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Datolite
Datolite

Sellaite
Sellaite



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Datolite and Sellaite Physical Properties

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1 Physical Properties
1.1 Tenacity
Brittle
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.90-3.00
3.14-3.16
1.5 Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Metallic
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
1.6 Cleavage
None
Perfect on {010} and {110}
1.7 Mohs Hardness
5-5.5
5-5.5
1.8 Chemical Composition
CaBSiO 4(OH)Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
MgF 2Ulrich Henn and Claudio C.

Datolite and Sellaite Chemical Formula

While comparing Datolite and Sellaite 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 Datolite and Sellaite chemical formula.

  • Chemical formula of Datolite- CaBSiO 4(OH)Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Sellaite- MgF 2Ulrich Henn and Claudio C.

Datolite and Sellaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Datolite and Sellaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Datolite and Sellaite Optical Properties during the identification of gemstone. Specific gravity of Datolite is 3.14-3.16 whereas that of Sellaite is 3.14-3.16.