replacement

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replacement

1. Geology the growth of a mineral within another of different chemical composition by gradual simultaneous deposition and removal
2. a process of fossilization by gradual substitution of mineral matter for the original organic matter

replacement

[ri′plās·mənt]
(geology)
Growth of a new or chemically different mineral in the body of an old mineral by simultaneous capillary solution and deposition.
(paleontology)
Substitution of inorganic matter for the original organic constituents of an organism during fossilization.
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