Faustite and Wulfenite Physical Properties

Faustite

Wulfenite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.96.50-7.00

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal

Irregular, Brittle, Conchoidal

1.6 Cleavage

{???} Indistinct

On {011}, distinct; on {001}, {013}, indistinct

1.7 Mohs Hardness

4.53

2 10

1.8 Chemical Composition

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

PbMoO 4Walter Schumann , Gemstones of the world (2001)

Faustite and Wulfenite Chemical Formula

While comparing Faustite and Wulfenite 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 Wulfenite 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 Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)

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Faustite and Wulfenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Faustite and Wulfenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Wulfenite Optical Properties during the identification of gemstone. Specific gravity of Faustite is 6.50-7.00 whereas that of Wulfenite is 6.50-7.00.