Apatite and Atacamite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.16-3.23
3.745-3.776
Fracture
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven
Conchoidal, Conchoidal, Brittle
Cleavage
[0001] indistinct, [1010] indistinct
Perfect on {010}, fair on {101}
Chemical Composition
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Cu2Cl(OH)3
Apatite and Atacamite Chemical Formula
While comparing Apatite and Atacamite 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 Apatite and Atacamite chemical formula.
- Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Atacamite- Cu2Cl(OH)3
Apatite and Atacamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Apatite and Atacamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Atacamite Optical Properties during the identification of gemstone. Specific gravity of Apatite is 3.745-3.776 whereas that of Atacamite is 3.745-3.776.