Details of Award
NERC Reference : NER/B/S/2002/00539
The structure of the 10 ? phase, Mg3Si4O10(OH)2.xH2O.
Grant Award
- Principal Investigator:
- Dr M Welch, The Natural History Museum, Mineralogy
- Co-Investigator:
- Dr A Pawley, The University of Manchester, Earth Atmospheric and Env Sciences
- Grant held at:
- The Natural History Museum, Mineralogy
- Science Area:
- Earth
- Overall Classification:
- Earth
- ENRIs:
- Global Change
- Environmental Risks and Hazards
- Science Topics:
- Properties Of Earth Materials
- Mantle & Core Processes
- Abstract:
- The so-called '10-? phase', nominally Mg3Si4O10(OH)2.xH2O, is considered to be a potentially very significant player in the water budget of 'coo!', older (> 50 Ma) subduction zones. It also serves as a useful model for examining the mechanisms by which structural molecular H2O can be incorporated into high-pressure phases. However, its structure and water content are unknown, but the concensus is that it is a structural variant of talc with interlayer H2O. The proposed research will determine the complete structure of the 10-A phase, including H2O positions, water content (xH2O) and its hydrogen bonding topology. Experiments will be performed at 10K, 298 K and 5 GPa (at 298 K) for a synthetic sample using neutron powder diffraction.
- NERC Reference:
- NER/B/S/2002/00539
- Grant Stage:
- Completed
- Scheme:
- Small Grants Pre FEC
- Grant Status:
- Closed
- Programme:
- Small Grants
This grant award has a total value of £30,726
FDAB - Financial Details (Award breakdown by headings)
| Total - T&S | Total - Other Costs |
|---|---|
| £2,290 | £28,436 |
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