Mine detail: White Pine Extension Mine

Previously called 'Pinex Mine'

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Location

Lat / long: 46.74389, -89.72426

Resource(M)

Primary: Copper
Ore: Copper, Chalcocite
Gangue: Quartz, Feldspar, Epidote, Chlorite, Tourmaline, Apatite, Mica
Discovery year: 1872

Production

Operation type: Underground
Deposit type: Secondary Enrichment
Production size: Small
Development status: Past Producer
First production started: 1915
Last production ended: 1918

Geology

Host rock:Nonesuch Formation
Host type:Siltstone,Sandstone,Shale
Structure:White Pine fault
Alteration processes:Copper replacement, sandstone bleaching

References

MRDSW031516
DEP10080389
Reference{Deposit:: COPPER RANGE CO., UNPUBLISHED, 1968, BEDROCK GEOLOGY MAP OF THE BERGLAND (NW 1/4) QUADRANGLE, ONTONAGON COUNTY, MICHIGAN.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., INVENTORY OF UNDERGROUND OF MINES, ONTONAGON COUNTY, P. 258-260, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.}
ReporterYeager, Keith (Cannon, W.), Sutphin, D.M., Mason Jr., G.T., Anderson, Arlene (M. Gere)