Caledonite and Variscite Physical Properties

Caledonite

Variscite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.6-5.762.42-2.58

1 7.18

1.5 Fracture

Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)

Conchoidal, Splintery, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle

1.6 Cleavage

[001] perfect; [100] distinct

[010] perfect

1.7 Mohs Hardness

2.5-34-5

2 10

1.8 Chemical Composition

Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)

AlPO₄ · 2(H₂O)

Caledonite and Variscite Chemical Formula

While comparing Caledonite and Variscite 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 Caledonite and Variscite chemical formula.

Chemical formula of Caledonite- Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Variscite- AlPO₄ · 2(H₂O)

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Caledonite and Variscite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Caledonite and Variscite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Caledonite and Variscite Optical Properties during the identification of gemstone. Specific gravity of Caledonite is 2.42-2.58 whereas that of Variscite is 2.42-2.58.