Geschichte: Actually looking for opal, I was astonished by how many big blocks of gypsum were laying on the ground. I could collect and transport just some small hand specimens.
Geologie: Gypsum forms under dry conditions when water bodies like ponds or lakes evaporate. During evaporation, gypsum that is dissolved in the water starts to exsolve, meaning it forms solid crystals that grow at the bottom of the water body. This can lead to the formation of very beautiful, white gypsum crystals.