/aw'thi jen"ik/, adj. Geol.
(of a constituent of a rock) formed in the rock where it is found. Cf. allogenic (def. 1).
[1885-90; < G Authigen < Gk authigenés native to a specific place (aûthi there + -genes born) + -IC; see GENIC]

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Universalium. 2010.

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