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Apophyllite KF
Apophyllite KF

Arfvedsonite
Arfvedsonite



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Apophyllite KF
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Arfvedsonite

Apophyllite KF and Arfvedsonite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.33-2.37
3.3-3.5
1.5 Fracture
Uneven, Brittle, Uneven, Brittle, Uneven
Uneven, Brittle, Metallic, Brittle, Metallic
1.6 Cleavage
Perfect on {001}, imperfect on {110}
Perfect on [110]
1.7 Mohs Hardness
4.5-5
5-6
1.8 Chemical Composition
(K,Na)Ca4Si8O20(F,OH)•8(H2O)
NaNa2(Fe++4Fe+++)Si8O22(OH)2

Apophyllite KF and Arfvedsonite Chemical Formula

While comparing Apophyllite KF and Arfvedsonite 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 Arfvedsonite chemical formula.

  • Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)
  • Chemical formula of Arfvedsonite- NaNa2(Fe++4Fe+++)Si8O22(OH)2

Apophyllite KF and Arfvedsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apophyllite KF and Arfvedsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite KF and Arfvedsonite Optical Properties during the identification of gemstone. Specific gravity of Apophyllite KF is 3.3-3.5 whereas that of Arfvedsonite is 3.3-3.5.