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Tourmaline Var Schorl

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SYA1083166

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Description
Locality: 
Lillie Marleen Camp, Everett Range, Victoria Land, Eastern Antarctica, Antarctica
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 4 × 1.5 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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World 10 € < 500g
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