Achroite and Hematite Physical Properties

Achroite

Hematite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

2.90-3.40

Uneven, ConchoidalWalter Schumann

Indiscernible

7-7.5

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

Brittle

5.00-5.30

Uneven, ConchoidalWalter Schumann, Conchoidal

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

Fe 2O 3Arthur Thomas , Gemstones (2009)

Achroite and Hematite Chemical Formula

While comparing Achroite 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 Achroite and Hematite chemical formula.

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Achroite and Hematite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Achroite and Hematite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Achroite Vs Hematite during the identification of gemstone. Specific gravity of Achroite is whereas that of Hematite is .