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Calcite Fluorite Galena & Arsenopyrite

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PJM36621

Calcite Fluorite Galena & Arsenopyrite

Ex Jose Rees Collection

Description Tabs

Description
Locality: 
Tulloch Silver Mine, Rockvale, Clarke County, New South Wales, Australia
Size Range: 
Cabinet (10-18 cm)
Size: 
4 × 15.4 × 6 cm
Largest Crystal: 
3.00cm
Description

This specimen is from a remote mine operated by Snake Valley Minerals NL in the early 1970's. The area has been rehabilitated since.

This is a hefty specimen with the matrix being solid sphalerite/schalenblende. The specimen is covered with crystals on both sides. The main display face features micro arsenopyite crystal on matrix covered with calcite crystals to 3cm.

Amongst the calcite are pale blue to clear fluorite crystals to 1cm and the odd basic isolated galena cube to 2mm. The reverse side is covered with micro calcite and quartz crystals with isolated sphalerite and galena crystals.

Whilst this assemblage maybe common in many parts of the world it is an oddity in Australia.

 

Mineral Data
What's on the rock

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
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

Galena

Formula: 
PbS
Strunz: 
2.CD.10
Crystal System: 
Isometric
Hardness: 
2.5
Colour: 
Lead-grey
Streak: 
Lead-grey

Arsenopyrite

Formula: 
FeAsS
Strunz: 
2.EB.20
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0
Earthstones Australia

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