Willemite and Caledonite Physical Properties

Willemite

Caledonite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.89-4.185.6-5.76

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven

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

1.6 Cleavage

{0001}, {11 2 0} imperfect

[001] perfect; [100] distinct

1.7 Mohs Hardness

5.52.5-3

2 10

1.8 Chemical Composition

Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Willemite and Caledonite Chemical Formula

While comparing Willemite and Caledonite 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 Willemite and Caledonite chemical formula.

Chemical formula of Willemite- Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Caledonite- Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)

Compare Red Gemstones

Willemite Vs Hessonite Garnet

Willemite Vs Garnet Color Change

Willemite Vs Garnet Malaia

Willemite and Caledonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Willemite and Caledonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Willemite and Caledonite Optical Properties during the identification of gemstone. Specific gravity of Willemite is 5.6-5.76 whereas that of Caledonite is 5.6-5.76.