Polyhalite and Augite Physical Properties

Polyhalite

Augite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.783.19-3.56

1 7.18

1.5 Fracture

Conchoidal, Brittle

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

1.6 Cleavage

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

{110} Perfect, {010} Indistinct

1.7 Mohs Hardness

3.55.5-6

2 10

1.8 Chemical Composition

Not Available

(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

Polyhalite and Augite Chemical Formula

While comparing Polyhalite and Augite 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 Augite chemical formula.

Chemical formula of Augite- (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

Compare Red Gemstones

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Polyhalite Vs Heliotrope

Polyhalite Vs Vanadinite

Polyhalite and Augite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Augite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Augite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 3.19-3.56 whereas that of Augite is 3.19-3.56.