Brazilianite and Covellite Physical Properties

Brazilianite

Covellite

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1 Physical Properties

1.1 Tenacity

Not Available

Flexible

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.98-2.994.6-4.76

1 7.18

1.5 Fracture

Conchoidal, Gems

Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic

1.6 Cleavage

(010) Distinct to good

Perfect on {0001}

1.7 Mohs Hardness

5.5Not Available

2 10

1.8 Chemical Composition

NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

Brazilianite and Covellite Chemical Formula

While comparing Brazilianite and Covellite 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 Brazilianite and Covellite chemical formula.

Chemical formula of Brazilianite- NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

Compare Green Gemstones

Brazilianite Vs Chlorastrolite

Brazilianite Vs Chlorapatite

Brazilianite Vs Chalcopyrite

Brazilianite and Covellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brazilianite and Covellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brazilianite and Covellite Optical Properties during the identification of gemstone. Specific gravity of Brazilianite is 4.6-4.76 whereas that of Covellite is 4.6-4.76.