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Tephroite

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SHS72792

Tephroite

Description Tabs

Description
Locality: 
Garpenberg Norra Mine, Garpenberg, Hedemora, Dalarna County, Sweden
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3.7 × 2.4 cm
Description

Tephroite in matrix

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
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