Polyhalite and Edenite Physical Properties

Polyhalite

Edenite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.783.05-3.37

1 7.18

1.5 Fracture

Conchoidal, Brittle

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

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

Good on (110)

1.7 Mohs Hardness

3.55-6

2 10

1.8 Chemical Composition

Not Available

NaCa2Mg5Si7AlO22(OH)2

Polyhalite and Edenite Chemical Formula

While comparing Polyhalite and Edenite 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 Edenite chemical formula.

Chemical formula of Edenite- NaCa2Mg5Si7AlO22(OH)2

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Polyhalite and Edenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Edenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Edenite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 3.05-3.37 whereas that of Edenite is 3.05-3.37.