Gibbsite and Galena Physical Properties

Gibbsite

Galena

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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

2.356.23

1 7.18

1.5 Fracture

Fibrous, Difficult, Fibrous

Subconchoidal, Brittle, Metallic

1.6 Cleavage

{001} Perfect

Cubic perfect on [001], parting on [111]

1.7 Mohs Hardness

2.5-32.5-2.75

2 10

1.8 Chemical Composition

Al(OH)3

PbS

Gibbsite and Galena Chemical Formula

While comparing Gibbsite and Galena 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 Galena chemical formula.

Chemical formula of Gibbsite- Al(OH)3
Chemical formula of Galena- PbS

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Gibbsite and Galena Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gibbsite and Galena Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gibbsite and Galena Optical Properties during the identification of gemstone. Specific gravity of Gibbsite is 6.23 whereas that of Galena is 6.23.