Thulite and Zincite Physical Properties

Thulite

Zincite

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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

3.15.50-5.90

1 7.18

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

Perfect {010} imperfect {100}

On {10 1 0}, perfect; parting on {000 1 }

1.7 Mohs Hardness

6-74

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)

Thulite and Zincite Chemical Formula

While comparing Thulite and Zincite 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 Zincite chemical formula.

Chemical formula of Thulite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Zincite- (Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Thulite and Zincite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thulite and Zincite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thulite and Zincite Optical Properties during the identification of gemstone. Specific gravity of Thulite is 5.50-5.90 whereas that of Zincite is 5.50-5.90.