One of the mysteries of the English language finally explained.
A mineral of the apatite group in which fluorine predominates over chlorine and hydroxyl, and which occurs widely as an accessory mineral in igneous and metamorphic rocks and is the chief component of phosphorites.
Mid 19th century; earliest use found in Henry Watts (1815–1884), chemist. From fluoro- + apatite, after German Fluorapatit.
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