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Tourmaline Var Schorl

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MEX199516

Tourmaline Var Schorl

Classic Locality

Description Tabs

Description
Locality: 
Chesterfield, Hampshire County, Massachusetts, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.1 × 5.6 × 5.1 cm
Weight: 
193.00gr
Description

A nice old specimen with black schorl on pegmatite matrix. The specimen comes include older german label.

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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