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authigenic

[aw-thi-jen-ik] /ˌɔ θɪˈdʒɛn ɪk/
adjective, Geology
1.
(of a constituent of a rock) formed in the rock where it is found.
Compare allogenic (def 1).
Origin of authigenic
1885-1890
1885-90; < German Authigen < Greek authigenḗs native to a specific place (aûthi there + -genēs born) + -ic; see genic
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for authigenic

authigenic

/ˌɔːθɪˈdʒɛnɪk/
adjective
1.
(of minerals) having crystallized in a sediment during or after deposition
Word Origin
C19: from German authigene from Greek authigenēs native + -ic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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