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Fersmite & Allanite-(Ce)

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SER557945

Fersmite & Allanite-(Ce)

Description Tabs

Description
Locality: 
Alpe Rosso, Vigezzo Valley, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.9 × 3.5 × 2.1 cm
Description

A good, multi coloured fersmite crystal on albite with, in another vug, a double terminated, bi-coloured allanite-(Ce) crystal on albite; self collected October 2002

Mineral Data
What's on the rock

Fersmite

Formula: 
(Ca,Y)(Nb,Ta,Ti)2(O,OH)6
Strunz: 
4.DG.05
Hardness: 
4.0 - 4.5
Type Locality: 
Vein No. 37A, Buldym Lake, Vishnevye Mts (Vishnyovye; Cherry), Chelyabinsk Oblast', Southern Urals, Urals Region, Russia...

Allanite-(Ce)

Formula: 
{CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05b
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0
Type Locality: 
Qáqarssuatsiaq, Aluk Island, Kap Farvel, Kujalleq, Greenland
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