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Elbaite
Elbaite

Mottramite
Mottramite



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Elbaite
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Mottramite

Elbaite and Mottramite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

2.90-3.105.9
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Sub-Conchoidal

Cleavage

Poor/indistinct on {1120} and {1011}
None observed

Mohs Hardness

73
2 10
👆🏻

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
PbCu(VO4)(OH)

Elbaite and Mottramite Chemical Formula

While comparing Elbaite and Mottramite 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 Mottramite 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 Mottramite- PbCu(VO4)(OH)

Elbaite and Mottramite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Elbaite and Mottramite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Elbaite and Mottramite Optical Properties during the identification of gemstone. Specific gravity of Elbaite is 5.9 whereas that of Mottramite is 5.9.