Faustite and Purpurite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.9
3.2-3.4
Fracture
Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal
Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle
Cleavage
{???} Indistinct
[100] [001] perfect
Chemical Composition
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Faustite and Purpurite Chemical Formula
While comparing Faustite and Purpurite 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 Purpurite 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 Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Faustite and Purpurite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Faustite and Purpurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Purpurite Optical Properties during the identification of gemstone. Specific gravity of Faustite is 3.2-3.4 whereas that of Purpurite is 3.2-3.4.