Fuchsite and Polyhalite Physical Properties

Fuchsite

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

2.77-2.882.78

1 7.18

1.5 Fracture

Uneven

Conchoidal, Brittle

1.6 Cleavage

Perfect basal

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

1.7 Mohs Hardness

2.53.5

2 10

1.8 Chemical Composition

K(Al,Cr) 3Si 3O 10(OH) 2Gemdat.org , Management Team (2012)

Not Available

Fuchsite and Polyhalite Chemical Formula

While comparing Fuchsite 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 Fuchsite and Polyhalite chemical formula.

Chemical formula of Fuchsite- K(Al,Cr) 3Si 3O 10(OH) 2Gemdat.org , Management Team (2012)

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Fuchsite and Polyhalite Specific Gravity

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