Gibbsite and Caledonite Physical Properties

Gibbsite

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

2.355.6-5.76

1 7.18

1.5 Fracture

Fibrous, Difficult, Fibrous

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

1.6 Cleavage

{001} Perfect

[001] perfect; [100] distinct

1.7 Mohs Hardness

2.5-32.5-3

2 10

1.8 Chemical Composition

Al(OH)3

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

Gibbsite and Caledonite Chemical Formula

While comparing Gibbsite 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 Gibbsite and Caledonite chemical formula.

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

Compare Grey Gemstones

Gibbsite Vs Vanadinite

Gibbsite Vs Pallasite

Gibbsite Vs Galena

Gibbsite and Caledonite Specific Gravity

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