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Galena and Anhydrite Physical Properties


Anhydrite and Galena Physical Properties


Physical Properties

Tenacity
Brittle   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
6.23   
2.90-2.98   

Fracture
Subconchoidal, Brittle, Metallic   
Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal   

Cleavage
Cubic perfect on [001], parting on [111]   
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.   

Mohs Hardness
2.5-2.75   
3.5   

Chemical Composition
PbS   
CaSO 4Michael O’Donoghue , Gems, Sixth edition (2006) More from other references   

Optical Properties >>
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Galena and Anhydrite Chemical Formula

While comparing Galena and Anhydrite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Galena and Anhydrite chemical formula.

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Galena and Anhydrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Galena and Anhydrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Galena and Anhydrite Optical Properties during the identification of gemstone. Specific gravity of Galena is 2.90-2.98 whereas that of Anhydrite is 2.90-2.98.

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