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Details of Award

NERC Reference : NER/B/S/2002/00335

Resolving cation disorder in pyroxenes with first-principles NMR spectra.

Grant Award

Principal Investigator:
Dr M Warren, The University of Manchester, Earth Atmospheric and Env Sciences
Co-Investigator:
Professor CJ Pickard, University of Cambridge, Materials Science & Metallurgy
Science Area:
Earth
Overall Classification:
Earth
ENRIs:
Natural Resource Management
Global Change
Environmental Risks and Hazards
Science Topics:
Properties Of Earth Materials
Mantle & Core Processes
Abstract:
This project will determine cation ordering behaviour in pyroxene minerals by predicting 29Si nuclear magnetic resonance (NMR) spectra from first principles. Disorder between Mg, Al and Si can be difficult to measure with X-ray diffraction and when Mg/Al and Al/Si ordering is coupled even NMR spectra are hard to interpret. It will concentrate on the solid solution between CaMgSi2O6 (diopside) and CaA12SiO6, the subject of recent debate in the literature. By simulating the NMR spectra of a number of cation configurations, we will produce a more reliable method for interpreting experimental results, determine the state of order from published spectra and enhance the usefulness of these minerals as geobarometers and geothermometers.
Period of Award:
1 Nov 2002 - 31 Mar 2004
Value:
£7,624
Authorised funds only
NERC Reference:
NER/B/S/2002/00335
Grant Stage:
Completed
Scheme:
Small Grants Pre FEC
Grant Status:
Closed
Programme:
Small Grants

This grant award has a total value of £7,624  

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FDAB - Financial Details (Award breakdown by headings)

Total - T&STotal - Other Costs
£3,583£4,041

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