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Fersmite & Rutile Var Ilmenorutile

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SER647357

Fersmite & Rutile Var Ilmenorutile

Description Tabs

Description
Locality: 
Alpe Rosso, Orcesco, Druogno, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.5 × 1.5 cm
Description

A good, double terminated, bright yellow fersmite crystal on albitite with a large crystal of rutile var. ilmenorutile

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...

Rutile

Formula: 
TiO2
Strunz: 
4.DB.05
Crystal System: 
Tetragonal - Ditetragonal Dipyramidal
Hardness: 
6.0 - 6.5
Type Locality: 
Rutile locality, Horcajuelo de la Sierra, Madrid, Spain

Ilmenorutile

Variety Of: 

Rutile

Formula: 
TiO2
Strunz: 
4.DB.05
Hardness: 
6.0 - 6.5
Formula: 
Fex(Nb,Ta)2x·4Ti1-xO2
Crystal System: 
Tetragonal
Hardness: 
6.0 - 6.5
Colour: 
Black
Type Locality: 
Vein No. 140 (Selyankino village), Buldym Lake, Vishnevye Mts (Vishnyovye; Cherry), Chelyabinsk Oblast', Southern Urals, Urals Region, Russia...