Mine detail: Iroquois Amygdaloid

Previously called 'Iroquis LodeIroquois Amygdaloid Lode'

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Location

Lat / long: 47.31667, -88.36255

Resource(M)

Primary: Copper
Ore: Copper
Gangue: Calcite, Prehnite
Orebody form: AMYGDALOIDAL LODE
Discovery year: 1942

Production

Operation type: Underground
Production size: Small
Development status: Past Producer
Last production ended: 1968

Geology

Host rock:Portage Lake Volcanics
Host type:Basalt
Structure:Amygdaloidal flow top
Alteration processes:Oxidized and bleached

References

MRDSW060045
DEP10082610
Reference{Deposit:: WEEGE, R.J., AND POLLACK, J.P., 1971, RECENT DEVELOPMENTS IN THE NATIVE COPPER DISTRICT OF MICHIGAN: IN W.S. WHITE, (EDITOR) GUIDEBOOK FOR FIELD CONFERENCE, MICHIGAN COPPER DISTRICT, SEPT. 30-OCT. 2, 1971, SOC. ECON. GEOL., P. 19-43.}{Deposit:: WHITE, W.S., 1968, THE NATIVE COPPER DEPOSITS OF NORTHERN MICHIGAN: IN J.D. RIDGE (EDITOR) ORE DEPOSITS OF THE UNITED STATES 1933-1967 (GRATON-SALES); AM. INSTIT. MIN. METALL. PETROL. ENG., V. 1, P. 303-325.}{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:: WEEGE AND POLLACK, 1971; WHITE, 1968}
ReporterNicholson, Suzanne, Sutphin, D.M., Mason Jr., G.T.