Fig. 33:

(a) The studied mollusc shell appears as linear prisms, closely and very regularly packed side-by-side.

(b) The upper level compartment, the organic template that surrounds mineral prisms, can easily be made visible after acidic etching.

(c,d,e) Microscopic observation of thin sections (polarised light) allows the monocrystalline appearance of prisms to become evident.

back to: Mapping of Sulphur in Calcareous Mollusc Shells