Weight:  35

This is a rare and fantastic 3

Bead Size: 2 to 4

Dimensions: 67x58x33 mm / 2

shape and color of the specimen we send may vary

Biotite Mica Book | Black Crystal | 71 Grams | Ontario, Canada | SO24 925 silver Weight: 35This 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.