Plumbopyrochlore Columbite-(Fe) Image

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Columbite-(Fe), Plumbopyrochlore

Large Columbite-(Fe) Image

Mineral:

Columbite-(Fe): Fe++Nb2O6
Plumbopyrochlore: (Pb,Y,U,Ca)2-xNb2O6(OH)

Comments:

Brown plumbopyrochlore crystal with dark brown ferrocolumbite (columbite-(Fe)).

Location:

Holdazan, Buregteg, Mongolia.

Scale:

See Photo.

Copyright:

© Jeff Weissman / Photographic Guide to Mineral Species

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