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Garnet Var Eclogite & Chromian Diopside

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MGR961905

Garnet Var Eclogite & Chromian Diopside

Rare Mineral

Description Tabs

Description
Locality: 
Gusdal Olivine Pit, Almklovdalen, Vanylven, Møre og Romsdal, Norway
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.9 × 3.1 × 0.4 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

Chromian Diopside

Variety Of: 

Diopside

Formula: 
CaMgSi2O6
Strunz: 
9.DA.15
Hardness: 
5.5 - 6.5
Formula: 
(Ca,Cr)MgSi2O6
Hardness: 
0.0
Colour: 
Green