Biotite Mica Book | Black Crystal | 46.8 Grams | Ontario, Canada | SO24 Celestite Its dimensions are 54x43x19 mm

Its dimensions are 54x43x19 mm

Name: Olivine Volcanic Bomb

Weight: 64 Grams / 2

Sphalerite is a mineral that typically occurs in hydrothermal ore veins associated with other minerals such as galena

This is a fantastic shatter cone from Germany weighing 78

Biotite Mica Book | Black Crystal | 46.8 Grams | Ontario, Canada | SO24 Celestite Its dimensions are 54x43x19 mmThis 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