Sellaite and Steatite Physical Properties

Sellaite

Steatite

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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

3.14-3.16

2.20-2.80

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle

Not Available

1.6 Cleavage

Perfect on {010} and {110}

Not Available

1.7 Mohs Hardness

5-5.5

Not Available

1.8 Chemical Composition

MgF 2Ulrich Henn and Claudio C.

Mg 3Si 4O 10(OH) 2Gemdat.org , Management Team (2012)

Sellaite and Steatite Chemical Formula

While comparing Sellaite and Steatite 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 Sellaite and Steatite chemical formula.

Chemical formula of Sellaite- MgF 2Ulrich Henn and Claudio C.
Chemical formula of Steatite- Mg 3Si 4O 10(OH) 2Gemdat.org , Management Team (2012)

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Sellaite and Steatite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sellaite and Steatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sellaite and Steatite Optical Properties during the identification of gemstone. Specific gravity of Sellaite is 2.20-2.80 whereas that of Steatite is 2.20-2.80.