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Calcite
Calcite

Galena
Galena



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Calcite
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Calcite and Galena Physical Properties

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1 Physical Properties
1.1 Tenacity
Brittle
Brittle
1.2 Solubility
Soluble
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.67-2.73
6.23
1.5 Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Subconchoidal, Brittle, Metallic
1.6 Cleavage
Perfect on [10 1 1] three directions with angle of 74° 55
Cubic perfect on [001], parting on [111]
1.7 Mohs Hardness
3
2.5-2.75
1.8 Chemical Composition
CaCO 3Ulrich Henn and Claudio C.
PbS

Calcite and Galena Chemical Formula

While comparing Calcite 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 Calcite and Galena chemical formula.

  • Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
  • Chemical formula of Galena- PbS

Calcite and Galena Specific Gravity

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