Cathodoluminescence microscopy
Device description:
The device operated at GEOPS is a cold-cathode OPEA system coupled to an Olympus BX41-P microscope and a Qimaging – Qicam Fast 1394 camera.
Cathodoluminescence represents a property of material including minerals to emit photons in the visible range when bomdarded by primary electrons. This property might use to identify the mineralogy, to determine different generations or different phases in geological samples including limestones, sandstones, speleothems, bivalve shells. Crystalline growth bands might be observed for different minerals (calcite, quartz, fluorite…). This method represents a classical tool used in petrography to realize paragenesis (i.e. cement stratigraphy) at the scale of the sample or on a broader scale.
Principle of the analysis :
Applicationsfor sedimentary rocks are summarized in Richter et al. (2003).
Richter D. K., Th. Götte, J. Götze, et R. D. Neuser (2003) Progress in application of cathodoluminescence (CL) in sedimentary petrology. Mineralogy and Petrology 79, 127–166. DOI 10.1007/s00710-003-0237-4
Performed analyses:
Main elements linked to cathodoluminescence are the rare earth elements or the Mn/Fe ratio. Intrinsic luminescence may also be observed and is related to defects and crystallography.
Contacts:
Jocelyn BARBARAND – 01.69.15.67.88 - This email address is being protected from spambots. You need JavaScript enabled to view it.
Benjamin BRIGAUD – 01.69.15.49.12 - This email address is being protected from spambots. You need JavaScript enabled to view it.