Anthophyllite and Common Opal Physical Properties

Anthophyllite

Common Opal

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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

2.9-3.51.98-2.50

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle

Conchoidal, Conchoidal, Gemstones of the world (2001)

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

5.5-65.5-6.5

2 10

1.8 Chemical Composition

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

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Anthophyllite and Common Opal Chemical Formula

While comparing Anthophyllite and Common Opal 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 Anthophyllite and Common Opal chemical formula.

Chemical formula of Anthophyllite- (Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Common Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Compare Brown Gemstones

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Anthophyllite Vs Brookite

Anthophyllite and Common Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anthophyllite and Common Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anthophyllite and Common Opal Optical Properties during the identification of gemstone. Specific gravity of Anthophyllite is 1.98-2.50 whereas that of Common Opal is 1.98-2.50.