Aragonite and Goethite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Dilute acid
HCl soluble
Durability
Not Available
Not Available
Specific Gravity
2.93-2.96
4.27-4.29
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
Cleavage
Distinct on {010}, imperfect {110} and {011}
Perfect {010}
Mohs Hardness
3.5-4
5-5.5
Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
FeO(OH)Arthur Thomas , Gemstones (2009)
Aragonite and Goethite Chemical Formula
While comparing Aragonite 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 Aragonite and Goethite chemical formula.
- Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
Aragonite and Goethite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Aragonite and Goethite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Aragonite and Goethite Optical Properties during the identification of gemstone. Specific gravity of Aragonite is 4.27-4.29 whereas that of Goethite is 4.27-4.29.