Apophyllite and Gypsum Physical Properties
Tenacity
Not Available
Flexible
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.30-2.50
2.20-2.40
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009)
Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Perfect on (001)
Perfect on {010}, distinct on {100}
Chemical Composition
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
Apophyllite and Gypsum Chemical Formula
While comparing Apophyllite and Gypsum 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 Apophyllite and Gypsum chemical formula.
- Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
- Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
Apophyllite and Gypsum Specific Gravity
Another important criteria for qualitative analysis of gemstones is Apophyllite and Gypsum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite and Gypsum Optical Properties during the identification of gemstone. Specific gravity of Apophyllite is 2.20-2.40 whereas that of Gypsum is 2.20-2.40.