Faustite and Bertrandite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.9
2.59-2.60
Fracture
Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal
Brittle, Metallic, Brittle, Metallic
Cleavage
{???} Indistinct
{001} Perfect, {110} Distinct, {101} Distinct
Chemical Composition
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Faustite and Bertrandite Chemical Formula
While comparing Faustite and Bertrandite 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 Bertrandite 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 Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Faustite and Bertrandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Faustite and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Faustite is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.