Topaz and Anthophyllite Physical Properties

Topaz

Anthophyllite

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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

3.49-3.572.9-3.5

1 7.18

1.5 Fracture

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

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle

1.6 Cleavage

[001] Perfect

{110} Perfect, {???} Distinct, {???} Distinct

1.7 Mohs Hardness

85.5-6

2 10

1.8 Chemical Composition

Al₂SiO₄(F,OH)₂

(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Topaz and Anthophyllite Chemical Formula

While comparing Topaz and Anthophyllite 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 Anthophyllite chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
Chemical formula of Anthophyllite- (Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Topaz and Anthophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Anthophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Anthophyllite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 2.9-3.5 whereas that of Anthophyllite is 2.9-3.5.