production
Development statusPast Producer
First production1879
Identification
Deposit ID10055683
MRDS IDSD02298
Alternate namesMcmackin Mine
RegionNA
Data scoreB
Coordinates43.79413, -103.64307
References
U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707FISHER, D.J., 1945, PRELIMINARY REPORT ON SOME OF THE PEGMATITES NEAR CUSTER, SOUTH DAKOTA GEOLOGICAL SURVEY REPORT OF INVESTIGATIONS 50STERRET, D.B., 1923, MICA DEPOSITS OF THE UNITED STATES, U.S. GEOLOGICAL SURVEY BULLETIN 740U.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 / ROBERTS, W.L., AND RAPP, GEORGE, 1965, MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18