On the left, a detail of the object 'runic flint' from the collection of Camilla Flebo-Hansen and, on the right, a detail of a photo by Dirk Eysermans with depiction of several 'gypsum' crystals from his collection.
Inhoud
LOOKS CAN BE DECEIVING
SUMMARY
Commonly, sediments with hypersaline pore fluids may contain precipitates of gypsum and/or silica. Rare flint with imprints after gypsum crystals and gypsum crystals replaced by flint from chalk are other examples of the relationship between both minerals. What can a detailed study of these rare finds contribute to a better understanding of the relationship between both minerals and the environment in which they form?
