Some Photos of Apollo Samples

pristine cataclastic anorthosite

These are two fragments of Apollo 16 sample 60025, a pristine cataclastic anorthosite. This samples consists almost entirely of plagioclase feldspar. The term cataclastic implies that it is shocked and fractured by meteorite impacts, which causes the opaque white color as opposed to the translucence one sees in terrestrial plagioclase-rich rocks of this size. A millimeter scale is just visible in the lower left corner. Click on image for enlargement.


A petrographic thin section of 60025 (crossed polarizers). fov = 2.3 cm




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Prepared by
: Randy L. Korotev
Department of Earth and Planetary Sciences
Washington University in St. Louis

Please don't contact me about the meteorite you think you've found until you read this and this.


Last revised: 7-Oct-2015