Aragonite and Apophyllite KF Physical Properties

Aragonite

Apophyllite KF

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Dilute acid

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.93-2.962.33-2.37

1 7.18

1.5 Fracture

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

Uneven, Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

Distinct on {010}, imperfect {110} and {011}

Perfect on {001}, imperfect on {110}

1.7 Mohs Hardness

3.5-44.5-5

2 10

1.8 Chemical Composition

CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

Aragonite and Apophyllite KF Chemical Formula

While comparing Aragonite 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 Aragonite and Apophyllite KF chemical formula.

Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)

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Aragonite and Apophyllite KF Specific Gravity

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