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The weight and dimensions of the cubes are as follows:
it still shows the beautiful pallasite structure it is famous for and will also react strongly to a magnet
Dimensions: 110x101x25 mm / 4
9 x 79 x 9
Bead Size: 3 to 5
Biotite Mica Book | Black Crystal | 68 Grams | Ontario, Canada | SO24 Druzy The weight and dimensions ofThis 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.
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