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Mottramite
Mottramite

Colemanite
Colemanite



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Mottramite
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Colemanite

Mottramite and Colemanite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

5.92.40-2.42
1 7.18
👆🏻

Fracture

Sub-Conchoidal
-

Cleavage

None observed
{010} Perfect, {001} Distinct

Mohs Hardness

34.5
2 10
👆🏻

Chemical Composition

PbCu(VO4)(OH)
Ca 2B 6O 11 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Mottramite and Colemanite Chemical Formula

While comparing Mottramite and Colemanite 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 Colemanite chemical formula.

  • Chemical formula of Mottramite- PbCu(VO4)(OH)
  • Chemical formula of Colemanite- Ca 2B 6O 11 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Mottramite and Colemanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Colemanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite and Colemanite Optical Properties during the identification of gemstone. Specific gravity of Mottramite is 2.40-2.42 whereas that of Colemanite is 2.40-2.42.