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Tourmaline Var Schorl

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SYA1048944

Tourmaline Var Schorl

German Antarctica Expedition GANOVEX I 1979/80

Description Tabs

Description
Locality: 
Lillie Marleen Camp, Everett Range, Victoria Land, Eastern Antarctica, Antarctica
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.2 × 1 cm
Description

Lustrous black tourmaline, variety schorl crystals in Admiralty granite.

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

Rare locality !

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

this expedition

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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