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Osumilite-(Mg) & Mullite

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ZLT834978

Osumilite-(Mg) & Mullite

Description Tabs

Description
Locality: 
Nickenicher Weinberg, Nickenich, Andernach, Mayen-Koblenz, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.2 × 2.5 × 1.7 cm
Description

Tabular crystal of dark blue  osumilite-(Mg) with white mullite in a vug of a xenolith.( FOV 5,8 mm)

Mineral Data
What's on the rock

Osumilite-(Mg)

Formula: 
KMg2Al3(Al2Si10)O30
Strunz: 
9.CM.05
Hardness: 
5.0 - 6.0
Type Locality: 
Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany

Mullite

Formula: 
Al4+2xSi2-2xO10-x
Strunz: 
9.AF.20
Crystal System: 
Orthorhombic
Hardness: 
6.0 - 7.0
Type Locality: 
Seabank Villa, Isle of Mull, Strathclyde (Argyllshire), Scotland, UK

Seller Information

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