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Cummingtonite

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SYM188898

Cummingtonite

Rare Mineral

Description Tabs

Description
Locality: 
Te Aroha Station, Hokitika, West Coast, South Island, New Zealand
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 2.5 × 2.5 cm
Description

Brownish yellowish sprays of cummingtonite. 

Mineral Data
What's on the rock

Cummingtonite

Formula: 
☐{Mg2}{Mg5}(Si8O22)(OH)2
Strunz: 
9.DE.05
Crystal System: 
Monoclinic
Hardness: 
5.0 - 6.0
Streak: 
nd