Caledonite and Vivianite Physical Properties

Caledonite

Vivianite

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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

5.6-5.762.64-2.70

1 7.18

1.5 Fracture

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

(e.g. graphite).

1.6 Cleavage

[001] perfect; [100] distinct

{010} Perfect

1.7 Mohs Hardness

2.5-3Not Available

2 10

1.8 Chemical Composition

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

Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Caledonite and Vivianite Chemical Formula

While comparing Caledonite and Vivianite 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 Vivianite 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 Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

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Caledonite and Vivianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Caledonite and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Caledonite and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Caledonite is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.