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Pollucite Tourmaline Var Achroite & Elbaite

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ESM614980

Pollucite Tourmaline Var Achroite & Elbaite

Type Locality

Description Tabs

Description
Locality: 
La Speranza, San Piero in Campo, Elba Island, Livorno Province, Tuscany, Italy
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
2.8 × 5 × 3.5 cm
Description

Colorless pollucite crystals with clear achroite crystals and minor elbaite crystals

Mineral Data
What's on the rock

Pollucite

Formula: 
(Cs,Na)2(Al2Si4O12)·2H2O
Strunz: 
9.GB.05
Hardness: 
6.5
Streak: 
white
Type Locality: 
La Speranza (Pisani's Quarry), San Piero in Campo, Campo nell'Elba, Elba Island, Livorno Province, Tuscany, Italy...

Tourmaline

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

Achroite

Variety Of: 

Tourmaline

Formula: 
A(D3)G6(T6O18)(BO3)3X3Z
Hardness: 
7
Hardness: 
0.0
Colour: 
Clear

Elbaite

Formula: 
Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Strunz: 
9.CK.05
Hardness: 
7.5
Streak: 
White
Type Locality: 
Fonte del Prete, San Piero in Campo, Campo nell'Elba, Elba Island, Livorno Province, Tuscany, Italy...