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Name: |
lazulite |
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Class: |
Phosphates/Arsenates/Vanadates |
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Chemistry: |
MgAl2(PO4)2(OH)2 Hydroxy Magnesium/Aluminum Phosphate |
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Color(s): |
light blue, blue, dark blue, sometimes violet tints |
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Hardness: |
5.0 - 6.0 |
SpecGrav: |
3.0 - 3.1 |
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Fracture: |
uneven |
Cleavage: |
indistinct |
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Crystal: |
Monoclinic, pseudo-dipyramidal |
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Envronment: |
In hypersilicic rocks, igneous veins, metamorphic quartzites. |
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Association: |
rutile, quartz, kyanite, corundum, garnet, sapphire |
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Locals: |
| Austria | Switzerland | Brazil | Georgia, USA | |
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Misc: |
Dissolves in strong hot acids very slowly, breaks apart when heated. The name is derived from the Persian "lazhward", meaning "blue". Scorzalite is the iron rich end-member where Fe substitutes for Mg. |
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