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Faustite
Faustite

Marcasite
Marcasite



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Faustite
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Marcasite

Faustite and Marcasite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.94.80-4.90
Amber
1 7.18
1.5 Fracture
Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Uneven
1.6 Cleavage
{???} Indistinct
{010} Indistinct
1.7 Mohs Hardness
4.56-6.5
Amber
2 10
1.8 Chemical Composition
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
FeS 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Faustite and Marcasite Chemical Formula

While comparing Faustite and Marcasite 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 Marcasite 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 Marcasite- FeS 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Faustite and Marcasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Faustite and Marcasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Marcasite Optical Properties during the identification of gemstone. Specific gravity of Faustite is 4.80-4.90 whereas that of Marcasite is 4.80-4.90.