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Osumilite & Mullite

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HCH664557

Osumilite & Mullite

Description Tabs

Description
Locality: 
Nickenicher Weinberg, Nickenich, Andernach, Mayen-Koblenz, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3 × 2 cm
Largest Crystal: 
0.05cm
Description

Nice blue aggregates of tabulare Osumilithe-crystals in parageneses of white sprays of Mullite are sitting on Lava.

Mineral Data
What's on the rock

Osumilite

Formula: 
(K,Na)(Fe2+,Mg)2(Al,Fe3+)3(Si,Al)12O30
Strunz: 
9.CM.05
Hardness: 
5.0 - 6.0
Colour: 
Blue
Type Locality: 
Sakkabira, Osumi Peninsula, Kagoshima Prefecture, Kyushu Region, Japan

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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