Lawsonite and Anhydrite Physical Properties

Lawsonite

Anhydrite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.092.90-2.98

1 7.18

1.5 Fracture

White, Yellow, Pale blue, Brittle, Uneven

Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

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

Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.

1.7 Mohs Hardness

83.5

2 10

1.8 Chemical Composition

Not Available

CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Lawsonite and Anhydrite Chemical Formula

While comparing Lawsonite and Anhydrite 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 Anhydrite chemical formula.

Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Lawsonite Vs Paraiba

Lawsonite and Anhydrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lawsonite and Anhydrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lawsonite and Anhydrite Optical Properties during the identification of gemstone. Specific gravity of Lawsonite is 2.90-2.98 whereas that of Anhydrite is 2.90-2.98.