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Calcite & Gypsum

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Calcite & Gypsum

Description Tabs

Description
Locality: 
Hammam-Zriba Mine, Zriba-Village, Zaghouan Governorate, Tunisia
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
6.2 × 7.3 × 4.2 cm
Largest Crystal: 
4.70cm
Description

Reddish, lustrous, scalenohedral calcite crystals up to 4.7 cm tall on matrix from the Hammam-Zriba Mine in Tunisia. The calcite crystals are overgrown with white, platy, lustrous gypsum crystals. A nice and aesthetic, relatively unusual combination from a rather rare locality in Tunisia.

Mineral Data
What's on the rock

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Gypsum

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

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