Allanite in its host rock. Allanite,also known as orthite,is a sorosilicate mineral. It is one of the most ubiquitous rare earth minerals known and an important ore for a number of rare earth elements,like cerium,lanthanum,yttrium and thorium. It is usually black with a high lustre. This specimen is from Arendal,Norway,and measures 45 mm wide | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 4939 px × 3543 px |
Model Release : | Non requis |
Restrictions : | - |