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Gahnite
Gahnite

Creedite
Creedite



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Gahnite
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Creedite

Gahnite 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
4.00-4.622.70
Amber
1 7.18
1.5 Fracture
Conchoidal, Uneven
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.6 Cleavage
Indistinct parting on [111]
Perfect on {100}
1.7 Mohs Hardness
7.5-84.5
Amber
2 10
1.8 Chemical Composition
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)
Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Gahnite and Creedite Chemical Formula

While comparing Gahnite 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 Gahnite and Creedite chemical formula.

  • Chemical formula of Gahnite- ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Gahnite and Creedite Specific Gravity

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