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Hematite Tourmaline & Muscovite

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NST630865

Hematite Tourmaline & Muscovite

Classic Locality

Description Tabs

Description
Locality: 
Bamble, Vestfold og Telemark, Norway
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 4.5 × 2.6 cm
Largest Crystal: 
2.00cm
Description

Hematite up to 2 cm and lustrous black tourmaline in muscovite matrix. Rare old time material from Norway.

Mineral Data
What's on the rock

Hematite

Formula: 
Fe2O3
Strunz: 
4.CB.05
Crystal System: 
Trigonal
Hardness: 
5.0 - 6.0

Tourmaline

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

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Streak: 
White