Obsidian and Anthophyllite Physical Properties

Obsidian

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

2.35-2.602.9-3.5

1 7.18

1.5 Fracture

Conchoidal, ConchoidalWalter Schumann, Conchoidal

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle

1.6 Cleavage

Not Available

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

1.7 Mohs Hardness

5-5.55.5-6

2 10

1.8 Chemical Composition

Not Available

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

Obsidian and Anthophyllite Chemical Formula

While comparing Obsidian 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 Obsidian and Anthophyllite chemical formula.

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

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Obsidian and Anthophyllite Specific Gravity

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