Any biogenic substance that has undergone transformation through the action of geological processes. Thus the term does not include compounds produced entirely by biological processes, such as shells of marine molluscs, oxalate crystals in plant tissues, etc., but does include the constituents of limestones and phosphorites derived from marine organisms.
Stars
This entity has been manually annotated by the ChEBI Team.
is a
has part
is conjugate base of
is conjugate acid of
is tautomer of
is enantiomer of
has functional parent
has parent hydride
is substituent group from
has role
Checked
Unchecked
