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Lazulite
Lazulite

Sylvite
Sylvite



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Lazulite
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Sylvite

Lazulite and Sylvite Physical Properties

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Physical Properties

Tenacity

-
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

3.04-3.171.993
1 7.18
👆🏻

Fracture

Uneven
Uneven

Cleavage

{001} Indistinct, {???} Indistinct
Perfect on [100], [010], [001]

Mohs Hardness

5.52.5
2 10
👆🏻

Chemical Composition

(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
KCl

Lazulite and Sylvite Chemical Formula

While comparing Lazulite and Sylvite 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 Lazulite and Sylvite chemical formula.

  • Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
  • Chemical formula of Sylvite- KCl

Lazulite and Sylvite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazulite and Sylvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazulite and Sylvite Optical Properties during the identification of gemstone. Specific gravity of Lazulite is 1.993 whereas that of Sylvite is 1.993.