Websterite
| Igneous rock | |
 Cumulate layers of websterite in the McMurdo Dry Valleys in Antarctica. | |
| Composition | |
|---|---|
| Classification | Ultramafic |
| Primary | clinopyroxene and orthopyroxene |
| Secondary | olivine, hornblende, spinel, chromite, garnet, anorthite |
| Texture | Phaneritic |
Websterite is ultramafic igneous rock, a type of pyroxenite that has less than 5% olivine and roughly equal proportions of orthopyroxene and clinopyroxene.
Websterite is named after the town Webster in North Carolina.[1]
References
[edit]- ↑ Rogers, Nick; Stephen Blake; Kevin Burton; Mike Widdowson; Ian Parkinson; Nigel Harris (2008). An introduction to our dynamic planet. Cambridge: Cambridge Univ. Press. ISBN 978-0521494243.
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