Moonstone and Austinite Physical Properties

Moonstone

Austinite

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Physical Properties

Tenacity

Brittle

Solubility

Easily soluble in cold dilute HCl

Durability

Specific Gravity

2.56-2.604.12

1 7.18

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Fracture

Uneven, ConchoidalWalter Schumann

Uneven

Cleavage

2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal

Good in two directions parallel to the prism faces {110}

Mohs Hardness

6-6.54-4.5

2 10

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Chemical Composition

Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈

CaZn(AsO4)(OH)

Moonstone and Austinite Chemical Formula

While comparing Moonstone and Austinite 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 Moonstone and Austinite chemical formula.

Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈
Chemical formula of Austinite- CaZn(AsO4)(OH)

Compare Semi Precious Gemstones

Moonstone Vs Rubellite

Moonstone Vs Schorlomite

Moonstone Vs Simpsonite

Moonstone and Austinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Moonstone and Austinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moonstone and Austinite Optical Properties during the identification of gemstone. Specific gravity of Moonstone is 4.12 whereas that of Austinite is 4.12.