Hematite and Annabergite Physical Properties

Hematite

Annabergite

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1 Physical Properties

1.1 Tenacity

Brittle

Sectile

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.00-5.303.07

1 7.18

1.5 Fracture

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

Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

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

Perfect on {010}, indistinct on {100} and {102}

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

Fe 2O 3Arthur Thomas , Gemstones (2009)

Ni3(AsO4)2•8(H2O)

Hematite and Annabergite Chemical Formula

While comparing Hematite and Annabergite 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 Annabergite chemical formula.

Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)

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Hematite and Annabergite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hematite and Annabergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hematite and Annabergite Optical Properties during the identification of gemstone. Specific gravity of Hematite is 3.07 whereas that of Annabergite is 3.07.