Galena and Peridot Physical Properties

Galena

Peridot

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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

6.231.54-1.55

1 7.18

1.5 Fracture

Subconchoidal, Brittle, Metallic

Conchoidal

1.6 Cleavage

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

Poor

1.7 Mohs Hardness

2.5-2.756.5-7

2 10

1.8 Chemical Composition

PbS

(Mg,Fe)₂SiO₄

Galena and Peridot Chemical Formula

While comparing Galena and Peridot 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 Galena and Peridot chemical formula.

Chemical formula of Galena- PbS
Chemical formula of Peridot- (Mg,Fe)₂SiO₄

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Galena and Peridot Specific Gravity

Another important criteria for qualitative analysis of gemstones is Galena and Peridot Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Galena and Peridot Optical Properties during the identification of gemstone. Specific gravity of Galena is 1.54-1.55 whereas that of Peridot is 1.54-1.55.