Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Quartz Epimorphs Psm Fluorite With Goethite Psm Psm Siderite

Views:
Watches:
PCZ540086

Quartz Epimorphs Psm Fluorite With Goethite Psm Psm Siderite

Pseudomorph

Description Tabs

Description
Locality: 
Rampgill Mine, Nenthead, Cumbria, United Kingdom
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 4 × 2.2 cm
Description

A thin crust of sparkling white quartz in the shape of intergrown cubic fluorite (up to 2.3 cm on an edge) crystals which have since been dissolved out. Scattered over this are lustrous black goethite pseudomorphs after siderite. 
Two pseudomorphs for the price. Very interesting, unusual and hard to come by material.
 

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

Goethite

Formula: 
α-Fe3+O(OH)
Strunz: 
4.00.
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 5.5
Type Locality: 
Hollertszug Mine (Hollerter Zug Mine), Dermbach, Herdorf, Siegerland, Rhineland-Palatinate, Germany

Siderite

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