Gibbsite and Aragonite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Dilute acid
Durability
Not Available
Not Available
Specific Gravity
2.35
2.93-2.96
Fracture
Fibrous, Difficult, Fibrous
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
{001} Perfect
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
2.5-3
3.5-4
Chemical Composition
Al(OH)3
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Gibbsite and Aragonite Chemical Formula
While comparing Gibbsite and Aragonite 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 Gibbsite and Aragonite chemical formula.
- Chemical formula of Gibbsite- Al(OH)3
- Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Gibbsite and Aragonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gibbsite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gibbsite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Gibbsite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.