Marialite and Goethite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
HCl soluble
Durability
Not Available
Not Available
Specific Gravity
2.50
4.27-4.29
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
Cleavage
Distinct on {100} and {110}
Perfect {010}
Mohs Hardness
5.5-6
5-5.5
Chemical Composition
3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
FeO(OH)Arthur Thomas , Gemstones (2009)
Marialite and Goethite Chemical Formula
While comparing Marialite 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 Marialite and Goethite chemical formula.
- Chemical formula of Marialite- 3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
- Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
Marialite and Goethite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Marialite and Goethite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Marialite and Goethite Optical Properties during the identification of gemstone. Specific gravity of Marialite is 4.27-4.29 whereas that of Goethite is 4.27-4.29.