Glaucophane and Goethite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
HCl soluble
Durability
Not Available
Not Available
Specific Gravity
3-3.15
4.27-4.29
Fracture
Conchoidal, Brittle, Conchoidal
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
Cleavage
Good on [110] and on [001]
Perfect {010}
Mohs Hardness
6.0-6.5
5-5.5
Chemical Composition
[ ]Na2(Mg3Al2)Si8O22(OH)2
FeO(OH)Arthur Thomas , Gemstones (2009)
Glaucophane and Goethite Chemical Formula
While comparing Glaucophane 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 Glaucophane and Goethite chemical formula.
- Chemical formula of Glaucophane- [ ]Na2(Mg3Al2)Si8O22(OH)2
- Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
Glaucophane and Goethite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Glaucophane and Goethite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Glaucophane and Goethite Optical Properties during the identification of gemstone. Specific gravity of Glaucophane is 4.27-4.29 whereas that of Goethite is 4.27-4.29.