Caledonite and Anorthite Physical Properties

Caledonite

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

5.6-5.762.77

1 7.18

1.5 Fracture

Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

[001] perfect; [100] distinct

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

1.7 Mohs Hardness

2.5-36-6.5

2 10

1.8 Chemical Composition

Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)

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

Caledonite and Anorthite Chemical Formula

While comparing Caledonite 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 Caledonite and Anorthite chemical formula.

Chemical formula of Caledonite- Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Caledonite and Anorthite Specific Gravity

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