Moonstone and Legrandite Physical Properties

Moonstone

Legrandite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.56-2.603.98-4.04

1 7.18

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Fracture

Uneven, ConchoidalWalter Schumann

Conchoidal

Cleavage

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

Imperfect, poor one {100}

Mohs Hardness

6-6.54.5-5

2 10

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Chemical Composition

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

Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Moonstone and Legrandite Chemical Formula

While comparing Moonstone and Legrandite 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 Legrandite chemical formula.

Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈
Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Semi Precious Gemstones

Moonstone Vs Rubellite

Moonstone Vs Schorlomite

Moonstone Vs Simpsonite

Moonstone and Legrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Moonstone and Legrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moonstone and Legrandite Optical Properties during the identification of gemstone. Specific gravity of Moonstone is 3.98-4.04 whereas that of Legrandite is 3.98-4.04.