Hurlbutite and Apophyllite KF Physical Properties

Hurlbutite

Apophyllite KF

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.902.33-2.37

1 7.18

1.5 Fracture

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

Uneven, Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

None

Perfect on {001}, imperfect on {110}

1.7 Mohs Hardness

64.5-5

2 10

1.8 Chemical Composition

CaBe 2(PO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

Hurlbutite and Apophyllite KF Chemical Formula

While comparing Hurlbutite and Apophyllite KF 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 Hurlbutite and Apophyllite KF chemical formula.

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

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Hurlbutite and Apophyllite KF Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hurlbutite and Apophyllite KF Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hurlbutite and Apophyllite KF Optical Properties during the identification of gemstone. Specific gravity of Hurlbutite is 2.33-2.37 whereas that of Apophyllite KF is 2.33-2.37.