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Plumbogummite
Plumbogummite

Willemite
Willemite



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Plumbogummite
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Willemite

Plumbogummite and Willemite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

4.0143.89-4.18
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Conchoidal, Uneven

Cleavage

None
{0001}, {11 2 0} imperfect

Mohs Hardness

4-55.5
2 10
👆🏻

Chemical Composition

PbAl3(PO4)(SO4)(OH)6
Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Plumbogummite and Willemite Chemical Formula

While comparing Plumbogummite and Willemite 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 Willemite chemical formula.

  • Chemical formula of Plumbogummite- PbAl3(PO4)(SO4)(OH)6
  • Chemical formula of Willemite- Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Plumbogummite and Willemite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Plumbogummite and Willemite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Plumbogummite and Willemite Optical Properties during the identification of gemstone. Specific gravity of Plumbogummite is 3.89-4.18 whereas that of Willemite is 3.89-4.18.