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Forsterite Enstatite & Chromium Diopside

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MNT768920

Forsterite Enstatite & Chromium Diopside

ex Staatliche Mineralienniederlage Freiberg (Saxony, GER), ex A. Gerstenberg
Classic Locality

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Description
Locality: 
Dreiser Weiher, Dreis, Eifel, Rhineland-Palatinate, Germany
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 4.7 × 3 cm
Description

Part of a so called "olivine bomb" with forsterite-rich olivine, enstatite and deep green grains of chromian diopside as components of ultramafic mantle xenoliths. Famous occurrence! XQC-9QW minID. Ex Andreas Gerstenberg collection.

Mineral Data
What's on the rock

Forsterite

Formula: 
Mg2SiO4
Strunz: 
9.AC.05
Crystal System: 
Orthorhombic
Hardness: 
7.0
Streak: 
White
Type Locality: 
Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy

Enstatite

Formula: 
MgSiO3
Group Parent: 
Orthopyroxene Subgroup
Strunz: 
9.DA.05
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
5.0 - 6.0

Chromium

Formula: 
Cr
Strunz: 
1.AE.05
Crystal System: 
Isometric
Hardness: 
9.0
Colour: 
White
Type Locality: 
Anduo Cr deposit, Amdo Co. (Anduo Co.), Nagchu Prefecture (Naqu Prefecture), Tibet Autonomous Region, China

Diopside

Formula: 
CaMgSi2O6
Group Parent: 
Clinopyroxene Subgroup
Strunz: 
9.DA.15
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.5
Streak: 
white

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Thank you for your interest in my offers! Payment is possible via Paypal, bank transfer or cash if you pick up the item(s) personally. Bank data will be provided after settling the auction/transaction(s) if needed.

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Best regards Roger

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