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Lazurite
Lazurite

Mottramite
Mottramite



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Lazurite
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Mottramite

Lazurite and Mottramite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

Soluble
Soluble

Durability

-
-

Specific Gravity

2.755.9
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Sub-Conchoidal

Cleavage

Imperfect on {110}
None observed

Mohs Hardness

5.53
2 10
👆🏻

Chemical Composition

(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
PbCu(VO4)(OH)

Lazurite and Mottramite Chemical Formula

While comparing Lazurite 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 Lazurite and Mottramite chemical formula.

  • Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
  • Chemical formula of Mottramite- PbCu(VO4)(OH)

Lazurite and Mottramite Specific Gravity

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