Websterite is ultramafic igneous rock that consists of roughly equal proportions of orthopyroxene and clinopyroxene. It is a type of pyroxenite.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Peridotite_Olivine-Orthopyroxene-Clinopyroxene_Websterite_highlighted.svg/220px-Peridotite_Olivine-Orthopyroxene-Clinopyroxene_Websterite_highlighted.svg.png)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/3/39/Layered_Websterite_in_Basement_Sill_in_McMurdo_Dry_Valleys_in_Antarctica.jpg/220px-Layered_Websterite_in_Basement_Sill_in_McMurdo_Dry_Valleys_in_Antarctica.jpg)
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.