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Roedderite & Fluoro-richterite

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SMM803339

Roedderite & Fluoro-richterite

Description Tabs

Description
Locality: 
Bellerberg, Ettringen, Eifel Mountains, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2 × 2 cm
Description

Scattered on the volcanic matrix, there are some crystals of roedderite, glassy and colorless with a dark crystalline "seed" inside. In some points of the matrix there are beautiful crossed prismatic crystals of bright yellow fluoro-richterite. Nice.

Boxed with Label
Mineral Data
What's on the rock

Roedderite

Formula: 
(Na,K)2(Mg,Fe)5Si12O30
Strunz: 
9.CM.05
Hardness: 
5.0 - 6.0
Type Locality: 
Indarch meteorite (Elizabethpol; Gindorcha; Glindorcha; Indarh; Indarkh; Schuscha; Suscha [NHM cat.]), Shusha, Naxçıvan District (Naxcivan; Nakhichevan), Azerbaijan

Fluoro-richterite

Formula: 
{Na}{CaNa}{Mg5}(Si8O22)(F,OH)2
Strunz: 
9.DE.20
Crystal System: 
Monoclinic
Hardness: 
5.0 - 6.0
Streak: 
white
Type Locality: 
Pit No. 97 (N97 Mine), Ilmen Natural Reserve, Ilmen Mts, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia...

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