Allanite and Lazulite Physical Properties

Allanite

Lazulite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

3.40-4.20

Indistinct

-9999

Ca(Ce,La,Y,Ca)Al2(Fe,Al)Si3O12(OH)

3.04-3.17

Uneven

{001} Indistinct, {???} Indistinct

5.5

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

Allanite and Lazulite Chemical Formula

While comparing Allanite and Lazulite 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 Allanite and Lazulite chemical formula.

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Allanite and Lazulite Specific Gravity

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