Chromite and Astrophyllite Physical Properties

Chromite

Astrophyllite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.5-4.83.2-3.4

1 7.18

1.5 Fracture

Uneven

Uneven, Brittle, Metallic

1.6 Cleavage

None, parting may develop along {111}

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

5.53

2 10

1.8 Chemical Composition

Fe++Cr2O4

(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Chromite and Astrophyllite Chemical Formula

While comparing Chromite and Astrophyllite 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 Chromite and Astrophyllite chemical formula.

Chemical formula of Chromite- Fe++Cr2O4
Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

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Chromite and Astrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chromite and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chromite and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Chromite is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.