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Crichtonite

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CFL701420

Crichtonite

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Description
Locality: 
Mount Cervandone, Verbano Ossola Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3.5 × 2.3 cm
Weight: 
40.00gr
Description

Rich specimen of black crichtonite microcrystals on matrix, typical of the species.  Crichtonite is a very complex oxyde of rare elements such as Strontium, Ytrium, Uranium, Titanium and Vanadium.

Mineral Data
What's on the rock

Crichtonite

Formula: 
(Sr,La,Ce,Y)(Ti,Fe3+,Mn)21O38
Strunz: 
4.CC.40
Hardness: 
5.0 - 6.0
Colour: 
Black
Streak: 
Dark grey
Type Locality: 
St Christophe-en-Oisans, Bourg d'Oisans, Isère, Rhône-Alpes, France...

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