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Quartz Psm Fluorite & Pyrite

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RPL888066

Quartz Psm Fluorite & Pyrite

Pseudomorph

Description Tabs

Description
Locality: 
Wheal Jane, Kea, Cornwall, United Kingdom
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
8 × 11 × 5 cm
Largest Crystal: 
2.50cm
Weight: 
446.00gr
Description

A 5cm octahedral fluorite is replaced by a thin skin of quartz as an epimorph set on a matrix of quartz and pyrite, the upper surface is covered in clear quartz crystals up to 2.5cm in length which are themselves studded with pyrite crystals. All the main terminations are complete with only a few minor chips.

The floor of the epimorph hosts a later, second generation of quartz crystals to 0.8cm.  

Minor: 
Chalcopyrite
Condition
General: 
Excellent - locality specimen
Main Display: 
Excellent - see description
Mineral Data
What's on the rock

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
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

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5
Provenance

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