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Magnesite
Magnesite

Anhydrite
Anhydrite



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Magnesite and Anhydrite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Brittle
1.2 Solubility
Effervesces in hot HCl
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.92-3.12
2.90-2.98
1.5 Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
1.6 Cleavage
[10 1 1] perfect
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
1.7 Mohs Hardness
3.5-4.5
3.5
1.8 Chemical Composition
MgCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
CaSO 4Michael O’Donoghue , Gems, Sixth edition (2006) More from other references

Magnesite and Anhydrite Chemical Formula

While comparing Magnesite and Anhydrite 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 Anhydrite chemical formula.

  • Chemical formula of Magnesite- MgCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Anhydrite- CaSO 4Michael O’Donoghue , Gems, Sixth edition (2006) More from other references

Magnesite and Anhydrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Magnesite and Anhydrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Magnesite and Anhydrite Optical Properties during the identification of gemstone. Specific gravity of Magnesite is 2.90-2.98 whereas that of Anhydrite is 2.90-2.98.