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Rock Crystal & Schorl

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SKI637429

Rock Crystal & Schorl

Description Tabs

Description
Locality: 
Brazil
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.5 × 0.2 cm
Description

A polished slice of a transparent rock crystal with needle-like inclusions of black schorl from Brazil. Out of a german tourmaline collection. Comes with a well documented handwritten collection card including a pencile drawing of the specimen. Acquired in June 1989.

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

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