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Charlesite

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ESM804961

Charlesite

Description Tabs

Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1 × 0.8 × 0.6 cm
Description

Lustrous yellow charlesite crystals

Mineral Data
What's on the rock

Charlesite

Formula: 
Ca6(Al,Si)2(SO4)2[B(OH)4](OH,O)12·26H2O
Strunz: 
7.DG.15
Hardness: 
2.5
Streak: 
White
Type Locality: 
Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA