Mine detail: Elm River Mine

Previously called 'Contact Mine'

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Location

Lat / long: 46.92333, -88.82978

Resource(M)

Primary: Copper
Ore: Copper
Gangue: Quartz, Calcite, Epidote, Pumpellyite-(Mg), Chlorite, Feldspar, Silver
Discovery year: 1899

Production

Operation type: Underground
Deposit type: Secondary Enrichment
Production size: Small
Development status: Past Producer
Last production ended: 1906

Geology

Host rock:Portage Lake Volcanics
Host type:Basalt
Alteration processes:Removal of hematite, copper replacement, quartz- pumpellyite bleaching

References

MRDSW031538
DEP10080407
Reference{Deposit:: COPPER RANGE CO., UNPUBLISHED, 1968, BEDROCK GEOLOGY MAP OF THE WINNER (NE 1/4) QUADRANGLE, HOUGHTON COUNTY, MICHIGAN. GEOLOGY MAPPED AND COMPILED BY COPPER RANGE EXPLORATION CO., INC., AND BY H. HUBBARD (U.S.G.S.)}{Deposit:: BUTLER, B.S., AND BURBANK, W.S., 1929, THE COPPER DEPOSITS OF MICHIGAN: U.S. GEOLOGICAL SURVEY PROF. PAPER 144, 238P.}{Deposit:: WILBAND, J.T., 1978, THE COPPER RESOURCES OF NORTHERN MICHIGAN; PREPARED FOR THE U.S. BUREAU OF MINES, CONTRACT NO. J0366067, 66P.}{Deposit:: JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, HOUGHTON COUNTY, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.}
ReporterYeager, Keith (Cannon, W.), Sutphin, D.M., Mason Jr., G.T., Anderson, Arlene (M. Gere)