J
John A. Philpotts
Researcher at Goddard Space Flight Center
Publications - 43
Citations - 2584
John A. Philpotts is an academic researcher from Goddard Space Flight Center. The author has contributed to research in topics: Plagioclase & Basalt. The author has an hindex of 21, co-authored 43 publications receiving 2539 citations.
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The Apollo 17 “melt sheet”: Chemistry, age and Rb/Sr systematics
Stephen R. Winzer,David F. Nava,P. J. Schuhmann,R. K. L. Lum,S. Schuhmann,M. M. Lindstrom,D. J. Lindstrom,John A. Philpotts +7 more
TL;DR: In this paper, major, minor, and trace-element compositions, age data, and Rb/Sr systematics of Apollo 17 boulders have been compiled, and additional analyses performed on a norite breccia clast (77215) included in the Apollo 17, Station 7 boulder.
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Luna 20 and Apollo 16 core fines: large-ion lithophile trace-element abundances
TL;DR: Li, K, Rb and Sr abundances have been determined by mass-spectrometric stable isotope dilution analysis for a sample of Luna 20 fines and for eight fines from the Apollo 16 deep drill core as discussed by the authors.
Chemical character of the partially flooded Smythii Basin based on Al/Si orbital X-ray data
TL;DR: In this article, the authors used X-ray fluorescence data from the Smythii Basin to show that mare-basalt flooding is confined to the northeastern quadrant of the basin.
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Suppression of monoxide interference in surface ionization mass spectrometry of rare-earth elements
TL;DR: In this article, a technique was developed that produces monoxide-free spectra of the rare-earth elements by controlled in-leakage of propane or H/sub 2/ to the source chamber for a steady-state ion gauge pressure of about 10/sup -4/Torr during analysis.
Origin of 78235, a lunar norite cumulate.
TL;DR: A chemical and petrographic study of the phases from the rock 78235 which was returned on the Apollo 17 mission is reported in this paper. But the analysis of the thin sections from the bounder confirm its cumulate origin.