Hypertext Webster Gateway: "apatite"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Apatite \Ap"a*tite\, n. [Gr. ? deceit, fr. ? to deceive; it
having been often mistaken for other minerals.] (Min.)
Native phosphate of lime, occurring usually in six-sided
prisms, color often pale green, transparent or translucent.
From WordNet (r) 1.7 (wn)
apatite
n : a common complex mineral consisting of calcium fluoride
phosphate or calcium chloride phosphate; a source of
phosphorus
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