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Annabergite
Annabergite

Colemanite
Colemanite



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Annabergite
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Colemanite

Annabergite and Colemanite Physical Properties

Physical Properties

Tenacity

Sectile
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.072.40-2.42
1 7.18
👆🏻

Fracture

-
-

Cleavage

Perfect on {010}, indistinct on {100} and {102}
{010} Perfect, {001} Distinct

Mohs Hardness

24.5
2 10
👆🏻

Chemical Composition

Ni3(AsO4)2•8(H2O)
Ca 2B 6O 11 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Annabergite and Colemanite Chemical Formula

While comparing Annabergite and Colemanite 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 Annabergite and Colemanite chemical formula.

  • Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)
  • Chemical formula of Colemanite- Ca 2B 6O 11 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Annabergite and Colemanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Annabergite and Colemanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Annabergite and Colemanite Optical Properties during the identification of gemstone. Specific gravity of Annabergite is 2.40-2.42 whereas that of Colemanite is 2.40-2.42.