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authigenic

1. adj. [Geology]

Pertaining to minerals or materials that grow in place with a rock, rather than having been transported and deposited. These include quartz, chlorite, and other pore-filling minerals or cements that grow during diagenesis. Evaporite minerals are authigenic, or formed in situ.

Antonyms: allogenic

See: cement

SEM of authigenic chlorite.

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