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Ferberite & Siderite

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CPM600162

Ferberite & Siderite

Description Tabs

Description
Locality: 
Panasqueira Mines, Covilhã, Castelo Branco District, Portugal
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 5.5 × 3.4 cm
Description

This is the Ferberite with the brightest I know. Copies like this are very hard to get. The habit of crystals is excellent. The aesthetics and beauty of this floating specimen are unbeatable. Finding copies of this quality are coincidences. Exceptional top quality. Collected 2005

Mineral Data
What's on the rock

Ferberite

Formula: 
FeWO4
Strunz: 
4.DB.30
Crystal System: 
Monoclinic
Hardness: 
4.0 - 4.5
Type Locality: 
Niña Mine, Sierra Almagrera, Cuevas del Almanzora (Cuevas de Vera), Almería, Andalusia, Spain

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White