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Amesite

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GMN1154791

Description Tabs

Description
Locality: 
Saranovskii Mine, Saranovskaya, Gorozavodskii, Perm Krai, Russian Federation
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3 × 1 cm
Description

Numerous good prismatic triangular crystals and their  groups . This variety of amesite strongly changes its colour depending to light, like alexandrite: bluish-green under the daylight and purple to lilac under the electric light.

Mineral Data
What's on the rock

Amesite

Formula: 
Mg2Al(AlSiO5)(OH)4
Strunz: 
9.ED.15
Crystal System: 
Triclinic
Hardness: 
2.5 - 3.0
Type Locality: 
Chester Emery Mines, Chester, Hampden Co., Massachusetts, USA

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