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Fluorite |
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| The purplish mineral fluorite is the most common source of the element fluorine. Pure fluorine is a pale greenish-yellow gas at normal temperatures. The element is so reactive that even water and glass will burn in a fluorine atmosphere. | ||||||
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| Mark A. Schneider/Photo Researchers, Inc. | ||||||
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| Appears in these articles: | ||||||
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| Fluorite; Fluorine | ||||||
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