Astrophyllite and Scolecite Physical Properties

Astrophyllite

Scolecite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.2-3.42.20-2.23

1 7.18

1.5 Fracture

Uneven, Brittle, Metallic

Irregular/uneven, UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Uneven

1.6 Cleavage

Perfect on [001] imperfect on [100]

Perfect on {110} and {1 1 0}

1.7 Mohs Hardness

35-5.5

2 10

1.8 Chemical Composition

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

CaAl 2Si 3O 10 · 3H 2OUlrich Henn and Claudio C.

Astrophyllite and Scolecite Chemical Formula

While comparing Astrophyllite and Scolecite 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 Scolecite 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 Scolecite- CaAl 2Si 3O 10 · 3H 2OUlrich Henn and Claudio C.

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Astrophyllite and Scolecite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Scolecite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Scolecite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 2.20-2.23 whereas that of Scolecite is 2.20-2.23.