Faustite and Malachite Physical Properties

Faustite

Malachite

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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

2.9

3.25-4.10

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal

Conchoidal, Conchoidal, Gemstones (2009), Uneven

1.6 Cleavage

{???} Indistinct

Perfect on { 2 01} fair on {010}

1.7 Mohs Hardness

4.5

3.5-4

1.8 Chemical Composition

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

Cu₂CO₃(OH)₂

Faustite and Malachite Chemical Formula

While comparing Faustite and Malachite 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 Malachite 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 Malachite- Cu₂CO₃(OH)₂

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Faustite and Malachite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Faustite and Malachite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Malachite Optical Properties during the identification of gemstone. Specific gravity of Faustite is 3.25-4.10 whereas that of Malachite is 3.25-4.10.