Mine detail: Winthrop Mine

Previously called ''

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Location

Lat / long:

47.4075, -88.20643

Resource(M)

Primary:	Copper
Ore:	Copper
Orebody form:	IRREGULAR

Production

Operation type:	Underground
Deposit type:	Fissure Copper Veins
Production size:	Unknown
Development status:	Past Producer
First production started:	1863
Last production ended:	1865

Geology

Host rock:	Portage Lake Volcanics
Host type:	Basalt
Structure:	Syncline

References

MRDS	LW00098
DEP	10310098
Reference	JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, KEWEENAW COUNTY, P. 256-257, SITE ID # 420091, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.
Reporter	Anderson, Arlene (M. Gere)