Detection of structurally bound hydroxyl in fluorapatite from Apollo Mare basalt 15058,128 using TOF-SIMS

McCubbin, F. M.; Steele, A.; Nekvasil, H.; Schnieders, Albert; Rose, T.; Fries, M.; Carpenter, P. K.; Jolliff, Bradley L.

doi:10.2138/am.2010.3448

Cited by 120 publications

(100 citation statements)

References 41 publications

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“…Therefore, at best, it was an indirect method of estimating OH (proxy for water) content in lunar apatites. Later SIMS analyses confirmed that apatite in mare basalts indeed contains variable and sometimes significant amounts of OH [52][53][54][55][56][57].…”

Section: (D) Mare Basaltsmentioning

confidence: 92%

Understanding the origin and evolution of water in the Moon through lunar sample studies

Anand

Tartèse

Barnes

2014

Phil. Trans. R. Soc. A.

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A paradigm shift has recently occurred in our knowledge and understanding of water in the lunar interior. This has transpired principally through continued analysis of returned lunar samples using modern analytical instrumentation. While these recent studies have undoubtedly measured indigenous water in lunar samples they have also highlighted our current limitations and some future challenges that need to be overcome in order to fully understand the origin, distribution and evolution of water in the lunar interior. Another exciting recent development in the field of lunar science has been the unambiguous detection of water or water ice on the surface of the Moon through instruments flown on a number of orbiting spacecraft missions. Considered together, sample-based studies and those from orbit strongly suggest that the Moon is not an anhydrous planetary body, as previously believed. New observations and measurements support the possibility of a wet lunar interior and the presence of distinct reservoirs of water on the lunar surface. Furthermore, an approach combining measurements of water abundance in lunar samples and its hydrogen isotopic composition has proved to be of vital importance to fingerprint and elucidate processes and source(s) involved in giving rise to the lunar water inventory. A number of sources are likely to have contributed to the water inventory of the Moon ranging from primordial water to meteorite-derived water ice through to the water formed during the reaction of solar wind hydrogen with the lunar soil. Perhaps two of the most striking findings from these recent studies are the revelation that at least some portions of the lunar interior are as water-rich as some Mid-Ocean Ridge Basalt source regions on Earth and that the water in the Earth and the Moon probably share a common origin.

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Section: (D) Mare Basaltsmentioning

confidence: 92%

Understanding the origin and evolution of water in the Moon through lunar sample studies

Anand

Tartèse

Barnes

2014

Phil. Trans. R. Soc. A.

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“…Water contents of apatite grains in mare basalts range from 0 to 6050 ppm H 2 O (Figure 2 and Table S5). These are the highest water contents measured in lunar samples [6][7][8][9] . Both high-Ti (10044 and 75055) and low-Ti (12039 and 14053) mare basalts contain apatite grains with abundant water.…”

mentioning

confidence: 83%

Hydrogen isotope ratios in lunar rocks indicate delivery of cometary water to the Moon

et al. 2011

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Hydrogen isotope ratios in lunar rocks and the delivery of cometary water to the MoonWater plays a critical role in the evolution of planetary bodies 1 , and determination of the amount and sources of lunar water has profound implications for our understanding of the history of the Earth-Moon system. During the Apollo program, the lunar samples were found to be devoid of indigeneous water 2,3 . The severe depletion of lunar volatiles 4 , including water, has long been seen as strong support for the giant-impact origin of the Moon 5 . Recent studies have found water in lunar volcanic glasses 6 and in lunar apatite 7-9 , but the sources of lunar water have not been determined. Here we report ion microprobe measurements of water and hydrogen isotopes in the hydrous mineral apatite, found in crystalline lunar mare basalts and highlands rocks collected during the Apollo missions. We find significant water in apatite from both mare and highlands rocks, indicating a role for water during all phases of the Moon's magmatic history. Variations of hydrogen isotope ratios in apatite suggest the lunar mantle, solar wind protons, and comets as possible sources for water in lunar rocks and imply a significant delivery of cometary water to the Earth-Moon system shortly after the Moon-forming impact.

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“…Dill and Weber (2010) presented "Raman spectra" of fluorite in the Ramanshift range 400-2400 cm −1 (note however that fluorite has only one single first-order Raman band at 322 cm −1 ; Gee et al, 1966), and they assigned by mistake REE-related PL emissions in their spectra to Raman modes. Possible confusion of REE 3+ emissions with Raman bands has been discussed critically by McCubbin et al (2010). These authors pointed out that in Raman spectra of fluorapatite obtained with 532 nm excitation, Sm 3+ emissions (wavelengths about 650 nm) are recorded with apparent Raman shifts of 3300-3500 cm −1 .…”

Section: Introductionmentioning

confidence: 99%

Laser-induced REE3+ photoluminescence of selected accessory minerals — An “advantageous artefact” in Raman spectroscopy

et al. 2015

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Keywords:Zircon Xenotime Monazite Titanite Laser-induced REE photoluminescence Raman artefact Laser-induced photoluminescence of trivalent rare-earth elements (REEs), which is obtained as analytical artefacts in Raman spectra of selected accessory minerals, was studied. Spectra of natural titanite, monazite-(Ce), xenotime-(Y), and zircon samples from various geological environments were compared with emission spectra of synthetic, flux-grown analogues doped with REEs. The latter is of great importance to identify potentially mistakable bands as either Raman or PL signal, and to assign them to certain REE centres. In the samples investigated, various REE centres are excited selectively using 473, 514, 532, 633, and 785 nm laser excitation. Their assignment was verified by photoluminescence-excitation experiments. Luminescence spectral patterns of zircon and titanite vary in dependence of trace-REE concentrations, hence reflecting geochemical growth conditions. "REE artefacts" in Raman spectra of accessory minerals may be used as fingerprint tool for mineral phaseidentification. The distribution of REE emission-intensities, revealed by hyperspectral mapping, opens up the opportunity to visualise mineral textures, complementary to cathodoluminescence imaging-techniques.

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Detection of structurally bound hydroxyl in fluorapatite from Apollo Mare basalt 15058,128 using TOF-SIMS

Cited by 120 publications

References 41 publications

Understanding the origin and evolution of water in the Moon through lunar sample studies

Understanding the origin and evolution of water in the Moon through lunar sample studies

Hydrogen isotope ratios in lunar rocks indicate delivery of cometary water to the Moon

Laser-induced REE3+ photoluminescence of selected accessory minerals — An “advantageous artefact” in Raman spectroscopy

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