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Biotite Mica Book | Black Crystals | 68.5 Grams | Ontario, Canada | SO24

Name: Biotite Mica

Specimen Size:  Large Cabinet-Sized

Dimensions:  121x35x7 mm / 4.8x1.4x0.3 inches

Weight:  68.5 Grams / 2.4 Ounces

Origin:  Ontario, Canada

This is a sharp, beautiful, black Biotite crystal book from the Calcite Vein-Dikes of the Grenville Geological Province Ontario, Canada. This biotite has classic crystal shape and attractive dark black coloration. This specimen is a great example of both,

Biotite is rarely considered a valuable mineral specimen, but it can accompany other minerals and compliment them. In Bancroft, Ontario Biotite forms large crystals with green apatite and hornblende. Single large plates or "books" of biotite can grow to considerable size and can make impressive mineral specimens.

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