Pollucite and Covellite Physical Properties

Pollucite

Covellite

Add ⊕

1 Physical Properties

1.1 Tenacity

Brittle

Flexible

1.2 Solubility

Readily soluble in HF

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.86-2.944.6-4.76

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

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

1.6 Cleavage

None observed

Perfect on {0001}

1.7 Mohs Hardness

6.5-7Not Available

2 10

1.8 Chemical Composition

(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

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

Pollucite and Covellite Chemical Formula

While comparing Pollucite 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 Pollucite and Covellite chemical formula.

Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

Compare White Gemstones

Pollucite Vs Rutilated Quartz

Pollucite Vs Sard

Pollucite Vs Rubellite

Pollucite and Covellite Specific Gravity

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