Pollucite and Hemimorphite Physical Properties

Pollucite

Hemimorphite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Readily soluble in HF

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.86-2.943.30-3.50

1 7.18

1.5 Fracture

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

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

1.6 Cleavage

None observed

Perfect on {110}, poor on {101}, {001} rare

1.7 Mohs Hardness

6.5-75

2 10

1.8 Chemical Composition

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

Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Pollucite and Hemimorphite Chemical Formula

While comparing Pollucite and Hemimorphite 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 Hemimorphite 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 Hemimorphite- Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare White Gemstones

Pollucite Vs Rubellite

Pollucite Vs Rutilated Quartz

Pollucite Vs Sard

Pollucite and Hemimorphite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pollucite and Hemimorphite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Hemimorphite Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 3.30-3.50 whereas that of Hemimorphite is 3.30-3.50.