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Lazulite
Ceylonite
Ceylonite and Lazulite Physical Properties


Physical Properties
Tenacity
-  
-  
Solubility
-  
-  
Durability
-  
-  
Specific Gravity
3.04-3.17  
3.63-3.9  
Fracture
Uneven  
Conchoidal, Uneven  
Cleavage
{001} Indistinct, {???} Indistinct  
Indistinct  
Mohs Hardness
5.5  
7.5-8  
Chemical Composition
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references  
(Mg,Fe2+ )Al 2O 4Gemdat.org , Management Team (2012) More from other references  
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