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Ettringite
Ettringite

Papagoite
Papagoite



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Ettringite
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Papagoite

Ettringite and Papagoite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Partially soluble in water
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.773.25
Amber
1 7.18
1.5 Fracture
Not Available
Brittle, Metallic
1.6 Cleavage
Perfect on {10 1 0}
Imperfect in one direction
1.7 Mohs Hardness
2-2.55-5.5
Amber
2 10
1.8 Chemical Composition
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
CaCuAlSi 2O 6(OH) 3Michael O’Donoghue , Gems, Sixth Edition (2006)

Ettringite and Papagoite Chemical Formula

While comparing Ettringite and Papagoite 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 Ettringite and Papagoite chemical formula.

  • Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Papagoite- CaCuAlSi 2O 6(OH) 3Michael O’Donoghue , Gems, Sixth Edition (2006)

Ettringite and Papagoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ettringite and Papagoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Papagoite Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 3.25 whereas that of Papagoite is 3.25.