Goethite and Fluorite Physical Properties
Tenacity
Not Available
Brittle
Solubility
HCl soluble
slightly water soluble and in hot hydrochloric acid
Durability
Not Available
Not Available
Specific Gravity
4.27-4.29
3.00-3.25
Fracture
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
Perfect {010}
Octahedral, perfect on {111}, parting on {011}
Chemical Composition
FeO(OH)Arthur Thomas , Gemstones (2009)
CaF2
Goethite and Fluorite Chemical Formula
While comparing Goethite and Fluorite 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 Fluorite chemical formula.
- Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
- Chemical formula of Fluorite- CaF2
Goethite and Fluorite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Goethite and Fluorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Goethite and Fluorite Optical Properties during the identification of gemstone. Specific gravity of Goethite is 3.00-3.25 whereas that of Fluorite is 3.00-3.25.