Lazurite and Strontianite Physical Properties

Lazurite

Strontianite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.753.63-3.79

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

1.6 Cleavage

Imperfect on {110}

{110} Good

1.7 Mohs Hardness

5.53.5

2 10

1.8 Chemical Composition

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

SrCO 3Walter Schumann , Gemstones of the world (2001) More from other references

Lazurite and Strontianite Chemical Formula

While comparing Lazurite and Strontianite 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 Lazurite and Strontianite chemical formula.

Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
Chemical formula of Strontianite- SrCO 3Walter Schumann , Gemstones of the world (2001) More from other references

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Lazurite and Strontianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazurite and Strontianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazurite and Strontianite Optical Properties during the identification of gemstone. Specific gravity of Lazurite is 3.63-3.79 whereas that of Strontianite is 3.63-3.79.