Thulite and Periclase Physical Properties

Thulite

Periclase

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.13.7-3.9

1 7.18

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

Conchoidal, Brittle

1.6 Cleavage

Perfect {010} imperfect {100}

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

1.7 Mohs Hardness

6-75.5-6

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

MgOMichael OâDonoghue , 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 OâDonoghue , Gems, Sixth Edition (2006)

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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.