Faustite and Atacamite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.9
  
3.745-3.776
  
Fracture
Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal
  
Conchoidal, Conchoidal, Brittle
  
Cleavage
{???} Indistinct
  
Perfect on {010}, fair on {101}
  
Mohs Hardness
4.5
  
3-3.5
  
Chemical Composition
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
  
Cu2Cl(OH)3
  
Faustite and Atacamite Chemical Formula
While comparing Faustite 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 Faustite and Atacamite chemical formula.
- Chemical formula of Faustite- (Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Atacamite- Cu2Cl(OH)3
Faustite and Atacamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Faustite and Atacamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Atacamite Optical Properties during the identification of gemstone. Specific gravity of Faustite is 3.745-3.776 whereas that of Atacamite is 3.745-3.776.