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Siderite
Siderite

Atacamite
Atacamite



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Siderite
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Atacamite

Siderite and Atacamite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

3.83-3.893.745-3.776
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Conchoidal

Cleavage

Perfect on {01 1 1}
Perfect on {010}, fair on {101}

Mohs Hardness

3.5-4.53-3.5
2 10
👆🏻

Chemical Composition

Fe2+ CO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Cu2Cl(OH)3

Siderite and Atacamite Chemical Formula

While comparing Siderite and Atacamite 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 Siderite and Atacamite chemical formula.

  • Chemical formula of Siderite- Fe2+ CO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Atacamite- Cu2Cl(OH)3

Siderite and Atacamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Siderite and Atacamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Siderite and Atacamite Optical Properties during the identification of gemstone. Specific gravity of Siderite is 3.745-3.776 whereas that of Atacamite is 3.745-3.776.