Abstract
Most of the earth's mantle is made up of high-pressure silicate minerals that contain octahedrally coordinated silicon (SiVI), but many thermodynamically important details of cation site ordering remain unknown. Silicon-29 nuclear magnetic resonance (NMR) spectroscopy is potentially very useful for determining short-range structure. A systematic study of silicon-29 chemical shifts for SiVI has revealed empirical correlations between shift and structure that are useful in understanding several new calcium silicates. The observed ordering state of a number of high-pressure magnesium silicates is consistent with the results of previous x-ray diffraction studies.
| Original language | English |
|---|---|
| Pages (from-to) | 294-298 |
| Number of pages | 5 |
| Journal | Science |
| Volume | 251 |
| Issue number | 4991 |
| DOIs | |
| Publication status | Published - Jan 1 1991 |
| Externally published | Yes |
ASJC Scopus subject areas
- General
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Stebbins, J. F., & Kanzaki, M. (1991). Local structure and chemical shifts for six-coordinated silicon in high-pressure mantle phases. Science, 251(4991), 294-298. https://doi.org/10.1126/science.251.4991.294