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Willemite
Willemite

Pectolite
Pectolite



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Willemite
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Pectolite

Willemite and Pectolite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

3.89-4.182.74-2.90
1 7.18
👆🏻

Fracture

Conchoidal, Uneven
Uneven, Splintery

Cleavage

{0001}, {11 2 0} imperfect
Perfect on {100} and {001}

Mohs Hardness

5.54.5-5
2 10
👆🏻

Chemical Composition

Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.

Willemite and Pectolite Chemical Formula

While comparing Willemite and Pectolite 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 Willemite and Pectolite chemical formula.

  • Chemical formula of Willemite- Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Pectolite- Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.

Willemite and Pectolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Willemite and Pectolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Willemite and Pectolite Optical Properties during the identification of gemstone. Specific gravity of Willemite is 2.74-2.90 whereas that of Pectolite is 2.74-2.90.