Spessartine and Ettringite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Partially soluble in water
Durability
Not Available
Not Available
Specific Gravity
4.12-4.18
1.77
Fracture
ConchoidalArthur Thomas, Conchoidal, Brittle
Not Available
Cleavage
{???} Distinct
Perfect on {10 1 0}
Mohs Hardness
7-7.5
2-2.5
Chemical Composition
Mn 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Spessartine and Ettringite Chemical Formula
While comparing Spessartine 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 Spessartine and Ettringite chemical formula.
- Chemical formula of Spessartine- Mn 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Spessartine and Ettringite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Spessartine and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spessartine and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Spessartine is 1.77 whereas that of Ettringite is 1.77.