Grandidierite and Hematite Physical Properties

Grandidierite

Hematite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.85-3.005.00-5.30

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Perfect

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

1.7 Mohs Hardness

7.56

2 10

1.8 Chemical Composition

(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

Fe 2O 3Arthur Thomas , Gemstones (2009)

Grandidierite and Hematite Chemical Formula

While comparing Grandidierite and Hematite 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 Grandidierite and Hematite chemical formula.

Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)

Compare Green Gemstones

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Grandidierite and Hematite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Grandidierite and Hematite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Hematite Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 5.00-5.30 whereas that of Hematite is 5.00-5.30.