Grandidierite and Allanite Physical Properties

Grandidierite

Allanite

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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

2.85-3.003.40-4.20

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

Perfect

Not Available

1.7 Mohs Hardness

7.5Not Available

2 10

1.8 Chemical Composition

(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

Not Available

Grandidierite and Allanite Chemical Formula

While comparing Grandidierite 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 Grandidierite and Allanite chemical formula.

Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

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Grandidierite and Allanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Grandidierite and Allanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Allanite Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 3.40-4.20 whereas that of Allanite is 3.40-4.20.