Anthophyllite and Poudretteite Physical Properties

Anthophyllite

Poudretteite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.9-3.52.51-2.53

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle

Conchoidal, Splintery

1.6 Cleavage

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

None

1.7 Mohs Hardness

5.5-65

2 10

1.8 Chemical Composition

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

KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

Anthophyllite and Poudretteite Chemical Formula

While comparing Anthophyllite and Poudretteite 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 Poudretteite 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 Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Brown Gemstones

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Anthophyllite and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anthophyllite and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anthophyllite and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Anthophyllite is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.