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Electron Microprobe Mapping as a Tool in Ilmenite Characterisation

Published online by Cambridge University Press:  02 July 2020

Colin MacRae ,
Nick Wilson  and
Mark Pownceby
Colin MacRae
Affiliation:
CSIRO Minerals, Bayview Avenue, Clayton, Australia
Nick Wilson
Affiliation:
CSIRO Minerals, Bayview Avenue, Clayton, Australia
Mark Pownceby
Affiliation:
CSIRO Minerals, Bayview Avenue, Clayton, Australia
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Abstract

The demand for accurate mineralogical data is increasing rapidly as exploration methods, prospect evaluation procedures and metallurgical optimisation studies become more sophisticated. in response to these needs, semi-automated and automated image processing systems which detect minerals using optical microscopy, scanning electron microscopy or electron microprobe microanalysis (EPMA) are becoming increasingly important tools in the exploration, mining and mineral processing industries. CSIRO Minerals has developed an EPMA based imaging (or mapping) method for characterising ilmenite concentrates. The method uses a JEOL 8900R EPMA to collect elemental x-ray maps which are then processed using in-house developed software, Chimage. The mapping procedure differs from traditional automated identification systems in that no detailed a priori knowledge of the mineral phases is required. in addition, Chimage software enables complete processing and interpretation of the data set off-line. Elemental data can be displayed in either scatter or ternary diagrams showing clusters which allow mineral phases to be identified.

Type
Quantitative X-Ray Microanalysis in the Microprobe, in the SEM and in The ESEM:Theory and Practice (Organized by R. Gauvin and E. Lifshin)
Information
Microscopy and Microanalysis , Volume 7 , Issue S2: Proceedings: Microscopy & Microanalysis 2001, Microscopy Society of America 59th Annual Meeting, Microbeam Analysis Society 35th Annual Meeting, Long Beach, California August 5-9, 2001 , August 2001 , pp. 710 - 711
Copyright
Copyright © Microscopy Society of America 2001

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References

References:

1.Harrowfield, I.R., MacRae, CM. and Wilson, N.C. 1993, Microbeam Anal., 2 (Supplement: Proceedings of the 27th Annual MAS Meeting, Los Angeles, CA, July 1993), 547-8.Google Scholar