| 31. | The carbonatite has important resources of rare earth elements and is currently managed by ASX-listed Peak Resources.
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| 32. | It also provides a source of unusual mineral specimens and rare earth elements ( REE ) extraction.
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| 33. | Additionally carbonatites may be either enriched in magnetite and apatite or rare earth elements, fluorine and barium.
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| 34. | The magnetic medium are typically amorphous R-FeCo thin film ( R being a rare earth element ).
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| 35. | Bastn�site and the phosphate mineral monazite are the two largest sources of cerium and other rare earth elements.
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| 36. | In trace elements, they are typically more enriched in the light rare earth elements than mid-ocean ridge basalts.
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| 37. | Rare earth elements are popular dopants.
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| 38. | Rare earth elements are strongly enriched.
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| 39. | Regarding rare earth elements, most reserves are located in China, which controls the world market for these elements.
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| 40. | And one of my favorite books is called " Episodes From the History of the Rare Earth Elements ."
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