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Chevkinite-(Ce)

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CHA771916

Chevkinite-(Ce)

Classic Locality

Description Tabs

Description
Locality: 
Água de Pau Volcano, São Miguel Island, Azores District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 1.3 × 1 cm
Description

specimen with some black crystals of chevkinite-Ce on matrix with associate cream colour aggregates of dalyite.

For value the dimension of the crystals I remenber you that the photos of my specimens are taken at only 20/40 enlargement!

Mineral Data
What's on the rock

Chevkinite-(Ce)

Formula: 
(Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8
Strunz: 
9.BE.70
Crystal System: 
Monoclinic
Hardness: 
5.0 - 5.5
Colour: 
black
Type Locality: 
Pit No. 17, Ilmen Natural Reserve, Ilmen Mts, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia...

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