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Fluorapatite and Lapis lazuli Physical Properties


Lapis lazuli and Fluorapatite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.1-3.25   
2.50-3.00   

Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)   
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)   

Cleavage
Indistinct   
3,6   

Mohs Hardness
5   
5.5   

Chemical Composition
Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)   
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4   

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Fluorapatite and Lapis lazuli Chemical Formula

While comparing Fluorapatite and Lapis lazuli 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 Fluorapatite and Lapis lazuli chemical formula.

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Fluorapatite and Lapis lazuli Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fluorapatite and Lapis lazuli Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fluorapatite and Lapis lazuli Optical Properties during the identification of gemstone. Specific gravity of Fluorapatite is 2.50-3.00 whereas that of Lapis lazuli is 2.50-3.00.

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