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

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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, from Arendal, Norway, measures 120 millimetres wide.

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Size: 5230px × 3669px
Photo credit: © DIRK WIERSMA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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