Mine detail: Girard Exploration

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Location: Keweenaw County, Michigan, United States, North America
Lat / long: 47.42944, -87.84586
dep_id: 10310110
mrds_id: LW00110
Commodity type: metallic
Major mineral: Copper
Operation type: Underground
Deposit type: Fissure Copper Veins
Production size: Unknown
Development status: Prospect
model: 96: Native Cu
Reporter: Anderson, Arlene (M. Gere)
hrock_unit: Portage Lake Volcanics
hrock_type: Basalt
Structure: Syncline
Year first produced: 1864
yr_lst_prd: 1865
References:
  • JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, KEWEENAW COUNTY, P.129, SITE ID # 420034, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.
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