Faustite and Cobaltite Physical Properties

Faustite

Cobaltite

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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

2.96.3

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal

UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic

1.6 Cleavage

{???} Indistinct

{100} Good, {010} Good, {001} Good

1.7 Mohs Hardness

4.55.5

2 10

1.8 Chemical Composition

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

CoAsSAnthony et al , Handbook of mineralogy (2001)

Faustite and Cobaltite Chemical Formula

While comparing Faustite and Cobaltite 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 Cobaltite 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 Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)

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Faustite and Cobaltite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Faustite and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Faustite is 6.3 whereas that of Cobaltite is 6.3.