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Tourmaline Cleavelandite & Lepidolite

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ESM732543

Tourmaline Cleavelandite & Lepidolite

Description Tabs

Description
Locality: 
Golconda Pegmatite, Governador Valadares, Minas Gerais, Brazil
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
17 × 8 × 5 cm
Description

Translucent green tourmaline crystals on white cleavelandite blades with lepidoclite crystals

Mineral Data
What's on the rock

Tourmaline

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

Cleavelandite

Variety Of: 

Albite

Formula: 
NaAlSi3O8
Strunz: 
9.FA.35
Hardness: 
6.0 - 6.5
Hardness: 
0.0

Lepidolite

Synonym Of: 

Mica Group

Formula: 
KLi2Al(Si4O10)(F,OH)2 to K(Li1.5Al1.5)(AlSi3O10)(F,OH)2
Group Parent: 
Mica
Hardness: 
2.5 - 3.5
Colour: 
Pink, light purple, light rose red
Streak: 
White