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Plumbogummite
Plumbogummite

Colemanite
Colemanite



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Plumbogummite
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Colemanite

Plumbogummite and Colemanite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

4.0142.40-2.42
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
-

Cleavage

None
{010} Perfect, {001} Distinct

Mohs Hardness

4-54.5
2 10
👆🏻

Chemical Composition

PbAl3(PO4)(SO4)(OH)6
Ca 2B 6O 11 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Plumbogummite and Colemanite Chemical Formula

While comparing Plumbogummite 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 Plumbogummite and Colemanite chemical formula.

  • Chemical formula of Plumbogummite- PbAl3(PO4)(SO4)(OH)6
  • Chemical formula of Colemanite- Ca 2B 6O 11 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Plumbogummite and Colemanite Specific Gravity

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