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Thulite
Thulite

Periclase
Periclase



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Thulite
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Periclase

Thulite and Periclase Physical Properties

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Physical Properties

Tenacity

-
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

3.13.7-3.9
1 7.18
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Fracture

Uneven, Conchoidal
Conchoidal

Cleavage

Perfect {010} imperfect {100}
{001} perfect; {111} imperfect, may exhibit parting on , {011}

Mohs Hardness

6-75.5-6
2 10
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Chemical Composition

Ca2Al3(SiO4)3(OH)
MgOMichael O’Donoghue , Gems, Sixth Edition (2006)

Thulite and Periclase Chemical Formula

While comparing Thulite and Periclase 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 Thulite and Periclase chemical formula.

  • Chemical formula of Thulite- Ca2Al3(SiO4)3(OH)
  • Chemical formula of Periclase- MgOMichael O’Donoghue , Gems, Sixth Edition (2006)

Thulite and Periclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thulite and Periclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thulite and Periclase Optical Properties during the identification of gemstone. Specific gravity of Thulite is 3.7-3.9 whereas that of Periclase is 3.7-3.9.