Mine detail: Algomah Mine

Previously called ''

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Location

Lat / long:

46.76139, -89.04007

Resource(M)

Primary:	Copper
Ore:	Copper
Gangue:	Quartz, Calcite, Epidote, Pumpellyite-(Mg), Feldspar, Chlorite, Silver, Tenorite, Atacamite, Malachite, Chrysocolla, Melaconite

Production

Operation type:	Underground
Deposit type:	Secondary Enrichment
Production size:	Small
Development status:	Past Producer
First production started:	1910
Last production ended:	1956

Geology

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

References

MRDS	W031532
DEP	10080402
Reference	{Deposit:: COPPER RANGE CO., UNPUBLISHCOPPER RANGE CO., UNPUBLISHED, 1968, BEDROCK GEOLOGY MAP OF THE GREENLAND (SE 1/4) QUADRANGLE, ONTONAGON COUNTY, MICHIGAN.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.)}{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. J036067, 66P.}{Deposit:: JOHNSON, A.M., AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, ONTONAGON COUNTY, P 7-11, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.}{Production:: BUTLER AND BURBANK (1929)}
Reporter	Yeager, Keith (Cannon, W.), Sutphin, D.M., Mason Jr., G.T.