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Cuspidine & Dorrite

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ESM637306

Cuspidine & Dorrite

Description Tabs

Description
Locality: 
Bellerberg, Ettringen, Eifel Mountains, Rhineland-Palatinate, Germany
Class: 
Combination
Size Range: 
Micromount (under 1cm)
Size: 
0.1 × 0.2 × 0.1 cm
Description

Colourless cuspidine crystal with small brown grains of dorrite mounted on a stick

Mineral Data
What's on the rock

Cuspidine

Formula: 
Ca4(Si2O7)(F,OH)2
Strunz: 
9.BE.17
Hardness: 
5.0 - 6.0
Streak: 
White
Type Locality: 
Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy

Dorrite

Formula: 
Ca4(Mg3Fe3+9)O4(Si3Al8Fe3+O36)
Strunz: 
9.DH.40
Crystal System: 
Triclinic
Hardness: 
5.5
Type Locality: 
Durham Ranch, Reno Junction, Campbell Co., Wyoming, USA