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Ships within 48 hours · Estimated delivery Aug 28 - Sep 2
Origin: Brazil
Origin: Australia
It features orangey feldspar and greenish beryl on this interesting and showy combination of material
60 g was found by Pete Meyers on May 18
Size: 29x25mm
Biotite Mica Book | Black Crystal | 55.6 Grams | Ontario, Canada | SO24 Amphibole Origin: BrazilThis is a sharp, 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
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