Central #2 Mine, Central, Keweenaw County, Michigan, USA

6.5 x 4.9 x 2.8 cm
2.6 x 1.9 x 1.1 in

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Ex. A. E. Seaman Mineral Museum

The crystals on this specimen are for the most part elongated spinel twins. The crystals have grown in an aborescent fashion which is charecteristic of the fissure mines in Keweenaw County. On one side of the specimen, the crystals have grown in a V arrangment.