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Dravite
Dravite

Creedite
Creedite



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Dravite
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Creedite

Dravite and Creedite Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.03-3.182.70
Amber
1 7.18
1.5 Fracture
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.6 Cleavage
{???} Indistinct
Perfect on {100}
1.7 Mohs Hardness
7-7.54.5
Amber
2 10
1.8 Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Dravite and Creedite Chemical Formula

While comparing Dravite and Creedite 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 Dravite and Creedite chemical formula.

  • Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
  • Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Dravite and Creedite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dravite and Creedite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Creedite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 2.70 whereas that of Creedite is 2.70.