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Assorted Precambrian Xenolith and Lavas and bombs

By Astrogeology Science Center 1960 (approx.)
(A) Assorted Precambrian Xenolith, Hopi Buttes Volcanic Field, Arizona (B) Lavas and bombs from Australia
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Detailed Description

(A) Assorted Precambrian Xenolith, Hopi Buttes Volcanic Field, Arizona (B) Lavas and bombs from Kataunga Volcanic field, Austrailia

Sources/Usage

Public Domain.