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Tephroite

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SHS49432

Tephroite

ex. Dr. Krantz (Bonn/Germany)

Description Tabs

Description
Locality: 
Kurokawa Mine, Kiryu City, Gunma Prefecture, Honshu Island, Japan
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.8 × 6.6 × 5.3 cm
Description

Piece of nearly massiv tephroite

Mineral Data
What's on the rock

Tephroite

Formula: 
Mn2+2SiO4
Strunz: 
9.AC.05
Crystal System: 
Orthorhombic Forms short prismatic crystals.
Hardness: 
6.0
Streak: 
Pale gray
Type Locality: 
Sterling Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA