Wardite and Polyhalite Physical Properties

Wardite

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

2.812.78

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Conchoidal, Brittle

1.6 Cleavage

{001} Perfect

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

1.7 Mohs Hardness

4.5-53.5

2 10

1.8 Chemical Composition

NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Not Available

Wardite and Polyhalite Chemical Formula

While comparing Wardite 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 Wardite and Polyhalite chemical formula.

Chemical formula of Wardite- NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Wardite and Polyhalite Specific Gravity

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