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Anorthite
Anorthite

Creedite
Creedite



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Anorthite
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Creedite

Anorthite and Creedite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.772.70
Amber
1 7.18
1.5 Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.6 Cleavage
Perfect [001] good [010] poor [110]
Perfect on {100}
1.7 Mohs Hardness
6-6.54.5
Amber
2 10
1.8 Chemical Composition
CaAl 2Si 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)
Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Anorthite and Creedite Chemical Formula

While comparing Anorthite and Creedite 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 Anorthite and Creedite chemical formula.

  • Chemical formula of Anorthite- CaAl 2Si 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Anorthite and Creedite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anorthite and Creedite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anorthite and Creedite Optical Properties during the identification of gemstone. Specific gravity of Anorthite is 2.70 whereas that of Creedite is 2.70.