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The specimen is made up of two joined complete mica crystals with all crystal faces and terminations
other deposits are found in countries such as Russia
000+ species are placed
Color: Neon Blue
Biotite Mica Book | Black Crystal | 55.6 Grams | Ontario, Canada | SO24 Amphibole The specimen is made upThis is a sharp, beautiful, black Biotite crystal book from the Calcite Vein Dikes of the Grenville Geological Province Ontario, Canada. This specimen is a great example of both the classic crystal shape and attractive dark coloration. 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
