Eosphorite and Polyhalite Physical Properties

Eosphorite

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

3.05-3.082.78

1 7.18

1.5 Fracture

Subconchoidal, Uneven, Conchoidal, Uneven

Conchoidal, Brittle

1.6 Cleavage

Poor on {100}

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

1.7 Mohs Hardness

53.5

2 10

1.8 Chemical Composition

Mn2+ Al(PO 4)(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Not Available

Eosphorite and Polyhalite Chemical Formula

While comparing Eosphorite 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 Eosphorite and Polyhalite chemical formula.

Chemical formula of Eosphorite- Mn2+ Al(PO 4)(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Eosphorite and Polyhalite Specific Gravity

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