Description
Noel Johnson; Noel was a negro slave - Cyrus Mendenhall had bought Noels freedom for $250, paid Noel $18,000 for to mine his claim
Commodities
PrimaryCopper
SecondarySilver
Commodity typeM
Deposit
Deposit typeSecondary Enrichment
Model96: Native Cu
Deposit sizeL
Orebody formIRREGULAR
Ore controlConcentrated in shoots (stratigraphic in amygdaloid of fissure related)
Materials
Ore mineralsCopper, Silver
GangueQuartz, Calcite, Epidote, Pumpellyite-(Mg), Chlorite, Feldspar, Datolite
Geology
Host rockBasalt · Portage Lake Volcanics
StructureSyncline
AlterationRemoval of hematite, copper replacement, quartz-pumpellyite bleaching
Economic & production
Development statusPast Producer
First production1850
Discovery year1849
Identification
Deposit ID10080397
MRDS IDW031526
RegionNA
Data scoreB
Coordinates46.76528, -89.10007
References
COPPER RANGE CO., UNPUBLISHCOPPER RANGE CO., UNPUBLISHED, 1968, BEDROCK GEOLOGY MAP OF THE GREENLAND (SE 1/4) QUADRANGLE, ONTONAGON COUNTY, MICHIGAN.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, 238 P.WILBAND, J.T., 1978, THE COPPER RESOURCES OF NORTHERN MICHIGAN; PREPARED FOR THE U.S. BUREAU OF MINES, CONTRACT NO. J3066067, 66P.JOHNSON, A.M., AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, ONTONAGON COUNTY, P. 129-135, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.BUTLER AND BURBANK (1929)