Apophyllite and Gahnospinel Physical Properties

Apophyllite

Gahnospinel

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.30-2.503.65-4.55

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009)

ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect on (001)

None, but may exhibit slight parting

1.7 Mohs Hardness

4.5-57.5-8

2 10

1.8 Chemical Composition

KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

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

Apophyllite and Gahnospinel Chemical Formula

While comparing Apophyllite 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 and Gahnospinel chemical formula.

Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

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Apophyllite and Gahnospinel Specific Gravity

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