Apophyllite KF and Gahnospinel Physical Properties

Apophyllite KF

Gahnospinel

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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

2.33-2.373.65-4.55

1 7.18

1.4 Fracture

Uneven, Brittle, Uneven, Brittle, Uneven

ConchoidalArthur Thomas, Gemstones (2009)

1.5 Cleavage

Perfect on {001}, imperfect on {110}

None, but may exhibit slight parting

1.6 Mohs Hardness

4.5-57.5-8

2 10

1.9 Chemical Composition

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

Apophyllite KF and Gahnospinel Chemical Formula

While comparing Apophyllite KF and Gahnospinel 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 Gahnospinel chemical formula.

Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)
Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

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Apophyllite KF and Gahnospinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apophyllite KF and Gahnospinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite KF and Gahnospinel Optical Properties during the identification of gemstone. Specific gravity of Apophyllite KF is 3.65-4.55 whereas that of Gahnospinel is 3.65-4.55.