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Harry Buryn
As the marcasite breaks down
This is a natural raw bi-color tourmaline crystal
Moldavite is a rare
Biotite Mica Book | Black Crystal | 45 Grams | Ontario, Canada | SO24 L4 Harry BurynThis 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
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