"Weddelite (COD) to Whewellite (COM) in situ transformation and distribution in a mineral sample"

In this experiment we will obtain diffraction images from two reference Calcium oxalate hydrates (dihydrated COD or monohydrated, COM), namely wheddelite and whewhelite from samples composed by dispersions of crystals 5um to 10um. Through an accelerated hydration process the transformation time between COD and COM can be regulated form minutes up to 6h The parameters and transformation times extracted form previous IR spectroscopy experiments will be used to observe the in-situ transformation of COD into COM, which will permit to validate the hypothesis of this happening by an elongation and twist of the cell. The transformed species of COM should present a larger azimutal spread than the COM reference that will be measured though mosaicity scans. To finalise, natural minerals containing COM or COM and transformed COM will be analysed to obtain images of both crystals as present in nature and some poteital intermediate state.