Hibonite and Gahnite Physical Properties

Hibonite

Gahnite

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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

3.844.00-4.62

1 7.18

1.5 Fracture

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

Conchoidal, Uneven

1.6 Cleavage

{0001} good, {10 1 0} parting

Indistinct parting on [111]

1.7 Mohs Hardness

7.5-87.5-8

2 10

1.8 Chemical Composition

(Ca,Ce)(Al,Ti,Mg)12O19

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Hibonite and Gahnite Chemical Formula

While comparing Hibonite and Gahnite 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 Hibonite and Gahnite chemical formula.

Chemical formula of Hibonite- (Ca,Ce)(Al,Ti,Mg)12O19
Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Hibonite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hibonite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hibonite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Hibonite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.