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Galena
Sulphide group
Formule chimique :
PbS
Système cristallin :
Cubic
Etymologie :
From the Latin galena meaning lead smelting slag.
Dureté :
2.5 – 2.7
Densité :
7.4 – 7.6
Propriétés physiques :
Metallic sheen. Lead grey colour. Uneven breakage. Dust and greenish to grey line. Perfect cleavage (001).
Propriétés chimiques :
Oxidises very easily, mainly to cerussite and anglesite.
Formule chimique :
PbS
Habitus :
In crystals derived from the cube or cubo-octahedron. Common macle according to (111).
Gîtologie :
Ubiquitous mineral
Determination :
The determination is relatively easy because of the metallic luster, the perfect cleavage and the high density of the galena.
Utilisation :
Main lead ore.
Galena is found in limestones, dolomites, mineralised hydrothermal seams and contact metamorphic rocks throughout the world.
(1 votes, average: 7.00 out of 10)
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