Picromerite mineral. The mineral picromerite (or schoenite) is a hydrated potassium magnesium sulphate (K2.Mg(SO4)2.6[H2O]). Its crystal system is monoclinic and it usually occurs as white,opaque earthy or crustal precipitates,deposited as an evaporate in marine environments after prolonged evaporation. More rarely it forms well-faceted,blocky and prismatic crystals,opaque and earthy-white,and sometimes translucent. This sample,from potash mines near Neuhoff Ellers in Germany,is 33 centimetres across | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 5125 px × 3417 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |