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Galena & Pyrite On Quartz

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BMM662941

Galena & Pyrite On Quartz

Description Tabs

Description
Locality: 
Krushev Dol Mine, Smolyan Oblast, Bulgaria
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
12.5 × 9.5 × 5.3 cm
Description

Needle quartz crystals with a hedgehog-shaped construction on a bright quartz matrix. The crystals are very transparent and partially covered with small, shiny pyrites. In addition, there are single silver-gray galena crystals on the quartz crystals. Undamaged – the bottom is from the rock, but also crystalized!

Mineral Data
What's on the rock

Galena

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

Pyrite

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

Quartz

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