Allanite and Colemanite Physical Properties

Allanite

Colemanite

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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

3.40-4.202.40-2.42

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

{010} Perfect, {001} Distinct

1.7 Mohs Hardness

Not Available4.5

2 10

1.8 Chemical Composition

Not Available

Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Allanite and Colemanite Chemical Formula

While comparing Allanite and Colemanite 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 Colemanite chemical formula.

Chemical formula of Colemanite- Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Allanite and Colemanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Allanite and Colemanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Allanite and Colemanite Optical Properties during the identification of gemstone. Specific gravity of Allanite is 2.40-2.42 whereas that of Colemanite is 2.40-2.42.