Charlesite and Anorthite Physical Properties

Charlesite

Anorthite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.792.77

1 7.18

1.5 Fracture

Irregular/uneven, Brittle, Metallic

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

Perfect on {10bar10}

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

1.7 Mohs Hardness

2.56-6.5

2 10

1.8 Chemical Composition

Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)

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

Charlesite and Anorthite Chemical Formula

While comparing Charlesite and Anorthite 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 Charlesite and Anorthite chemical formula.

Chemical formula of Charlesite- Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)
Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Charlesite and Anorthite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Charlesite and Anorthite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Charlesite and Anorthite Optical Properties during the identification of gemstone. Specific gravity of Charlesite is 2.77 whereas that of Anorthite is 2.77.