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Websterite

For the hydrous aluminium sulfate mineral "websterite", see Aluminite.
Websterite highlighted in a ternary diagram
Cumulate layers of websterite in the McMurdo Dry Valleys in Antarctica

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

  1. ^ 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.


Quelle: http://en.wikipedia.org/wiki/Websterite