Polyhalite and Glaucophane Physical Properties

Polyhalite

Glaucophane

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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

2.783-3.15

1 7.18

1.5 Fracture

Conchoidal, Brittle

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

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

Good on [110] and on [001]

1.7 Mohs Hardness

3.56.0-6.5

2 10

1.8 Chemical Composition

Not Available

[ ]Na2(Mg3Al2)Si8O22(OH)2

Polyhalite and Glaucophane Chemical Formula

While comparing Polyhalite and Glaucophane 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 Glaucophane chemical formula.

Chemical formula of Glaucophane- [ ]Na2(Mg3Al2)Si8O22(OH)2

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Polyhalite and Glaucophane Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Glaucophane Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Glaucophane Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 3-3.15 whereas that of Glaucophane is 3-3.15.