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Chevkinite-(Ce)

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PDM597732

Chevkinite-(Ce)

With Antique Label

Description Tabs

Description
Locality: 
Ambatofotsikely Pegmatite, Betsohana, Mandoto, Vakinankaratra, Madagascar
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.1 × 2.7 × 2.1 cm
Description

Aggregate of brownish black crystals of chevkinite-(Ce) with resinous to waxy lustre on fracture surfaces.

Ex. Ennio Contarini (IT) #563. The specimen has two old original labels: one from Roberto Palumbo (Roma) from mid 1900’s, and an older one from “Les Fils D’Emile Deyrolle. According to Wilson, W.E (2017) “Mineralogical Record Biographical Archive”, this old label dates back before 1937.

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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