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Franzinite

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SKY213917

Franzinite

Type locality-Rare Mineral
Classic Locality

Description Tabs

Description
Locality: 
Case Collina, Pitigliano, Grosseto Province, Tuscany, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 3 × 1.6 cm
Description

White hexagonal crystals of the very rare franzinite from the type locality and one of the few localities known worldwide.

Sharp franzinite crystals are a very sought after mineral !.

Mineral Data
What's on the rock

Franzinite

Formula: 
(Na,K)6Ca2(Al6Si6O24)(SO4)2·0.5H2O
Strunz: 
9.FB.05
Hardness: 
5.0
Streak: 
White
Type Locality: 
Case Collina (Toscopomici quarry), Pitigliano, Grosseto Province, Tuscany, Italy

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