11. Samarskite occurs in rare earth bearing granite pegmatites with other rare minerals. 12. This is part of the argument used in the Rare Earth hypothesis. 13. Bromopyrogallol red is used as indicating reagent for rare earth type clement5. 14. Later he became involved in the research of the rare earth elements. 15. Mischmetal is used in the preparation of virtually all rare earth elements. 16. Kyrgyzstan has significant deposits of metals including gold and rare earth metals. 17. Incompatible elements and rare earth elements are enriched in these lavas. 18. MgFeSi contains 3 42 % magnesium and small amounts of rare earth metals. 19. Heavy Fermions are intermetallic compounds, containing rare earth or actinide elements. 20. North Korea has been reported to have sold rare earth metals to China.
