South Dakota · Custer County
Past Producer
Maryland Lode
Custer County, South Dakota, United States
Feldspar Mica
Land & claims · BLM · live
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Surface manager + active mining claims at this point, live from BLM. The "open to location" notes are a general 1872-Mining-Law guide, not BLM output — decision-support only; verify with BLM MLRS and on the ground before staking or entry.
Commodities
PrimaryFeldspar, Mica
Commodity typeNonmetallic
Deposit
Deposit sizeSmall
WorkingsSurface
Materials
Ore mineralsFeldspar, Mica
Geology
Host rockGranite · Harney Peak Granite
Associated rockPegmatite · Pegmatite
Economic & production
Development statusPast Producer
Community notes
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References
USBM INFO CIRC 7707, P. 77U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707
Identification
Deposit ID10055660
MRDS IDSD02269
Alternate namesOlds Lode
RegionNA
Data scoreB
Coordinates43.8269, -103.46389
Base: USGS MRDS (public domain, frozen 2011). Community notes © their authors, CC-BY. Land data live from BLM.