Vanadinite and Astrophyllite Physical Properties

Vanadinite

Astrophyllite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.8-7.13.2-3.4

1 7.18

1.5 Fracture

Uneven, Conchoidal, Brittle

Uneven, Brittle, Metallic

1.6 Cleavage

None

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

3-43

2 10

1.8 Chemical Composition

C20H36

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

Vanadinite and Astrophyllite Chemical Formula

While comparing Vanadinite 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 Vanadinite and Astrophyllite chemical formula.

Chemical formula of Vanadinite- C20H36
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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Vanadinite and Astrophyllite Specific Gravity

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