Gahnospinel and Apophyllite KF Physical Properties

Gahnospinel

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

3.65-4.552.33-2.37

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009)

Uneven, Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

None, but may exhibit slight parting

Perfect on {001}, imperfect on {110}

1.7 Mohs Hardness

7.5-84.5-5

2 10

1.8 Chemical Composition

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

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

Gahnospinel and Apophyllite KF Chemical Formula

While comparing Gahnospinel 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 Gahnospinel and Apophyllite KF chemical formula.

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

Compare Blue Gemstones

Gahnospinel Vs Jeremejevite

Gahnospinel Vs Hydrogrossular

Gahnospinel Vs Indicolite Blue Tourmaline

Gahnospinel and Apophyllite KF Specific Gravity

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