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Gypsum

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PJM93196

Gypsum

Ex J & S Mommers Collection

Description Tabs

Description
Locality: 
Chinkapook Lake, Towan Plains Reserve, Chinkapook, Swan Hill, Victoria, Australia
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.3 × 4 × 2.6 cm
Description

A gemmy cluster of light orange gypsum crystals has formed over a twig that has blown in to the saline lake at Chinkapook. The orange colour is due to inclusion of iron rich clays that occur in the area.

Older specimen collected in 1983

Mineral Data
What's on the rock

Gypsum

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

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