mineralization

https://doi.org/10.1351/goldbook.13912
Process through which an organic substance becomes impregnated by or turned into inorganic substances.
Notes:
  1. A particular case is the process by which living organisms produce and structure minerals often to harden or stiffen existing tissues. (See biomineralization.)
  2. In the case of polymer biodegradation, this term is used to reflect conversion to _015233_ and \(\ce{H2O}\) and other inorganics. \(\ce{CH4}\) can be considered as part of the mineralization process because it comes up in parallel to the minerals in anaerobic composting, also called methanization.
Source:
PAC, 2012, 84, 377. (Terminology for biorelated polymers and applications (IUPAC Recommendations 2012)) on page 393 [Terms] [Paper]