Click on thumbnails for a larger image. Please be patient since some of these pages of thumbnail images take some time to load. These mineral photos are copyrighted by their owners and may not be used without permission.
Grimselite: K3Na(UO2)(CO3)3·(H2O)
Comments: Bright yellow coatings and minor, small crystals of grimselite on a white quartz matrix.. Location: Gerstenegg - Sommerloch Tunnel, Grimsel, Hasli Tal, Bern, Schweiz (Switzerland).. Scale: See Image. © Paul M. Schumacher
Comments: Small yellow crystals of grimselite in matrix. Location: Gerstenegg/Sommerloch tunnel, Grimsel Region, Hasli Valley, Bern, Switzerland. Scale: Picture size 1 mm. © Thomas Witzke / Abraxas-Verlag