Mine detail: Ruby Reef Claims

Previously called 'Ruby Reef No. 1'

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Location: Custer County, South Dakota, United States, North America
Lat / long: 43.69302, -103.60917
dep_id: 10012455
mrds_id: D008095
Commodity type: nonmetallic
Major mineral: Mica
Operation type: Unknown
Production size: Small ammount of material produced
Development status: Past Producer
ore: Mica
gangue: Oligoclase, Quartz, Sillimanite, Tourmaline
orebody_fm: LENTICULAR TO TABULAR
work_type: Surface/Underground
ore_ctrl: Muscovite Concentrations Are Near One Or Both Wallx
Reporter: Barari, Rachel A.
hrock_type: Quartzite,Mica Schist
arock_type: Gneiss,Pegmatite
Year first produced: 1943
yr_lst_prd: 1944
disc_yr: 1943
discr: Louis Stratton And Francis Michaud
References:
  • Deposit:: U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707.
  • Deposit:: USGS PP 247, P. 186-188.
  • Deposit:: ROBERTS, W.L., AND RAPP, GEORGE, 1965, MINERALOGY OF THE BLACK HILLS: SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18.
  • Production:: USGS PP 247, P. 186.
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