Physics
Scientific paper
Jan 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995georl..22..117i&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 22, no. 2, p. 117-120
Physics
84
Crystals, Magnesium, Moisture Content, Silicon Oxides, Spinel, Water, Earth Mantle, Mass Spectroscopy, X Ray Diffraction
Scientific paper
The water content in modified spinel, synthesized at 15.5 GPa under hydrous conditions, has been measured by means of secondary ion mass spectrometry (SIMS). We found that the modified spinel crystals contain up to 3.1 +/- 0.4 wt % H2O, which is consistent with the amounts estimated from the deficits in the oxide totals of the microprobe analysis. X-ray diffraction analyses for a single crystal showed that the sample containing 2.5 +/- 0.3 wt % H2O is of the modified spinel structure with the lattice parameters a = 5.663(1), b = 11.546(2), c = 8.247(4)A and V = 539.2(5)A(exp 3). The present results suggest that a considerable amount of H2O may exist as hydrous modified spinel in the mantle transition zone, which could have important implications for the constitution and dynamics of the mantle.
Inoue Toru
Kudoh Yasuhiro
Yurimoto Hisayoshi
No associations
LandOfFree
Hydrous modified spinel, Mg(1.75)SiH(0.5)O4: a new water reservoir in the mantle transition region does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Hydrous modified spinel, Mg(1.75)SiH(0.5)O4: a new water reservoir in the mantle transition region, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrous modified spinel, Mg(1.75)SiH(0.5)O4: a new water reservoir in the mantle transition region will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1821081