Hematite and Pollucite Physical Properties

Hematite

Pollucite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Readily soluble in HF

1.3 Durability

Not Available

1.4 Specific Gravity

5.00-5.302.86-2.94

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

None, may show partings on {0001} and {10 1 1}

None observed

1.7 Mohs Hardness

66.5-7

2 10

1.8 Chemical Composition

Fe 2O 3Arthur Thomas , Gemstones (2009)

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

Hematite and Pollucite Chemical Formula

While comparing Hematite and Pollucite 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 Hematite and Pollucite chemical formula.

Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

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Hematite and Pollucite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hematite and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hematite and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Hematite is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.