Sylvite and Elbaite Physical Properties

Sylvite

Elbaite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.9932.90-3.10

1 7.18

1.5 Fracture

Uneven, Brittle

Uneven, Conchoidal, Brittle, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

1.6 Cleavage

Perfect on [100], [010], [001]

Poor/indistinct on {1120} and {1011}

1.7 Mohs Hardness

2.57

2 10

1.8 Chemical Composition

Not Available

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

Sylvite and Elbaite Chemical Formula

While comparing Sylvite and Elbaite 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 Sylvite and Elbaite 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

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Sylvite and Elbaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sylvite and Elbaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sylvite and Elbaite Optical Properties during the identification of gemstone. Specific gravity of Sylvite is 2.90-3.10 whereas that of Elbaite is 2.90-3.10.