Mine detail: Cliff Fissure

Previously called ''

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Location

Lat / long:

47.37389, -88.31421

Resource(M)

Primary:	Copper
Ore:	Copper
Orebody form:	FISSURE

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Production years:	1845-1870; 1872-1887
First production started:	1845
Last production ended:	1887

Geology

Host rock:	Portage Lake Volcanics
Host type:	Basalt
Structure:	Fissure cutting the Greenstone flow, mining activity on south side of flow

References

MRDS	W060052
DEP	10082615
Reference	{Deposit:: BUTLER, B.S., AND BURBANK, W.S., 1929, THE COPPER DEPOSITS OF MICHIGAN: USGS MAP GQ-34, SCALE 1:24000}{Deposit:: DAVIDSON, E.S., ESPENSHADE, G.H., WHITE, W.S., AND WRIGHT, J.C., 1955, BEDROCK GEOLOGY OF THE MOHAWK QUADRANGLE, MICHIGAN: USGS MAP GQ-54, SCALE 1:24000}{Production:: BUTLER AND BURBANK (1929)}
Reporter	Sutphin, D.M., Mason Jr., G.T., Schruben, Paul G., Nicholson, Suzanne