Rosasite and Polyhalite Physical Properties

Rosasite

Polyhalite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Effervesces in cold

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

4-4.2

2.78

1.5 Fracture

Splintery

Conchoidal, Brittle

1.6 Cleavage

Perfect on {100} and {010}

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

1.7 Mohs Hardness

3.5

1.8 Chemical Composition

Not Available

Rosasite and Polyhalite Chemical Formula

While comparing Rosasite 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 Rosasite and Polyhalite chemical formula.

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Rosasite and Polyhalite Specific Gravity

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