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Tourmaline Var Schorl

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SYA871977

Tourmaline Var Schorl

German Antarctica Expedition GANOVEX I 1979/80.

Description Tabs

Description
Locality: 
Big Hole, Schroeders Spur, Daniells Peninsula, Victoria Land, Eastern Antarctica, Antarctica
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3 × 2.5 cm
Largest Crystal: 
2.00cm
Description

Lustrous black blocky schorl crystals in orthoclase/quartz matrix.

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

 

First time a specimen is offered on e-rocks from the Schroeders Spur locality.

Very limited number of these schorl specimens available.

 

Comes with a - copy - of the original label/paper of the mineralogist

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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