Glaucophane and Galena Physical Properties

Glaucophane

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

3-3.156.23

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

Subconchoidal, Brittle, Metallic

1.6 Cleavage

Good on [110] and on [001]

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

1.7 Mohs Hardness

6.0-6.52.5-2.75

2 10

1.8 Chemical Composition

[ ]Na2(Mg3Al2)Si8O22(OH)2

PbS

Glaucophane and Galena Chemical Formula

While comparing Glaucophane 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 Glaucophane and Galena chemical formula.

Chemical formula of Glaucophane- [ ]Na2(Mg3Al2)Si8O22(OH)2
Chemical formula of Galena- PbS

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Glaucophane and Galena Specific Gravity

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