Biotite Mica Book | Black Crystal | 50 Grams | Ontario, Canada | SO24 NWA 2965 for jewelry making or as

for jewelry making or as small gifts to those who are interested in meteoritics

The specimen looks incredible under a magnifying glass and is in very good condition

Dimensions: 39x31x17 mm / 1

8 Gr total)

Dimensions: 203x146x120 mm / 8x5

Biotite Mica Book | Black Crystal | 50 Grams | Ontario, Canada | SO24 NWA 2965 for jewelry making or asThis is a 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 plates or