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Anhydrite
Anhydrite

Herderite
Herderite



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Anhydrite
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Herderite

Anhydrite and Herderite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.90-2.98
2.90-3.02
1.5 Fracture
Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.6 Cleavage
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
Indistinct on {110}
1.7 Mohs Hardness
3.5
5-5.5
1.8 Chemical Composition
CaSO 4Michael O’Donoghue , Gems, Sixth edition (2006) More from other references
CaBePO 4(F,OH)Ulrich Henn and Claudio C.

Anhydrite and Herderite Chemical Formula

While comparing Anhydrite 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 Anhydrite and Herderite chemical formula.

  • Chemical formula of Anhydrite- CaSO 4Michael O’Donoghue , Gems, Sixth edition (2006) More from other references
  • Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.

Anhydrite and Herderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anhydrite and Herderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anhydrite and Herderite Optical Properties during the identification of gemstone. Specific gravity of Anhydrite is 2.90-3.02 whereas that of Herderite is 2.90-3.02.