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Boracite
Boracite

Gibbsite
Gibbsite



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Boracite and Gibbsite Physical Properties

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1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Soluble
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.95-2.96
2.35
1.5 Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Fibrous, Difficult, Fibrous
1.6 Cleavage
None
{001} Perfect
1.7 Mohs Hardness
7-7.5
2.5-3
1.8 Chemical Composition
Mg 3B 7O 13ClMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Al(OH)3

Boracite and Gibbsite Chemical Formula

While comparing Boracite and Gibbsite 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 Boracite and Gibbsite chemical formula.

  • Chemical formula of Boracite- Mg 3B 7O 13ClMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Gibbsite- Al(OH)3

Boracite and Gibbsite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Boracite and Gibbsite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Boracite and Gibbsite Optical Properties during the identification of gemstone. Specific gravity of Boracite is 2.35 whereas that of Gibbsite is 2.35.