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Osumilite-(Mg)

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ZLT203090

Osumilite-(Mg)

Type Locality

Description Tabs

Description
Locality: 
Caspar Quarry, Bellerberg, Ettringen, Eifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
Size Range: 
Thumbnail (1-3cm)
Size: 
0.8 × 2.5 × 2 cm
Description

Fraction of a xenolith showing a vug with fresh bicoloured osumilite-Mg crystals (due to a blue-yellow dichroism). Crystal size ~0.8 mm. From a 1995 find.

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

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