Lazurite and Goethite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Soluble
HCl soluble
Durability
Not Available
Not Available
Specific Gravity
2.75
4.27-4.29
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
Cleavage
Imperfect on {110}
Perfect {010}
Chemical Composition
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
FeO(OH)Arthur Thomas , Gemstones (2009)
Lazurite and Goethite Chemical Formula
While comparing Lazurite and Goethite 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 Lazurite and Goethite chemical formula.
- Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
- Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
Lazurite and Goethite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Lazurite and Goethite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazurite and Goethite Optical Properties during the identification of gemstone. Specific gravity of Lazurite is 4.27-4.29 whereas that of Goethite is 4.27-4.29.