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Poldervaartite

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MGR703073

Poldervaartite

Description Tabs

Description
Locality: 
NChwaning Mines, Kuruman, Northern Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.9 × 4.4 × 2.9 cm
Description

A group of botryoidal spheres of poldervaartite attractively set on dark matrix. Looks fine in various positions. A nice and aesthetic sample from this famous classic locality.

Mineral Data
What's on the rock

Poldervaartite

Formula: 
CaCa[SiO3(OH)](OH)
Strunz: 
9.AF.90
Crystal System: 
Orthorhombic
Hardness: 
5.0
Streak: 
white
Type Locality: 
Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese field, Northern Cape Province, South Africa...