Apophyllite KF and Andradite Physical Properties

Apophyllite KF

Andradite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.33-2.373.70-4.10

1 7.18

1.5 Fracture

Uneven, Brittle, Uneven, Brittle, Uneven

Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect on {001}, imperfect on {110}

none

1.7 Mohs Hardness

4.5-56.5-7

2 10

1.8 Chemical Composition

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Apophyllite KF and Andradite Chemical Formula

While comparing Apophyllite KF and Andradite 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 Andradite chemical formula.

Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)
Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Compare Green Gemstones

Apophyllite KF Vs Langbeinite

Apophyllite KF Vs Nepouite

Apophyllite KF Vs Hauyne

Apophyllite KF and Andradite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apophyllite KF and Andradite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite KF and Andradite Optical Properties during the identification of gemstone. Specific gravity of Apophyllite KF is 3.70-4.10 whereas that of Andradite is 3.70-4.10.