Lazulite and Thulite Physical Properties

Lazulite

Thulite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.04-3.173.1

1 7.18

1.5 Fracture

Uneven, Uneven, Gemstones of the world (2001) More from other references

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

{001} Indistinct, {???} Indistinct

Perfect {010} imperfect {100}

1.7 Mohs Hardness

5.56-7

2 10

1.8 Chemical Composition

(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Ca₂Al₃(SiO₄)₃(OH)

Lazulite and Thulite Chemical Formula

While comparing Lazulite and Thulite 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 Lazulite and Thulite chemical formula.

Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Chemical formula of Thulite- Ca₂Al₃(SiO₄)₃(OH)

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Lazulite and Thulite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazulite and Thulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazulite and Thulite Optical Properties during the identification of gemstone. Specific gravity of Lazulite is 3.1 whereas that of Thulite is 3.1.