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Almandine & Sillimanite

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TPX851885

Almandine & Sillimanite

Classic Locality

Description Tabs

Description
Locality: 
El Hoyazo, Níjar, Almería, Andalusia, Spain
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.7 × 3.6 × 3.1 cm
Weight: 
59.00gr
Description

Very interesting sample of trapezohedral garnets up accrued on crater bottom as result of almandine-rich dacite weathering. The matrix of this piece consist in fibrous masses of Sillimanite with blue Cordierite and black laminar Biotite.

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

Sillimanite

Formula: 
Al2(SiO4)O
Strunz: 
9.AF.05
Crystal System: 
Orthorhombic
Hardness: 
6.5 - 7.5
Streak: 
white
Type Locality: 
Chester, Middlesex Co., Connecticut, USA

Seller Information

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