Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun geology Any of a class of
minerals , mixed oxides ofmagnesium andiron , that are abundant in the earth's lowermantle (second only toperovskite )
Etymologies
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Examples
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The two minerals, ferroperovskite and ferropericlase, contain virtually all of the iron that occurs in this deep portion of the Earth.
SpaceRef Top Stories 2009
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