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Faustite
Faustite

Cassiterite
Cassiterite



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Faustite and Cassiterite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
insoluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.9
6.86-7.03
1.5 Fracture
Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular
1.6 Cleavage
{???} Indistinct
{100} imperfect, {110} indistinct; partings on {111} or {011}
1.7 Mohs Hardness
4.5
6-7
1.8 Chemical Composition
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
SnO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Faustite and Cassiterite Chemical Formula

While comparing Faustite and Cassiterite 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 Cassiterite chemical formula.

  • Chemical formula of Faustite- (Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Cassiterite- SnO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Faustite and Cassiterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Faustite and Cassiterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Cassiterite Optical Properties during the identification of gemstone. Specific gravity of Faustite is 6.86-7.03 whereas that of Cassiterite is 6.86-7.03.