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Osumilite-(Mg)

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RSL549782

Osumilite-(Mg)

Analysed

Description Tabs

Description
Locality: 
Caspar Quarry, Bellerberg, Ettringen, Eifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.8 × 1.7 cm
Largest Crystal: 
0.15cm
Description

In this micromineral we can observe two different forms of the osumilite-(Mg). One of them, classic, shows a hexagonal shape very rich in faces, with pyramidal small faces and truncated by pinacoid. We have analyzed both and results show that orange ones are rich in iron and with some Na. It is coherent with analyzed specimens from other localities.

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
Analysis
Analysis Report - only: Osumilite-(Mg)
Analysis Report - only: Osumilite-(Mg)