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Schorl & Quartz

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ESM789875

Schorl & Quartz

Description Tabs

Description
Locality: 
Erongo Mountains, Karibib, Erongo Region, Namibia
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
14 × 12 × 9 cm
Description

Intergrown black schorl crystals with hundreds of clear small quartz crystals

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White