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Schorl & Quartz

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CLB184864

Schorl & Quartz

Classic Locality

Description Tabs

Description
Locality: 
Erongo Mountains, Karibib, Erongo Region, Namibia
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 4.3 × 3.2 cm
Largest Crystal: 
6.00cm
Description

Lustrous black schorl tourmaline with fibrous tip, cross-connected to a grayish-white, double-terminated(parallel-twinned?) quartz crystal with little schorl-'needles'. A very interesting and showy specimen.

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

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