Anorthite and Childrenite Physical Properties

Anorthite

Childrenite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.773.06-3.25

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven

1.6 Cleavage

Perfect [001] good [010] poor [110]

Poor/indistinct on {100}

1.7 Mohs Hardness

6-6.54.5-5

2 10

1.8 Chemical Composition

CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

(Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)

Anorthite and Childrenite Chemical Formula

While comparing Anorthite and Childrenite 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 Childrenite chemical formula.

Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Childrenite- (Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)

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Anorthite and Childrenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anorthite and Childrenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anorthite and Childrenite Optical Properties during the identification of gemstone. Specific gravity of Anorthite is 3.06-3.25 whereas that of Childrenite is 3.06-3.25.