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Brizziite & Mopungite

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SKY197240

Brizziite & Mopungite

Rare Mineral-Classic locality
Type Locality

Description Tabs

Description
Locality: 
Le Cetine di Cotorniano Mine, Chiusdino, Siena Province, Tuscany, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.5 × 0.8 cm
Description

Brizziite is a very rare antimony mineral only known worldwide from two relatively close localities in Tuscany, Pereta and Le Cetine mines. This one comes from Le Cetine which is the type locality. It occurs in this specimen as pinkish aggregates of very small crystals associated to white mopungite, (another Sb rare mineral, third photo) and a honey yellow unknown mineral.

Mineral Data
What's on the rock

Brizziite

Formula: 
NaSb5+O3
Strunz: 
4.CB.05
Crystal System: 
Trigonal
Hardness: 
2.5
Streak: 
White
Type Locality: 
Le Cetine di Cotorniano Mine (Le Cetine Mine; Cetine Mine; Rosia), Chiusdino, Siena Province, Tuscany, Italy

Mopungite

Formula: 
Na[Sb5+(OH)6]
Strunz: 
4.FC.15
Crystal System: 
Tetragonal
Hardness: 
3.0
Type Locality: 
Green prospect, Lake District, Churchill Co., Nevada, USA

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