Ettringite and Pyrite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Partially soluble in water
insoluble in water
Durability
Not Available
Not Available
Specific Gravity
1.77
5.00-5.20
Fracture
Not Available
Uneven, Conchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle
Cleavage
Perfect on {10 1 0}
Indistinct on {001}; partings on {011} and {111}
Mohs Hardness
2-2.5
6-6.5
Chemical Composition
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ettringite and Pyrite Chemical Formula
While comparing Ettringite and Pyrite 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 Ettringite and Pyrite chemical formula.
- Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ettringite and Pyrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ettringite and Pyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Pyrite Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 5.00-5.20 whereas that of Pyrite is 5.00-5.20.