Pyromorphite |
Pb5(PO4)3X [X = Cl, F,or OH] |
Specimen from Yangshuo, Guangxi, China University of Cincinnati Mineral Collection |
Specimen from unknown locality University of Cincinnati Mineral Collection (Click images to enlarge) |
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Reflected light photomicrograph |
Scanning Electron Microscope image (FEI XL 30 ESEM) |
Crystal System |
Specific gravity |
Hardness |
Color |
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Hexagonal |
6.85 |
3½ - 4 |
Green, yellow, brown, grayish white |
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Composition |
Formula weight = 1356.37 g/mole |
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Pb |
76.38 % |
PbO |
82.2 % |
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O |
14.15 |
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P |
6.85 |
P2O5 |
15.7 |
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Cl |
2.61 |
Cl |
2.6 |
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Web resources: |
http://webmineral.com |
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Pyromorphite in water distribution systems
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Lead service branch, utility 01. Chloramine disinfection, phosphate corrosion control.
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Scanning Electron Microscope image, utility 01 (FEI XL 30 ESEM) |
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Scanning Electron Microscope image, utility 01 (FEI XL 30 ESEM)
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Scanning Electron Microscope image, utility 10 (FEI XL 30 ESEM) |
