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Sulphur & Calcite Psm Aragonite

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PDM612291

Sulphur & Calcite Psm Aragonite

Pseudomorph

Description Tabs

Description
Locality: 
Gibellina Mine, Racalmuto, Agrigento Province, Sicily, Italy
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.5 × 7.1 × 5.4 cm
Largest Crystal: 
3.90cm
Description

Group of twinned pseudohexagonal crystals of aragonite that have been completely replaced by dark yellow sulphur and transparent calcite. Intense fluorescence under short and long UV waves (last 2 pictures).

Ex. Manfred Fabig #799, obtained from Lothar Otter on sept/29/1968.

Mineral Data
What's on the rock

Sulphur

Formula: 
S8
Strunz: 
1.CC.05
Crystal System: 
Orthorhombic
Hardness: 
1.5 - 2.5

Calcite

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

Aragonite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.15
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Type Locality: 
Gallo river, Molina de Aragón, Guadalajara, Castile-La Mancha, Spain

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