Annabergite and Hematite Physical Properties

Annabergite

Hematite

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1 Physical Properties

1.1 Tenacity

Sectile

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.075.00-5.30

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

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

1.6 Cleavage

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

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

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

Ni3(AsO4)2•8(H2O)

Fe 2O 3Arthur Thomas , Gemstones (2009)

Annabergite and Hematite Chemical Formula

While comparing Annabergite 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 Annabergite and Hematite chemical formula.

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

Compare Green Gemstones

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Annabergite and Hematite Specific Gravity

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