Theory and Practice of Electron Microprobe Analysis
Geochemistry 575
This course covers the principles, techniques and applications of electron microprobe analysis. Topics covered include X-ray theory, principles of electron microprobe analysis, sample preparation techniques, hands-on analysis using the electron microprobe, and techniques of instrument calibration and data reduction. The emphasis is on analysis of geological samples, and participation in this class is required for students who plan to use the electron microprobe as part of their thesis research. The class time will be divided between lecture and hand-on sample preparation and analysis time.
I'm planning to use this class as a user-school for students and others who plan to use the electron microprobe as part of their research programs. The class will be geared towards quantitative analysis of geological, mining, and materials samples, and will cover SEM morphological imaging in less detail. The class will be taught as 6 3-hr long sessions, each consisting of a lecture portion and a hands-on lab portion. There will be a final exam at the end of the course, and the course grade will be based upon this, as well as class participation. The class lab fee will be used to cover cost of xeroxing reading material and machine time used during labs.
Class syllabus
Class 1
Theory and history of x-ray analysis. Introduction to instrumentation. Lab session will consist of a detailed tour of the SX-100 facility, and familiarization with the SX-100 instrument.
Reading: Handout #1 "Electron Probe Microanalysis, sections 2.1 and 2.2
Download Powerpoint file of notes
Class 2
User's introduction to the SX-100. Navigating in Cameca software. What can you do with this instrument, and how?
Reading: Handout #1, sections 2.3, 2.4, and 2.5
Download Powerpoint file of notes
Class 3
Imaging techniques. The theory behind acquisition of scanning electron, backscatter electron, and X-ray images and maps. The lab will include hands-on collection of electron and X-ray images.
Reading: Handout #1, section 2.6
Download Powerpoint file of notes
Class 4
Sample preparation and sample mapping. Lab session will include demonstration of sample mounting and polishing techniques.
Reading: Handout #2 "Sample Preparation"
Download Powerpoint file of notes
Class 5-6
Electron microprobe calibration, data acquisition, and data reduction techniques. Includes discussion of standards, analytical error and assessment of quality of data. Lab session will include demonstration of calibration procedures, quantitative and semi-quantitative analyses.
Reading: Handout #1, sections 2.7, 2.8, 2.9.1-2.9.8
Download Powerpoint file of notes
Class 7
Data management and presentation. Will include discussion and demonstration of procedures for getting your quantitative and imaging data from the Cameca into your thesis or paper. Familiarization with data output formats and basic techniques of image manipulation.
Reading: Handout #1, sections 2.9.9-2.9.12
HANDOUT 1
HANDOUT 2
Example Final #1
Example Final #2
Stable Isotopes in Volcanic Systems
Selected References
These books, along with a number of others, are available in the microprobe lab.
Potts, P.J., 1987. A Handbook of Silicate Rock Analysis. Blackie:Glasgow
Potts, P.J., Bowles, J.F.W., Reed, S.J.B., and Cave, M.R., 1995. Microprobe Techniques in Earth Sciences. Chapman and Hall:London
Reed, S.J.B., 1993. Electron Microprobe Analysis. Cambridge University Press:Cambridge
Reed, S.J.B., 2010. Electron Microprobe and Scanning Electron Microscopy in Geology (2nd edition). Cambridge University Press:Cambridge
For students who plan to use electron microprobe results as a major part of their thesis research, I would recommend purchasing Reed, 2010. This book is available from Amazon for around $30 in paperback, and around $15 in electronic format (http://www.amazon.com).
New Mexico Bureau of Geology & Mineral Resources
New Mexico Institute of Mining & Technology
801 Leroy Place
Socorro, NM 87801-4796
information: (575) 835-5420
fax: (575) 835-6333
http://geoinfo.nmt.edu
The New Mexico Bureau of Geology & Mineral Resources is a research and service division of:
