Hardystonite and Astrophyllite Physical Properties

Hardystonite

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

3.396-3.4433.2-3.4

1 7.18

1.5 Fracture

Brittle, Metallic

Uneven, Brittle, Metallic

1.6 Cleavage

[001] good, [100] and [110] fair

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

3-43

2 10

1.8 Chemical Composition

Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

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

Hardystonite and Astrophyllite Chemical Formula

While comparing Hardystonite 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 Hardystonite and Astrophyllite chemical formula.

Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony 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 White Gemstones

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Hardystonite and Astrophyllite Specific Gravity

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