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Fluorite Var Antozonite & Coffinite

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TPX838401

Fluorite Var Antozonite & Coffinite

Radioactive

Description Tabs

Description
Locality: 
Peralonso Mine, Villar de Peralonso, Salamanca, Castile & León, Spain
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.8 × 4.2 × 2.8 cm
Weight: 
29.00gr
Description

Very interesting group of dark purple fluorite micro crystals with Coffinite and some secondary uranium minerals on matrix. A very particular characteristic of these pieces is that they have a very particular odor due to natural emanations of the fluor element.

Mineral Data
What's on the rock

Fluorite

Formula: 
CaF2
Strunz: 
3.AB.25
Crystal System: 
Isometric
Hardness: 
4.0
Streak: 
White
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Coffinite

Formula: 
(U4+,Th)(SiO4)1-x(OH)4x
Strunz: 
9.AD.30
Hardness: 
5.0 - 6.0
Type Locality: 
La Sal No. 2 Mine, Beaver Mesa, Mesa Co., Colorado, USA

Seller Information

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