Astrophyllite and Hanksite Physical Properties

Astrophyllite

Hanksite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Readily soluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

3.2-3.4

2.562

1.5 Fracture

Uneven, Brittle, Metallic

Uneven, Conchoidal, Brittle

1.6 Cleavage

Perfect on [001] imperfect on [100]

Good on {0001}

1.7 Mohs Hardness

3-3.5

1.8 Chemical Composition

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

KNa22(SO4)9(CO3)2Cl

Astrophyllite and Hanksite Chemical Formula

While comparing Astrophyllite and Hanksite 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 Hanksite 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 Hanksite- KNa22(SO4)9(CO3)2Cl

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Astrophyllite and Hanksite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Hanksite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Hanksite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 2.562 whereas that of Hanksite is 2.562.