Ajoite and Gahnite Physical Properties

Ajoite

Gahnite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Decomposed by acids

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.964.00-4.62

1 7.18

1.5 Fracture

Not Available

Conchoidal, Uneven

1.6 Cleavage

Perfect on {010}

Indistinct parting on [111]

1.7 Mohs Hardness

57.5-8

2 10

1.8 Chemical Composition

(K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)

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

Ajoite and Gahnite Chemical Formula

While comparing Ajoite 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 Ajoite and Gahnite chemical formula.

Chemical formula of Ajoite- (K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)
Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Ajoite and Gahnite Specific Gravity

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