Fire Opal and Atacamite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.97-2.22
3.745-3.776
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001)
Conchoidal, Conchoidal, Brittle
Cleavage
Not Available
Perfect on {010}, fair on {101}
Mohs Hardness
6-6.5
3-3.5
Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
Cu2Cl(OH)3
Fire Opal and Atacamite Chemical Formula
While comparing Fire Opal 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 Fire Opal and Atacamite chemical formula.
- Chemical formula of Fire Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Atacamite- Cu2Cl(OH)3
Fire Opal and Atacamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Fire Opal and Atacamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fire Opal and Atacamite Optical Properties during the identification of gemstone. Specific gravity of Fire Opal is 3.745-3.776 whereas that of Atacamite is 3.745-3.776.