Lawsonite and Alunite Physical Properties

Lawsonite

Alunite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.092.6-2.9

1 7.18

1.5 Fracture

White, Yellow, Pale blue, Brittle, Uneven

Conchoidal, Uneven

1.6 Cleavage

Perfect on {100} and {010}, imperfect on {101}

On {0001}, perfect

1.7 Mohs Hardness

83.5-4

2 10

1.8 Chemical Composition

Not Available

KAl3(SO4)2(OH)6

Lawsonite and Alunite Chemical Formula

While comparing Lawsonite and Alunite 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 Lawsonite and Alunite chemical formula.

Chemical formula of Alunite- KAl3(SO4)2(OH)6

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Lawsonite and Alunite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lawsonite and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lawsonite and Alunite Optical Properties during the identification of gemstone. Specific gravity of Lawsonite is 2.6-2.9 whereas that of Alunite is 2.6-2.9.