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Bultfonteinite & Poldervaartite

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PJM82653

Bultfonteinite & Poldervaartite

Ex J & S Mommers Collection

Description Tabs

Description
Locality: 
Wessels Mine, Hotazel, Kalahari, Northern Cape Province, South Africa
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 2.1 × 1.9 cm
Description

Snow white bundles of accicular boltfonteinite on dark creme colour, doubly terminated poldervaartite crystals over a dark maganese matrix, this specimen has two display faces as all surfaces except for the point of attachment have good crystal coverage

Mineral Data
What's on the rock

Bultfonteinite

Formula: 
Ca2(HSiO4)F·H2O
Strunz: 
9.AG.80
Hardness: 
4.5
Streak: 
white
Type Locality: 
Bultfontein, Lejweleputswa District, Free State Province, South Africa

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...
Earthstones Australia

Seller Information

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All goods must be paid for prior to shipping, all bids are binding.