RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA / SCIENCE PHOTO LIBRARY RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA / SCIENCE PHOTO LIBRARY
Pyrochlore. Pyrochlore describes a group of minerals which are solid solutions containing niobium and tantalum (transition metals). Pyrochlore deposits are the major source of niobium ore.
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