Commodities
PrimaryGold, Silver
Commodity typeM
Deposit
Deposit typeReplacement
Deposit sizeS
WorkingsUnderground
Ore controlLower Contact Zone, Which Here Consists Of 20 Ft Of Interbedded Shale And Dolomite Resting On Basal Quartzite, Just Below The Sugarloaf Sill
Geology
Associated rockPhonolite · Sugarloaf Sill (Phonolite)
StructureDikes And Minor Faults One Fault To The West Of The Main Workings Has 300 Ft Downthrow.
Economic & production
Development statusPast Producer
Identification
Deposit ID10104222
MRDS IDSD02139
Alternate namesGolden Reward Group
RegionNA
Data scoreB
Coordinates44.32357, -103.79919
References
US BUREAU OF MINES, 1954 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 1 , BUREAU OF MINES INFORMATION CIRCULAR 7688 .SHAPIRO, L. H., AND GRIES, J. P., 1970 , ORE DEPOSITS IN ROCKS OF PALEOZOIC AND TERTIARY AGE OF THE NORTHERN BLACK HILLS, SOUTH DAKOTA, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY.