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Proto-anthophyllite

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UVM704921

Proto-anthophyllite

Type Locality

Description Tabs

Description
Locality: 
Takase Mine, Shingo-takase, Niimi City, Okayama, Honshu Island, Japan
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 1.7 × 1.3 cm
Description

Light colored blades of proto-anthophyllite in dark colored matrix.   A very rare amphibole, these specimens from the type locality were only ever recovered from drill core samples.   

Mineral Data
What's on the rock

Proto-anthophyllite

Formula: 
☐{Mg2}{Mg5}(Si8O22)(OH)2
Strunz: 
9.DD.05
Hardness: 
6.0 - 0.0
Streak: 
white
Type Locality: 
Takase mine, Shingo-takase, Niimi City, Okayama Prefecture, Chugoku Region, Honshu Island, Japan

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