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Chromian Clinochlore & Magnesiochromite

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PDM714052

Chromian Clinochlore & Magnesiochromite

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Description Tabs

Description
Locality: 
Inguijem, Zagora Province, Drâa-Tafilalet Region, Morocco
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.2 × 4.1 × 3.3 cm
Description

Here is a nice surprise, a self-collected specimen from a recent trip to Morocco. Pink foliated masses of chromian clinochlore with minor stichtite, filling up fractures in a strongly metamorphosed green-black magnesiochromite. As far as I know this chromian clinochlore (former known “kammererite”) is here recognized for the first time in Morocco. It has been analysed by SEM-EDS and XRD, and the analyses will be provided with the specimen.

Mineral Data
What's on the rock

Chromian Clinochlore

Variety Of: 

Clinochlore

Formula: 
(Mg,Fe2+)5Al(AlSi3O10)(OH)8
Strunz: 
9.EC.55
Hardness: 
2.0 - 2.5
Formula: 
Mg5(Al,Cr)2Si3O10(OH)8
Hardness: 
0.0

Magnesiochromite

Formula: 
Mg(Cr,Al,Fe)2O4
Strunz: 
4.BB.05
Hardness: 
5.5
Streak: 
Brown
Type Locality: 
Schwarzenberg District, Erzgebirge, Saxony, Germany

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