Apophyllite KF and Fayalite Physical Properties

Apophyllite KF

Fayalite

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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

2.33-2.374.392

1 7.18

1.5 Fracture

Uneven, Brittle, Uneven, Brittle, Uneven

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

1.6 Cleavage

Perfect on {001}, imperfect on {110}

{010} moderate, {100} imperfect

1.7 Mohs Hardness

4.5-56.5-7

2 10

1.8 Chemical Composition

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Apophyllite KF and Fayalite Chemical Formula

While comparing Apophyllite KF and Fayalite 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 Fayalite chemical formula.

Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)
Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Green Gemstones

Apophyllite KF Vs Hauyne

Apophyllite KF Vs Langbeinite

Apophyllite KF Vs Nepouite

Apophyllite KF and Fayalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apophyllite KF and Fayalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite KF and Fayalite Optical Properties during the identification of gemstone. Specific gravity of Apophyllite KF is 4.392 whereas that of Fayalite is 4.392.