Verdelite and Allanite Physical Properties

Verdelite

Allanite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

2.90-3.40

Conchoidal

Indiscernible

7-7.5

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

3.40-4.20

Indistinct

-9999

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

Verdelite and Allanite Chemical Formula

While comparing Verdelite and Allanite 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 Verdelite and Allanite chemical formula.

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Verdelite and Allanite Specific Gravity

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