Faustite and Mottramite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.9
  
5.9
  
Fracture
Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal
  
Sub-Conchoidal, Brittle, Metallic
  
Cleavage
{???} Indistinct
  
None observed
  
Mohs Hardness
4.5
  
3
  
Chemical Composition
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
  
Not Available
  
Faustite and Mottramite Chemical Formula
While comparing Faustite and Mottramite 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 Mottramite chemical formula.
- Chemical formula of Faustite- (Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
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Faustite and Mottramite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Faustite and Mottramite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Mottramite Optical Properties during the identification of gemstone. Specific gravity of Faustite is 5.9 whereas that of Mottramite is 5.9.