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Guenterblassite & Mg-analogue of Schüllerite

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HCH114148

Guenterblassite & Mg-analogue of Schüllerite

Type Locality

Description Tabs

Description
Locality: 
Rother Kopf, Roth, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2 × 1 cm
Largest Crystal: 
0.05cm
Description

A good sample with white and yellowish typical tabulare crystals of guenterblassite as aggregates near also tabulare brown crystals of a new Mg-analogene of schüllerite up to 0.5 mm large in parageneses of pyroxene, etc. on matrix. Found myself in last year.

Mineral Data
What's on the rock

Mg-analogue of Schüllerite

Synonym Of: 

Lileyite

Formula: 
Ba2(Na,Fe,Ca)3MgTi2(Si2O7)2O2F2
Strunz: 
9.BE.25
Hardness: 
3.0 - 4.0

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