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Apatite

/ˈæpətaɪt/noun

A calcium phosphate mineral, the main crystalline material of bone and tooth enamel.

The Greek roots

ἀπάτη
apátē
deceit, trickery

Literally: the deceiver

Follow a root:ἀπάτη2 words

The story of the word

Abraham Gottlob Werner named it in 1786 from ἀπάτη, deceit, because collectors kept filing it under beryl, olivine, amethyst and half a dozen other stones. The insult has outlived him in an odd way: apatite turns out to be the mineral your skeleton and your teeth are built from, so the great impostor is the most familiar rock in the human body. Hesiod had already made Ἀπάτη a person, one of the grim daughters of Night.

How it travelled
Ancient Greek → scientific coinage → English
First recorded
early 19th century

In a sentence

The blue-green crystals in the drawer were apatite, not aquamarine.

Tooth enamel is almost pure apatite, which is why acid attacks it so easily.

Built on the same root

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