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Quartz With Galena & Fluorite

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GND75676

Quartz With Galena & Fluorite

Description Tabs

Description
Locality: 
Wheal Mary Ann, Menheniot, Cornwall, United Kingdom
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.8 × 4.5 × 2.6 cm
Description

An interesting locality specimen from this old Cornish mine comprising milky quartz crystals over white fluorite with a small partial galena crystal to one side. The galena shows some surface alteration. No damage.

Mineral Data
What's on the rock

Quartz

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

Galena

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

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
Gondwana Minerals