Topaz and Monazite Physical Properties

Topaz

Monazite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.49-3.574.80-5.50

1 7.18

1.5 Fracture

Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Not Available

1.6 Cleavage

[001] Perfect

Not Available

1.7 Mohs Hardness

85-5.5

2 10

1.8 Chemical Composition

Al₂SiO₄(F,OH)₂

(Ce,La,Nd,Th)PO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Topaz and Monazite Chemical Formula

While comparing Topaz and Monazite 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 Topaz and Monazite chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
Chemical formula of Monazite- (Ce,La,Nd,Th)PO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Topaz and Monazite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Monazite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Monazite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 4.80-5.50 whereas that of Monazite is 4.80-5.50.