Calcite in the A. E. Seaman Mineral Museum

Michigan Technological University

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Calcite crystals (3.5 x 5.5 cm) with copper inclusions.
Quincy mine, Houghton County, Michigan.
Donald C. Gabriel collection #1159.
George W. Robinson photo.

Calcite crystal (2.4 cm) with copper inclusions.
Quincy mine, Houghton County, Michigan.
John T. Reeder collection #277.
Debra Wilson photo.

Twinned calcite crystal (twin is 6 cm across)
with copper inclusions.
Quincy mine, Houghton County, Michigan.
L. L. Hubbard Collection #184.
Ron Bentley photo.

Calcite crystals (12.5 cm tall)
with copper inclusions
Quincy mine, Houghton County, Michigan.
John T. Reeder collection #1705.
Ron Bentley photo.

Calcite crystals (8.5 cm tall)
with copper inclusions.
John T. Reeder collection #320.
Franklin mine, Houghton County, Michigan.
Ron Bentley photo.

Twinned calcite crystals (4.5 cm wide)
with copper inclusions.
John T. Reeder collection #389.
John A. Jaszczak photo.

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