A mineral composed of calcium phosphate with fluorine, a fossil apatite that forms in sedimentary rocks and is important for fertilizer production.
Named after the Franconia region in Germany (Latin Francia), where it was identified and studied. The '-lite' suffix denotes a mineral or stone variety.
Francolite locked ancient seawater's phosphate inside itself millions of years ago, and now we mine it to feed crops—past oceans feeding present farms through fossilized chemistry.
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