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Tamaite

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GFM1027834

Tamaite

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Description Tabs

Description
Locality: 
Hale Creek Mine, Trinity County, California, United States of America
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3 × 2.5 cm
Description

This Calcium-Manganese-Silicate forms light orange-brown tabular crystals to 2 mm, and several square centimeter crystal aggregates. Together with some Inesite on cavities in chert matrix. Old newly examined samples from the 1980s.

Mineral Data
What's on the rock

Tamaite

Formula: 
(Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112·21H2O
Strunz: 
9.EG.30
Crystal System: 
Monoclinic
Hardness: 
4.0
Streak: 
White
Type Locality: 
Shiromaru mine (Hakumaru mine), Okutama-cho, Nishi-Tama-gun, Tokyo Metropolis, Kanto Region, Honshu Island, Japan