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Garnet Var Eclogite & Chromium Diopside

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MGR938579

Garnet Var Eclogite & Chromium Diopside

Rare Mineral

Description Tabs

Description
Locality: 
Gusdal Olivine Pit, Almklovdalen, Vanylven, Møre og Romsdal, Norway
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 4.6 × 0.1 cm
Description

A high P/T metamorphic rock composed of more than 75% vol. garnet (often pyrope or Mg-rich almandine) and omphacite (Na-Ca-Al-Mg clinopyroxene). Both must be present and neither component more than 75% vol., a very rare mineral, found only at around 5 loclities world-wide. The specimen is a thin slice, photographed with minor backlight - the eclogite seems to glow in incredible rich color.

Mineral Data
What's on the rock

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