Gypsum and Herderite Physical Properties
Tenacity
Flexible
Not Available
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.20-2.40
2.90-3.02
Fracture
Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Perfect on {010}, distinct on {100}
Indistinct on {110}
Chemical Composition
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
CaBePO 4(F,OH)Ulrich Henn and Claudio C.
Gypsum and Herderite Chemical Formula
While comparing Gypsum and Herderite 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 Gypsum and Herderite chemical formula.
- Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
- Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.
Gypsum and Herderite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gypsum and Herderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gypsum and Herderite Optical Properties during the identification of gemstone. Specific gravity of Gypsum is 2.90-3.02 whereas that of Herderite is 2.90-3.02.