Magnesite and Lazurite Physical Properties

Magnesite

Lazurite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Effervesces in hot HCl

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.92-3.12

2.75

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

[10 1 1] perfect

Imperfect on {110}

1.7 Mohs Hardness

3.5-4.5

5.5

1.8 Chemical Composition

MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Magnesite and Lazurite Chemical Formula

While comparing Magnesite and Lazurite 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 Lazurite chemical formula.

Chemical formula of Magnesite- MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

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Magnesite and Lazurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Magnesite and Lazurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Magnesite and Lazurite Optical Properties during the identification of gemstone. Specific gravity of Magnesite is 2.75 whereas that of Lazurite is 2.75.