Commodities
PrimaryCopper
Commodity typeM
Deposit
Deposit typeSecondary Enrichment
Model96: Native Cu
Deposit sizeS
Ore controlStratigraphic-in sandstone and permeable shale near base of formation, also in small fissure veins.
Materials
Ore mineralsCopper, Chalcocite
GangueQuartz, Feldspar, Epidote, Chlorite, Tourmaline, Apatite, Mica
Geology
Host rockSiltstone,Shale · Nonesuch Formation
AlterationCopper replacement, sandstone bleaching
Economic & production
Development statusPast Producer
Identification
Deposit ID10080384
MRDS IDW031511
RegionNA
Data scoreB
Coordinates46.81417, -89.58481
References
COPPER RANGE CO., UNPUBLISHED, 1968, BEDROCK GEOLOGY MAP OF THE WHITE PINE (SE 1/4) QUADRANGLE, ONTONAGON COUNTY, MICHIGAN. GEOLOGY MAPPED AND COMPILED BY COPPER RANGE EXPLORATION CO., INC., AND BY H. HUBBARD (U.S.G.S.)BUTLER, B.S., AND BURBANK, W.S., 1929, THE COPPER DEPOSITS OF MICHIGAN: U.S. GEOLOGICAL SURVEY PROF. PAPER 144, 238P.WILBAND, J.T., 1978, THE COPPER RESOURCES OF NORTHERN MICHIGAN; PREPARED FOR THE U.S. BUREAU OF MINES, CONTRACT NO. J0366067, 66P.