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Tourmaline Var Schorl

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SYA849845

Tourmaline Var Schorl

German Antarctica expedition GANOVEX I in 1979/80.
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Description Tabs

Description
Locality: 
Lillie Marleen Camp, Everett Range, Victoria Land, Eastern Antarctica, Antarctica
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3.5 × 2.5 cm
Largest Crystal: 
2.50cm
Description

Black lustrous tourmaline, variety schorl crystals in Admiralty granite matrix

This specimen was found during the first german antarctica expedition GANOVEX I 1979 / 80.

Rare from this locality !

From the mineralogist of this expedition - Dipl. Min. Ulrich Vetter, Hannover

Mineral Data
What's on the rock

Tourmaline

Formula: 
A(D3)G6(T6O18)(BO3)3X3Z
Crystal System: 
Trigonal
Hardness: 
7

Schorl

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

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