Astrophyllite and Tremolite Physical Properties

Astrophyllite

Tremolite

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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

3.2-3.42.95-3.07

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

Perfect on [001] imperfect on [100]

Perfect on {110} at 56° and 124°; partings on {010} and {100}

1.7 Mohs Hardness

35-6

2 10

1.8 Chemical Composition

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

Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.

Astrophyllite and Tremolite Chemical Formula

While comparing Astrophyllite and Tremolite 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 Astrophyllite and Tremolite chemical formula.

Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Tremolite- Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.

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Astrophyllite and Tremolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Tremolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Tremolite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 2.95-3.07 whereas that of Tremolite is 2.95-3.07.