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Nepheline & Andradite

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PDM690179

Nepheline & Andradite

Description Tabs

Description
Locality: 
Jebel Bou-Agrao, Tamazeght, Khénifra Province, Béni Mellal-Khénifra Region, Morocco
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 6 × 5 cm
Largest Crystal: 
1.40cm
Description

A representative specimen of prismatic nepheline crystals that reach 14 mm, of a pale cream colour and are associated with minor black andradite garnets.

Found in 1991, it is an Ex. J. Muizebelt specimen.

Mineral Data
What's on the rock

Nepheline

Formula: 
(Na,K)AlSiO4
Strunz: 
9.FA.05
Hardness: 
5.5 - 6.0
Type Locality: 
Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy

Andradite

Formula: 
Ca3Fe3+2(SiO4)3
Strunz: 
9.AD.25
Crystal System: 
Isometric
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Drammen, Buskerud, Norway

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