Vanadinite         

Pb5(VO4)3X

 [X = Cl, F,or OH]

Specimen from Mibladen, Morocco

University of Cincinnati Mineral Collection

Specimen from Puzzler Mine, Yuma AZ

(Click images to enlarge)

Scanning Electron Microscope image (FEI XL 30 ESEM)

Scanning Electron Microscope image (FEI XL 30 ESEM)

 

Crystal System

Specific

 gravity

Hardness

Color

Tetragonal

6.94

3½ - 4

Brown, brownish yellow, brown, red, yellow,

Composition

Formula weight = 1416.27 g/mole

 

 

    Pb

73.15 %

    PbO

78.8 %

 

    O

13.56

 

 

 

    V

10.79

    V2O5

19.26

 

    Cl

  2.50

    Cl

  2.5

 

Web resources:

http://webmineral.com

http://www.mindat.org/

 

Name is an allusion to its composition

 

  Vanadinite in water distribution systems

 

Lead service branch, utility 20. Chloramine disinfection, phosphate corrosion control.

Scanning Electron Microscope image, utility 20 (FEI XL 30 SEM)

 

Full-size image at  Van_20_BSE (Free use with attribution JB Maynard 2011)