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Brownmillerite

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CSL116397

Brownmillerite

Rare Mineral

Description Tabs

Description
Locality: 
Emmelberg, Üdersdorf, Daun, Eifel, Rhineland-Palatinate, Germany
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.2 × 0.7 cm
Description

Rare Ca-Al oxide mineral brownmillerite, forms tiny, brown -black tabular crystal fragments and it's aggregates in metamorphosed limestone xenolite.

Mineral Data
What's on the rock

Brownmillerite

Formula: 
Ca2(Al,Fe3+)2O5
Strunz: 
4.AC.10
Crystal System: 
Orthorhombic
Hardness: 
0.0
Type Locality: 
Mayener Feld, Southern lava flow, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany
Loranth Minerals

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