Axinite and Polyhalite Physical Properties

Axinite

Polyhalite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.26-3.362.78

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

Conchoidal, Brittle

1.6 Cleavage

Good on {100}

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

1.7 Mohs Hardness

6.5-73.5

2 10

1.8 Chemical Composition

(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Not Available

Axinite and Polyhalite Chemical Formula

While comparing Axinite and Polyhalite 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 Axinite and Polyhalite chemical formula.

Chemical formula of Axinite- (Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Axinite and Polyhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Axinite and Polyhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Axinite and Polyhalite Optical Properties during the identification of gemstone. Specific gravity of Axinite is 2.78 whereas that of Polyhalite is 2.78.