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Apophyllite KF
Apophyllite KF

Hurlbutite
Hurlbutite



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Apophyllite KF
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Hurlbutite

Apophyllite KF and Hurlbutite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.33-2.372.90
Amber
1 7.18
1.5 Fracture
Uneven, Brittle, Uneven, Brittle, Uneven
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
1.6 Cleavage
Perfect on {001}, imperfect on {110}
None
1.7 Mohs Hardness
4.5-56
Amber
2 10
1.8 Chemical Composition
(K,Na)Ca4Si8O20(F,OH)•8(H2O)
CaBe 2(PO 4) 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Apophyllite KF and Hurlbutite Chemical Formula

While comparing Apophyllite KF and Hurlbutite 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 Hurlbutite chemical formula.

  • Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)
  • Chemical formula of Hurlbutite- CaBe 2(PO 4) 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Apophyllite KF and Hurlbutite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apophyllite KF and Hurlbutite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite KF and Hurlbutite Optical Properties during the identification of gemstone. Specific gravity of Apophyllite KF is 2.90 whereas that of Hurlbutite is 2.90.