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Osumilite-(Mg)

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ZLT827989

Osumilite-(Mg)

Type Locality

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 × 1.5 × 1 cm
Description

Strong dichroitic crystal of osumilite-(Mg) with dark blue colour in direction of C-axis and yellow at other axis. The stong difference is only visible under special light conditions. FOV 1.3 mm. From the 1990´ s.

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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