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Magnesite
Magnesite

Siderite
Siderite



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Magnesite
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Siderite

Magnesite and Siderite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

Effervesces in hot HCl
-

Durability

-
-

Specific Gravity

2.92-3.123.83-3.89
1 7.18
👆🏻

Fracture

Conchoidal
Uneven, Conchoidal

Cleavage

[10 1 1] perfect
Perfect on {01 1 1}

Mohs Hardness

3.5-4.53.5-4.5
2 10
👆🏻

Chemical Composition

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

Magnesite and Siderite Chemical Formula

While comparing Magnesite and Siderite 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 Siderite chemical formula.

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

Magnesite and Siderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Magnesite and Siderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Magnesite and Siderite Optical Properties during the identification of gemstone. Specific gravity of Magnesite is 3.83-3.89 whereas that of Siderite is 3.83-3.89.