Mine detail: Hancock Mine

Previously called 'Sumner'

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Location

Lat / long:

47.12861, -88.59005

Resource(M)

Primary:	Copper
Ore:	Copper
Gangue:	Feldspar, Epidote, Quartz, Calcite
Orebody form:	TABULAR

Production

Operation type:	Underground
Deposit type:	Lode
Production size:	Small
Development status:	Past Producer
Production years:	1861-1886, 1911, 1913-18.
First production started:	1861
Last production ended:	1918

Geology

Host rock:	Ashbed Amygdaloid, Portage Lake Volcanics
Host type:	Basalt

References

MRDS	W062229
DEP	10082866
Reference	{Deposit:: BUTLER, B.S., AND BURBANK, W.S., 1929, THE COPPER DEPOSITS OF MICHIGAN: USGS PROF PAPER NO. 144, 238 PP.}{Deposit:: CORNWALL, H.R., AND WRIGHT, J.C., 1956, GEOLOGIC MAP OF THE HANCOCK QUADRANGLE, MICHIGAN: USGS MAP MF-46, SCALE 1:24000}{Production:: BUTLER, B.S., AND BURBANK, W.S., 1929, P. 86.}
Reporter	Sutphin, D.M. (Cannon, W.F.), Mason Jr., G.T.