| 31. | Later it was shown that decipium was a mixture of samarium and other rare earth elements.
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| 32. | Thorium hydroxide is dissolved in an inorganic acid and then purified from the rare earth elements.
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| 33. | Neodymium metal, one of the rare earth elements, is the primary raw material in neo powder.
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| 34. | This chakra, being so closely related to the element of Earth, also reflects the earth elements.
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| 35. | Sinopac is engaged in development and production of rare earth elements ( REE ) in Africa.
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| 36. | Rare earth elements patterns may also be used.
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| 37. | In the original draft of the book I had three chapters on the rare earth elements.
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| 38. | Oxygen, the most abundant Earth element by mass, is retained on Earth by combination with silicon.
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| 39. | The rare earth elements are often found together.
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| 40. | Additionally carbonatites may be either enriched in magnetite and apatite or rare earth elements, fluorine and barium.
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