1. Pyrochlore occurs in pegmatites associated with nepheline syenites and other alkalic rocks.2. Tantalum is found in the minerals tantalite and pyrochlore . 3. There four compounds belong to the family of rare-earth pyrochlore oxides. 4. It is a member of the pyrochlore super group. 5. Niobium is in the minerals columbite and pyrochlore . 6. The introduction to his thesis is a pyrochlore review that remains his most cited work to date. 7. The pyrochlore structure shows varied physical properties spanning electronic superconducting materials ( Cd 2 Re 2 O 7 ). 8. Associated minerals include ilmenite, zirkelite, apatite, magnetite, perovskite, fluorite, nepheline, pyrochlore and allanite. 9. It also has an epynomic crystal structure, which is an end member of the spectrum starting from bixbyite and progressing through pyrochlore . 10. Betafite, a mineral group in the pyrochlore supergroup, typically occurs as a primary mineral in granite pegmatites, and rarely in carbonatites. 
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