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Name: Olivine Volcanic Bomb
85 Grams TW)
Weight: 64 Grams / 2
Product ID: TZIM6821
This is a fantastic shatter cone from Germany weighing 78
Biotite Mica Book | Black Crystal | 46.8 Grams | Ontario, Canada | SO24 Celestite Name: Olivine Volcanic BombThis 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
