Astrophyllite and Linarite Physical Properties

Astrophyllite

Linarite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.2-3.45.35

1 7.18

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Fracture

Uneven

Conchoidal

Cleavage

Perfect on [001] imperfect on [100]

Perfect on {100}, imperfect on {001}

Mohs Hardness

32.5

2 10

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Chemical Composition

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

PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Astrophyllite and Linarite Chemical Formula

While comparing Astrophyllite and Linarite 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 Linarite 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 Linarite- PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Astrophyllite and Linarite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Linarite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Linarite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 5.35 whereas that of Linarite is 5.35.