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Elbaite
Elbaite

Omphacite
Omphacite



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Elbaite
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Omphacite

Elbaite and Omphacite Physical Properties

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Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

2.90-3.103.16-3.43
1 7.18
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Fracture

Uneven, Conchoidal
Uneven, Conchoidal

Cleavage

Poor/indistinct on {1120} and {1011}
{110} Good, {110} Good

Mohs Hardness

75-6
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
(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

Elbaite and Omphacite Chemical Formula

While comparing Elbaite and Omphacite 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 Omphacite 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 Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

Elbaite and Omphacite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Elbaite and Omphacite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Elbaite and Omphacite Optical Properties during the identification of gemstone. Specific gravity of Elbaite is 3.16-3.43 whereas that of Omphacite is 3.16-3.43.