Polyhalite and Ajoite Physical Properties

Polyhalite

Ajoite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Decomposed by acids

1.3 Durability

Not Available

1.4 Specific Gravity

2.782.96

1 7.18

1.5 Fracture

Conchoidal, Brittle

Not Available

1.6 Cleavage

Perfect on {10 1 }; parting on {010}

Perfect on {010}

1.7 Mohs Hardness

3.55

2 10

1.8 Chemical Composition

Not Available

(K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)

Polyhalite and Ajoite Chemical Formula

While comparing Polyhalite and Ajoite 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 Polyhalite and Ajoite chemical formula.

Chemical formula of Ajoite- (K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)

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Polyhalite and Ajoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Ajoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Ajoite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 2.96 whereas that of Ajoite is 2.96.