Galena and Tourmaline Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
6.23
2.85-3.35
Fracture
Subconchoidal, Brittle, Metallic
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Cubic perfect on [001], parting on [111]
Indistinct
Mohs Hardness
2.5-2.75
7-7.5
Chemical Composition
PbS
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Galena and Tourmaline Chemical Formula
While comparing Galena and Tourmaline 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 Tourmaline chemical formula.
- Chemical formula of Galena- PbS
- Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Galena and Tourmaline Specific Gravity
Another important criteria for qualitative analysis of gemstones is Galena and Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Galena and Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Galena is 2.85-3.35 whereas that of Tourmaline is 2.85-3.35.