Apophyllite KF and Astrophyllite Physical Properties

Apophyllite KF

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

2.33-2.373.2-3.4

1 7.18

1.5 Fracture

Uneven, Brittle, Uneven, Brittle, Uneven

Uneven, Brittle, Metallic

1.6 Cleavage

Perfect on {001}, imperfect on {110}

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

4.5-53

2 10

1.8 Chemical Composition

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

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

Apophyllite KF and Astrophyllite Chemical Formula

While comparing Apophyllite KF 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 Apophyllite KF and Astrophyllite chemical formula.

Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)
Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Compare Green Gemstones

Apophyllite KF Vs Langbeinite

Apophyllite KF Vs Hauyne

Apophyllite KF Vs Nepouite

Apophyllite KF and Astrophyllite Specific Gravity

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