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this etched part slice of the Muonionalusta Meteorite is a true marvel
Size: 10x5
6 Grams / 4
Kunzite gets its delicate color from trace amounts of manganese
The specimen is made up of a radiating mass of inter grown aragonite crystals
Biotite Mica Book | Black Crystal | 39 Grams | Ontario, Canada | SO24 Metal Label this etched part slice ofThis 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
