Galena and Nuummite Physical Properties

Galena

Nuummite

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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

6.233.18-3.37

1 7.18

1.5 Fracture

Subconchoidal, Brittle, Metallic

Conchoidal

1.6 Cleavage

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

Perfect on 210

1.7 Mohs Hardness

2.5-2.755.5-6

2 10

1.8 Chemical Composition

PbS

Not Available

Galena and Nuummite Chemical Formula

While comparing Galena and Nuummite 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 Nuummite chemical formula.

Chemical formula of Galena- PbS

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Galena and Nuummite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Galena and Nuummite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Galena and Nuummite Optical Properties during the identification of gemstone. Specific gravity of Galena is 3.18-3.37 whereas that of Nuummite is 3.18-3.37.