Andradite and Hematite Physical Properties

Andradite

Hematite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.70-4.105.00-5.30

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

none

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

1.7 Mohs Hardness

6.5-76

2 10

1.8 Chemical Composition

Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Fe 2O 3Arthur Thomas , Gemstones (2009)

Andradite and Hematite Chemical Formula

While comparing Andradite 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 Andradite and Hematite chemical formula.

Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)

Compare Green Gemstones

Andradite Vs Augite

Andradite Vs Aragonite

Andradite Vs Astrophyllite

Andradite and Hematite Specific Gravity

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