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Siderite
Siderite

Riebeckite
Riebeckite



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Siderite
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Riebeckite

Siderite and Riebeckite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

3.83-3.893.28-3.44
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Uneven, Splintery

Cleavage

Perfect on {01 1 1}
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

Mohs Hardness

3.5-4.55.0-6.0
2 10
👆🏻

Chemical Composition

Fe2+ CO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Na2Fe2+3Fe3+2Si8O22(OH)2

Siderite and Riebeckite Chemical Formula

While comparing Siderite and Riebeckite 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 Riebeckite chemical formula.

  • Chemical formula of Siderite- Fe2+ CO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Riebeckite- Na2Fe2+3Fe3+2Si8O22(OH)2

Siderite and Riebeckite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Siderite and Riebeckite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Siderite and Riebeckite Optical Properties during the identification of gemstone. Specific gravity of Siderite is 3.28-3.44 whereas that of Riebeckite is 3.28-3.44.