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Schorl & Feldspar Group

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MGR910923

Schorl & Feldspar Group

Description Tabs

Description
Locality: 
Ameib Farm 60, Usakos, Karibib, Erongo Region, Namibia
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
13.1 × 8.4 × 4.4 cm
Description

Nice combination of a feldspar crystal with numerous etched schorl crystals on top. The schorl are lustrous and in fine condition.

Mineral Data
What's on the rock

Schorl

Formula: 
Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Strunz: 
9.CK.05
Hardness: 
7.0