Davidite samples. Davidite (glossy black area at right) is an oxide of rare earth minerals and exists in two forms: davidite-La and davidite-Ce,which contain lanthanum and cerium respectively. It forms in uranium bearing pegmatites and has a non-crystalline,glossy black or faintly brownish appearance. This sample is from Crocker's Well,South Australia,and measures 110 millimetres across | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 5125 px × 3417 px |
Model Release : | Non requis |
Restrictions : | - |