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a common mineral, calcium fluorophosphate, ca 5 fp 3 o 12 , occurring in individual crystals and in m-sses and varying in color, formerly used in the manufacture of phosphate fertilizers.
historical examples

apat-te, ap′a-tīt, n. a phosphate of lime of great variety of colour.
chambers’s twentieth century dictionary (part 1 of 4: a-d) various

the usual -ssociation with apat-te and magnet-te crystals is noted.
mount rainier various

phos′phorite, a m-ssive radiated variety of apat-te; phos′phuret, a compound of phosphorus with a metal.
chambers’s twentieth century dictionary (part 3 of 4: n-r) various

with regard to its mode of occurrence, apat-te is found under a variety of conditions.
encyclopaedia britannica, 11th edition, volume 2, slice 2 various

in its general appearance, apat-te exhibits wide variations.
encyclopaedia britannica, 11th edition, volume 2, slice 2 various

the “asparagus-stone” is a form of apat-te, simulating asparagus in colour.
encyclopaedia britannica, 11th edition, volume 2, slice 7 various

the accessory minerals of these rocks are princ-p-lly oligoclase, muscovite, apat-te and zircon.
encyclopaedia britannica, 11th edition, volume 2, slice 2 various

apat-te (phosphate of lime) and pyromorphite (phosphate of lead) contain a considerable amount of it.
a textbook of -ssaying: for the use of those connected with mines. cornelius beringer and john jacob beringer

phosphorite is another name for apat-te, but is chiefly applied to impure amorphous apat-te.
manures and the principles of manuring charles morton aikman

apat-te is doubtless derived from the remains of animals or fishes that lived in the distant past.
the a b c of mining charles a. bramble

noun
a pale green to purple mineral, found in igneous rocks and metamorphosed limestones. it is used in the manufacture of phosphorus, phosphates, and fertilizers. composition: calcium fluorophosphate or calcium chlorophosphate. general formula: ca5(po4,co3)3(f,oh,cl). crystal structure: hexagonal
apat-te
(āp’ə-tīt’)
any of several, usually green, transparent, hexagonal minerals consisting of calcium phosphate with either fluorine, hydroxyl, chlorine or carbonate. apat-te occurs in igneous, metamorphic, and sedimentary rocks, and is used as a source of phosphate for making fertilizers. chemical formula: ca5(po4co3)3(f,oh,cl).