Berg W, Lange P, Rössler D, Bothor C
Z Urol Nephrol. 1979 May;72(5):351-7.
Pseudomorphoses of whewellite to weddellite reflect on transparent section preparations and in the REM appearances of cristallisation processes in the secondary whewellite formation via weddellite dehydration. As transformation products are found fine-grained polycrystalline as well as due to recrystallisation larger monocrystalline whewellite. An interesting analogy to this gives the thermic dehydration of weddellite crystals in direction to whewellite, which realises under formation of pseudomorphoses as topotactic process. The dissociation scars appearing in this case are strongly oriented to the crystal grid of weddellite.
球霰石向文石的假晶转变反映在透明薄片制备中以及通过文石脱水形成次生球霰石的结晶过程的扫描电镜图像中。由于重结晶作用，转变产物既有细粒多晶的，也有较大的单晶球霰石。与之有趣的类似情况是文石晶体向球霰石的热脱水过程，该过程以假晶形成的拓扑化学过程实现。在这种情况下出现的解离痕迹与文石的晶格强烈取向。
