Polyhalite and Serendibite Physical Properties

Polyhalite

Serendibite

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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

2.783.43-3.44

1 7.18

1.5 Fracture

Conchoidal, Brittle

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

None Observed

1.7 Mohs Hardness

3.56.5-7

2 10

1.8 Chemical Composition

Not Available

Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Polyhalite and Serendibite Chemical Formula

While comparing Polyhalite and Serendibite 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 Serendibite chemical formula.

Chemical formula of Serendibite- Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Polyhalite and Serendibite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Serendibite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Serendibite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 3.43-3.44 whereas that of Serendibite is 3.43-3.44.