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Almandine & Tourmaline

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BMM1019697

Almandine & Tourmaline

Description Tabs

Description
Locality: 
San Piero in Campo, Elba, Livorno Province, Tuscany, Italy
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.2 × 7 × 4.2 cm
Description

Not often offered from this location: a piece consisting of red almandine crystals - some of which have very good, high-gloss crystal surfaces - and black schorl tourmaline with also some high-gloss crystal surfaces. There is also a mix of quartz, muscovite and feldspar. The piece comes from an old collection and was acquired in Munich in 1978. The old collection label is included.

Mineral Data
What's on the rock

Almandine

Formula: 
Fe2+3Al2(SiO4)3
Strunz: 
9.AD.25
Crystal System: 
Isometric
Hardness: 
7.0 - 7.5
Streak: 
White
Type Locality: 
Alabanda, Aydin Province, Aegean Region, Turkey

Tourmaline

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