Anthophyllite and Astrophyllite Physical Properties

Anthophyllite

Astrophyllite

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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

2.9-3.53.2-3.4

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle

Uneven, Brittle, Metallic

1.6 Cleavage

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

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

5.5-63

2 10

1.8 Chemical Composition

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

(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Anthophyllite and Astrophyllite Chemical Formula

While comparing Anthophyllite and Astrophyllite 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 Astrophyllite 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 Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Compare Brown Gemstones

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Anthophyllite Vs Brucite

Anthophyllite Vs Bronzite

Anthophyllite and Astrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anthophyllite and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anthophyllite and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Anthophyllite is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.