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Siderite On Fluorite

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RPL895810

Siderite On Fluorite

Fluorescent

Description Tabs

Description
Locality: 
Hudeshope Head Mine, Middleton-in-Teesdale, County Durham, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
11 × 10 × 4 cm
Largest Crystal: 
4.00cm
Weight: 
568.00gr
Description

Purple fluorite cubes up to 4cm on edge, all are covered on two preferential sides with tan brown euhedral siderite. The smaller fluorites are free of damage but the largest crystal has a cleaved corner and there is some peripheral damage from extraction. The fluorite displays typical LW fluorescence to UV.

Mineral Data
What's on the rock

Siderite

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

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

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