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Quartz Psm Gypsum

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PDM863758

Quartz Psm Gypsum

Pseudomorph

Description Tabs

Description
Locality: 
Molina de Segura, Murcia, Spain
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.2 × 2.9 × 1 cm
Description

Interesting pseudomorph of cryptocrystalline quartz replacing a group of twinned gypsum crystals. Fluoresces whitish yellow under long ultraviolet illumination.

This undamaged, floater specimen, was self-collected in 2011.

Mineral Data
What's on the rock

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Gypsum

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

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