Thulite and Goethite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
HCl soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.1
  
4.27-4.29
  
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
  
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
  
Cleavage
Perfect {010} imperfect {100}
  
Perfect {010}
  
Mohs Hardness
6-7
  
5-5.5
  
Chemical Composition
Ca2Al3(SiO4)3(OH)
  
FeO(OH)Arthur Thomas , Gemstones (2009)
  
Thulite and Goethite Chemical Formula
While comparing Thulite 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 Thulite and Goethite chemical formula.
- Chemical formula of Thulite- Ca2Al3(SiO4)3(OH)
- Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
Thulite and Goethite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Thulite and Goethite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thulite and Goethite Optical Properties during the identification of gemstone. Specific gravity of Thulite is 4.27-4.29 whereas that of Goethite is 4.27-4.29.