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Gibbsite
Gibbsite

Thomsonite
Thomsonite



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Gibbsite
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Thomsonite

Gibbsite and Thomsonite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.2 Durability
Not Available
Not Available
1.4 Specific Gravity
2.352.25-2.40
Amber
1 7.18
1.15 Fracture
Fibrous, Difficult, Fibrous
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
1.16 Cleavage
{001} Perfect
perfect on {010}; good on {100}
1.17 Mohs Hardness
2.5-35-5.5
Amber
2 10
1.18 Chemical Composition
Al(OH)3
NaCa 2Al 5Si 5O 20 · 6H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Gibbsite and Thomsonite Chemical Formula

While comparing Gibbsite and Thomsonite 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 Gibbsite and Thomsonite chemical formula.

  • Chemical formula of Gibbsite- Al(OH)3
  • Chemical formula of Thomsonite- NaCa 2Al 5Si 5O 20 · 6H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Gibbsite and Thomsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gibbsite and Thomsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gibbsite and Thomsonite Optical Properties during the identification of gemstone. Specific gravity of Gibbsite is 2.25-2.40 whereas that of Thomsonite is 2.25-2.40.