Augite and Lazurite Physical Properties

Augite

Lazurite

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Physical Properties

Tenacity

Brittle

Solubility

Soluble

Durability

Specific Gravity

3.19-3.562.75

1 7.18

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Fracture

Uneven, Conchoidal

Cleavage

{110} Perfect, {010} Indistinct

Imperfect on {110}

Mohs Hardness

5.5-65.5

2 10

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Chemical Composition

(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Augite and Lazurite Chemical Formula

While comparing Augite and Lazurite 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 Augite and Lazurite chemical formula.

Chemical formula of Augite- (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Compare Green Gemstones

Augite Vs Chalcopyrite

Augite Vs Chlorapatite

Augite Vs Chlorastrolite

Augite and Lazurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Augite and Lazurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Augite and Lazurite Optical Properties during the identification of gemstone. Specific gravity of Augite is 2.75 whereas that of Lazurite is 2.75.