Carleton College Geology Department houses an outstanding suite of analytical instruments. These instruments are utilized by introductory and upper-level geology classes, as well as students and faculty for research.
To inquire about academic and non-academic use of facilities, email Jonathon Cooper to discuss your needs and to complete necessary instrument and lab safety training.
The Geology department utilizes a JEOL IT500HR FESEM equipped with an Oxford X-Max EDS, Oxford Symmetry EBSD system and Delmic SPARC CL detection systems. To sign up for instrument time, use the calendar to determine when the instrument is available from 6 am–10 pm, Monday thru Friday in 2-hour blocks — make an appointment. To inquire about non-academic usage, please email Jonathon Cooper and Cameron Davidson
Instruments
- JEOL IT500HR Field Emission Scanning Electron Microscope
- Oxford Aztec X-ray Energy Dispersive Spectrometer
- Oxford Aztec Symmetry Electron Backscatter Diffraction Detector
- Delmic SPARC Cathlodoluminescence Detector
JEOL IT500HR Field Emission Scanning Electron Microscope
The instrument is capable of imaging specimens at high vacuum and also in a variable pressure range from 1-270 Pa. This allows non-conducting specimens to be imaged without coating with a conductive film. There is a secondary electron detector for use in high vacuum only, and backscattered and absorbed electron detectors, which can be used in both high vacuum and variable pressure modes.
- Detectors: Secondary, Backscattered
- High resolution secondary electron image resolution: 1.5nm (HV mode only)
- Low vacuum backscattered electron image resolution: 1.8nm
- Magnification range: 5x – 600000x
- LV pressure range: 10 – 150Pa
- Maximum specimen size: 150mm diameter x 20mm high
- Specimen Tilt/Rotation: -10 – 90 degrees, 360 degree rotation
- 5-axis specimen stage limits: 125mm (X), 100mm (Y)
Oxford Aztec EDS – Chemical analysis
- X-Max80 SDD EDS Detector
- Detector capable of detecting Be to Pu
- EDS analysis at a point, box or over user-defined regions
- EDS Large area mapping
Delmic Sparc Compact – Cathodoluminescence Imaging System
- Sensitive to ultraviolet, visible and near infrared wavelengths enabling panchromatic cathodoluminescence imaging of a wide range of minerals, ceramics, and other materials
- Use to reveal macro- and micro-texture in sedimentary rocks including: sediment source, degree of compaction, diagenetic history, differentiation of authigenic and detrital minerals, cementation history, and provenance
To sign up for instrument time, use the calendar to determine when the instrument is available from 6 am – 10 pm, Monday thru Friday in 2-hour blocks – make an appointment. To inquire about non-academic usage, please email Jonathon Cooper and Cameron Davidson