- Element distribution map, showing Mg in a ankaramite (ol + cpx phyric basanite) from the Deccan province. The zoned grain is a pyroxene c. 500µm in length (the highest concentrations being shown in red).
The electron microprobe is capable of quantitative analysis with accuracy of about ±1% for major elements, and detection limits ranging from 20 to 1000 ppm can be attained. The spatial resolution is approximately 1 µm.
Element distribution line scans and 2-dimensional 'maps' can be produced as well as point analyses.
Our microprobe is a Cameca SX-100 with one energy dispersive and 5 wavelength dispersive spectrometers, capable of automated quantitative analysis and elemental mapping of all elements from B to U.
Enquiries about using it should be addressed to Iris Buisman.
Further details and bookings (for Cambridge users).