Elbaite and Anhydrite Physical Properties

Elbaite

Anhydrite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.90-3.102.90-2.98

1 7.18

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Fracture

Uneven, Conchoidal

Conchoidal

Cleavage

Poor/indistinct on {1120} and {1011}

Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.

Mohs Hardness

73.5

2 10

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Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Elbaite and Anhydrite Chemical Formula

While comparing Elbaite and Anhydrite 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 Elbaite and Anhydrite chemical formula.

Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Elbaite and Anhydrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Elbaite and Anhydrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Elbaite and Anhydrite Optical Properties during the identification of gemstone. Specific gravity of Elbaite is 2.90-2.98 whereas that of Anhydrite is 2.90-2.98.