Goethite and Lazulite Physical Properties
Tenacity
Not Available
Not Available
Solubility
HCl soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.27-4.29
3.04-3.17
Fracture
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
Uneven, Uneven, Gemstones of the world (2001) More from other references
Cleavage
Perfect {010}
{001} Indistinct, {???} Indistinct
Chemical Composition
FeO(OH)Arthur Thomas , Gemstones (2009)
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Goethite and Lazulite Chemical Formula
While comparing Goethite and Lazulite 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 Goethite and Lazulite chemical formula.
- Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
- Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Goethite and Lazulite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Goethite and Lazulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Goethite and Lazulite Optical Properties during the identification of gemstone. Specific gravity of Goethite is 3.04-3.17 whereas that of Lazulite is 3.04-3.17.