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Fluorcalcioroméite

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GMN1001228

Fluorcalcioroméite

Type Locality

Description Tabs

Description
Locality: 
Starlera Valley, Ferrera Valley, Grisons, Switzerland
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.4 × 1 cm
Description

Very nice lustrous brownish octahedral crystals without matrix.

Rich specimen.

Mineral Data
What's on the rock

Fluorcalcioroméite

Formula: 
(Ca,Na)2Sb5+ 2O6(F,OH)
Hardness: 
5.5 - 0.0
Streak: 
White
Type Locality: 
Starlera Mine, Starlera Valley, Ferrera Valley, Hinterrhein Valley, Grischun (Grisons; Graubünden), Switzerland

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