Pyrargyrite and Achroite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
5.85
2.90-3.40
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Brittle
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
Distinct on {10 1 1}, imperfect on {01 1 2}
Not Available
Mohs Hardness
2.5-3
7-7.5
Chemical Composition
Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Pyrargyrite and Achroite Chemical Formula
While comparing Pyrargyrite and Achroite 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 Pyrargyrite and Achroite chemical formula.
- Chemical formula of Pyrargyrite- Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Achroite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Pyrargyrite and Achroite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyrargyrite and Achroite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrargyrite and Achroite Optical Properties during the identification of gemstone. Specific gravity of Pyrargyrite is 2.90-3.40 whereas that of Achroite is 2.90-3.40.