Faustite and Sphalerite Physical Properties

Faustite

Sphalerite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.93.95-4.10

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal

UnevenWalter Schumann, Gemstones of the world (2001) More from other references, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Uneven

1.6 Cleavage

{???} Indistinct

{110} Perfect, {110} Perfect, {110} Perfect

1.7 Mohs Hardness

4.53.5-4

2 10

1.8 Chemical Composition

(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Faustite and Sphalerite Chemical Formula

While comparing Faustite and Sphalerite 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 Sphalerite 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 Sphalerite- (Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Faustite and Sphalerite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Faustite and Sphalerite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Sphalerite Optical Properties during the identification of gemstone. Specific gravity of Faustite is 3.95-4.10 whereas that of Sphalerite is 3.95-4.10.