Astrophyllite and Vishnevite Physical Properties

Astrophyllite

Vishnevite

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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

3.2-3.4Not Available

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic

Brittle, Uneven

1.6 Cleavage

Perfect on [001] imperfect on [100]

Perfect

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)

Not Available

Astrophyllite and Vishnevite Chemical Formula

While comparing Astrophyllite and Vishnevite 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 Vishnevite chemical formula.

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

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Astrophyllite and Vishnevite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Vishnevite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Vishnevite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is Not Available whereas that of Vishnevite is Not Available.