Gahnite and Anorthite Physical Properties

Gahnite

Anorthite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.00-4.622.77

1 7.18

1.5 Fracture

Conchoidal, Uneven

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

Indistinct parting on [111]

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

1.7 Mohs Hardness

7.5-86-6.5

2 10

1.8 Chemical Composition

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Gahnite and Anorthite Chemical Formula

While comparing Gahnite 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 Gahnite and Anorthite chemical formula.

Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Blue Gemstones

Gahnite Vs Indicolite Blue Tourmaline

Gahnite Vs Howlite

Gahnite Vs Hydrogrossular

Gahnite and Anorthite Specific Gravity

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