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and biotite
The blue shades of Sodalite are found intermingled with white Calcite
86x83x51mm
The quartz gets it blue color from ilemnite inclusions in llanite
Cobaltoan Calcite #23 Black Tourmaline and biotite91g 0. 201lbs 3. 21oz 2. 29" x 1. 52" x 1. 33" Cobaltoan Calcite also known as Cobalt Calcite, cobalto calcite, or cobaltocalcite. The physical properties of cobaltoan calcite are the same as those of calcite. It crystallizes in the hexagonal (trigonal) system, usually as rhombohedrons, scalenohedrons, and prisms. It has a Mohs hardness of 3. 0. It is an uncommon variety of Calcite that has been infused with small amounts of the accessory element
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