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Rock Crystal & Schorl

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MGR752231

Rock Crystal & Schorl

Description Tabs

Description
Locality: 
Innerer Knorrkogel - Schlaten Glacier, Gschlöss Valley, East Tyrol, Carinthia, Austria
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.6 × 3.9 × 3.4 cm
Description

Although schorl is very common for international standards - for Alps free-standing crystals from alpine clefts are an out-standing rarity. These crystals are all free-standing, glossy and most are even end-pointed. In the center you can see a razor-sharp terminated, highly lustrous and water-clear rock crystal with inter-grown schorl crystals. Really a gret alpine rarity from very rare and uncommon locality and in excellent condition damage-wise.

Mineral Data
What's on the rock

Rock Crystal

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Formula: 
Hardness: 
0.0

Schorl

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