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Elpasolite & Gypsum

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ESM841524

Elpasolite & Gypsum

Rare Mineral

Description Tabs

Description
Locality: 
Le Cetine di Cotorniano Mine, Chiusdino, Siena Province, Tuscany, Italy
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2 × 2 cm
Description

Yellow elpasolite between clear gypsum crystals  ( For original close-up photo contact us )

Mineral Data
What's on the rock

Elpasolite

Formula: 
NaK2[AlF6]
Strunz: 
3.CB.15
Hardness: 
2.5
Streak: 
White
Type Locality: 
St Peters Dome, Cheyenne District (St. Peters Dome District), El Paso Co., Colorado, USA

Gypsum

Formula: 
CaSO4·2H2O
Strunz: 
7.CD.40
Hardness: 
2.0
Streak: 
White.