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Mottramite
Mottramite

Lazurite
Lazurite



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Mottramite
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Lazurite

Mottramite and Lazurite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

Soluble
Soluble

Durability

-
-

Specific Gravity

5.92.75
1 7.18
👆🏻

Fracture

Sub-Conchoidal
Uneven, Conchoidal

Cleavage

None observed
Imperfect on {110}

Mohs Hardness

35.5
2 10
👆🏻

Chemical Composition

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

Mottramite and Lazurite Chemical Formula

While comparing Mottramite and Lazurite 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 Mottramite and Lazurite chemical formula.

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

Mottramite and Lazurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Lazurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite and Lazurite Optical Properties during the identification of gemstone. Specific gravity of Mottramite is 2.75 whereas that of Lazurite is 2.75.