Forsterite and Ettringite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Partially soluble in water
Durability
Not Available
Not Available
Specific Gravity
3.23-3.26
1.77
Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Not Available
Cleavage
Perfect on {010} imperfect on {100}
Perfect on {10 1 0}
Mohs Hardness
6.5-7
2-2.5
Chemical Composition
Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Forsterite and Ettringite Chemical Formula
While comparing Forsterite and Ettringite 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 Forsterite and Ettringite chemical formula.
- Chemical formula of Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Forsterite and Ettringite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Forsterite and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Forsterite and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Forsterite is 1.77 whereas that of Ettringite is 1.77.