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Gypsum

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PCZ714371

Gypsum

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Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.6 × 3.6 × 2.1 cm
Description

A beautiful aggregate of water clear, colourless gypsum crystals set on an olmiite/manganous matrix. These crystals are highly transparent and colourless despite the pink tinge seen in the images. I was unable to eliminate the colour from the photographs and beleive it to be due to internal reflections from a small inclusion of the same colour at the base of the crystals. The colour is not present in real life. Lovely specimen from a less frequently offered gypsum locality.

 

Minor: 
Gaudefroyite
Minor: 
Olmiite
Condition
General: 
Good - locality specimen
Main Display: 
Good - see description
Lustre: 
Good
Mineral Data
What's on the rock

Gypsum

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

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$

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$15
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Start 11 Jun 18:00
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