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Boracite
Boracite

Willemite
Willemite



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Boracite
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Boracite and Willemite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

2.95-2.963.89-4.18
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal, Uneven

Cleavage

None
{0001}, {11 2 0} imperfect

Mohs Hardness

7-7.55.5
2 10
👆🏻

Chemical Composition

Mg 3B 7O 13ClMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Boracite and Willemite Chemical Formula

While comparing Boracite 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 Boracite and Willemite chemical formula.

  • Chemical formula of Boracite- Mg 3B 7O 13ClMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Willemite- Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Boracite and Willemite Specific Gravity

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