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Tourmaline & Lepidolite

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MGR816587

Tourmaline & Lepidolite

Description Tabs

Description
Locality: 
Laghman Province, Afghanistan
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
10.1 × 7.7 × 4.9 cm
Description

What a spectacular specimen - a huge tourmaline crystal with a royal blue, intense blue cap framed with lavender Lepidolite and even set on matrix. Rotated to the side you can see the color zoning below the dark blue cap - an area with light lavender color, then light cyan color, finally pale lavender. The specimen will come with all origin labels.

Mineral Data
What's on the rock

Tourmaline

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

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