Langbeinite and Anorthite Physical Properties

Langbeinite

Anorthite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Slowly dissolves in water

Not Available

1.5 Durability

Not Available

1.7 Specific Gravity

Not Available2.77

1 7.18

1.9 Fracture

Conchoidal, Brittle

Uneven, Uneven, Gems, Sixth Edition (2006)

1.11 Cleavage

None

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

1.13 Mohs Hardness

3.5-46-6.5

2 10

1.14 Chemical Composition

Not Available

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

Langbeinite and Anorthite Chemical Formula

While comparing Langbeinite 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 Langbeinite and Anorthite chemical formula.

Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Langbeinite and Anorthite Specific Gravity

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