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Annabergite
Annabergite

Bytownite
Bytownite



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Annabergite
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Bytownite

Annabergite and Bytownite Physical Properties

Physical Properties

Tenacity

Sectile
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

3.072.72-2.75
1 7.18
👆🏻

Fracture

-
Uneven

Cleavage

Perfect on {010}, indistinct on {100} and {102}
Perfect on [001], good on [010], imperfect on [110]

Mohs Hardness

26-6.5
2 10
👆🏻

Chemical Composition

Ni3(AsO4)2•8(H2O)
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Annabergite and Bytownite Chemical Formula

While comparing Annabergite and Bytownite 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 Bytownite chemical formula.

  • Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)
  • Chemical formula of Bytownite- Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Annabergite and Bytownite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Annabergite and Bytownite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Annabergite and Bytownite Optical Properties during the identification of gemstone. Specific gravity of Annabergite is 2.72-2.75 whereas that of Bytownite is 2.72-2.75.