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Tourmaline & Lepidolite

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MGR632117

Tourmaline & Lepidolite

Description Tabs

Description
Locality: 
Aracuai, Minas Gerais, Brazil
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.4 × 4.4 × 2.5 cm
Description

A very translucent, lustrous, emerald green, "T"-formed assemble of tourmaline in combination with light lepidolithe. Fantastic assemble! The horizontal crystal is also end-pointed! The specimen is from an old discovery - the old label tells us that the specimen was acquired in 1975 for 2200 Schilling, that was really much money 43 years ago! The specimen is well developed and complete all around, no significant damages to report.

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