Ludlamite and Galena Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.1-3.2
6.23
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
Subconchoidal, Brittle, Metallic
Cleavage
Vitreous, pearly on cleavage
Cubic perfect on [001], parting on [111]
Mohs Hardness
3-4
2.5-2.75
Chemical Composition
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
PbS
Ludlamite and Galena Chemical Formula
While comparing Ludlamite 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 Ludlamite and Galena chemical formula.
- Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Galena- PbS
Ludlamite and Galena Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ludlamite and Galena Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ludlamite and Galena Optical Properties during the identification of gemstone. Specific gravity of Ludlamite is 6.23 whereas that of Galena is 6.23.