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Fluorcalcioroméite

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CSL188841

Fluorcalcioroméite

IMA2012-093
New Mineral type

Description Tabs

Description
Locality: 
Starlera Valley, Ferrera Valley, Grisons, Switzerland
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2.1 × 1.3 cm
Description

Rich piece of fluorcalcioroméite, a fairly new mineral of roméite group. It occurs as orange octahedrons in association with bladed tilasite and calcite on mannagese ore matrix

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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