Corundum and Anthophyllite Physical Properties

Corundum

Anthophyllite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.90-4.052.9-3.5

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Difficult, Fibrous

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle

1.6 Cleavage

None – parting in 3 directions

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

1.7 Mohs Hardness

95.5-6

2 10

1.8 Chemical Composition

Al 2O 3Arthur Thomas , Gemstones (2009)

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

Corundum and Anthophyllite Chemical Formula

While comparing Corundum 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 Corundum and Anthophyllite chemical formula.

Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
Chemical formula of Anthophyllite- (Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Corundum and Anthophyllite Specific Gravity

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