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Magnesite
Magnesite

Annabergite
Annabergite



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Magnesite
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Annabergite

Magnesite and Annabergite Physical Properties

Physical Properties

Tenacity

Brittle
Sectile

Solubility

Effervesces in hot HCl
-

Durability

-
-

Specific Gravity

2.92-3.123.07
1 7.18
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Fracture

Conchoidal
-

Cleavage

[10 1 1] perfect
Perfect on {010}, indistinct on {100} and {102}

Mohs Hardness

3.5-4.52
2 10
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Chemical Composition

MgCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Ni3(AsO4)2•8(H2O)

Magnesite and Annabergite Chemical Formula

While comparing Magnesite and Annabergite 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 Magnesite and Annabergite chemical formula.

  • Chemical formula of Magnesite- MgCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)

Magnesite and Annabergite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Magnesite and Annabergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Magnesite and Annabergite Optical Properties during the identification of gemstone. Specific gravity of Magnesite is 3.07 whereas that of Annabergite is 3.07.