| 11. | Ground it with the earth element, which is key here.
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| 12. | Volcanoes on the Coastal Range and light rare earth elements.
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| 13. | At the Sorbonne, Matignon mostly worked on rare earth elements.
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| 14. | Light rare earth elements are highly concentrated, indicating that the magma is highly differentiated.
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| 15. | Nelsonite is currently mined in China for rare earth elements.
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| 16. | The secret lies in adding the rare earth element erbium to the glass fiber.
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| 17. | Finding rare earth elements is only the first and some argue the easiest step.
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| 18. | The normalization process is used mainly in spider diagrams for the rare earth elements.
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| 19. | A yellow or brown sofa would be an earth element.
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| 20. | Distribution of rare earth elements was studied in a labolatory.
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