K feldspar CL spectrum, 20 keV e- beam, Torpy et al. 2020
Measurement details
| Description | CL spectrum of K feldspar from the Tista River, Bangladesh |
| Reference | Torpy et al. 2020 Torpy, A., Wilson, N., MacRae, C., Pownceby, M., Biswas, P., Rahman, M., & Zaman, M. (2020). Deciphering the Complex Mineralogy of River Sand Deposits through Clustering and Quantification of Hyperspectral X-Ray Maps. Microscopy and Microanalysis, 26(4), 768-792 https://doi.org/10.1017/S143192762000135X |
| Date measured | 2018-04-14 |
| Material | K feldspar [ KAlSi3O8 ] |
| Specimen | Tista 2020 D4 Shaker [CSIRO], Teesta River, Bangladesh |
| Specimen temperature | Ambient |
| Technique | Cathodoluminescence (CL) |
| Instrument | JEOL 8500F |
| Probe | 20 keV electron beam |
| Beam current | 69.64 nA |
| Probe diameter | 2 μm |
| Detector name | OceanOptics QEPRO |
| Det. technology | CCD, Si, Peltier cooled |
| Acquisition time | 613.4 s |
| Channel count | 1024 |
| Wavelength range | 199.467 … 970.586 nm |
| Intensity range | -1.04199 … 78.4958 counts |
| Integral | 24111.8 counts |
| Related measurement | K feldspar EDS spectrum, 20 keV e- beam, Torpy et al. 2020 (co-measured) |
| Lines | Al-O- -Al 2.72395 eV (100%), Fe 1.76115 eV (13.9639%), Unspecified 1.39796 eV (26.9682%) |
Composition
| Element | Atoms | At% | Wt% |
|---|---|---|---|
| K | 1 | 7.69 | 14 |
| Al | 1 | 7.69 | 9.69 |
| Si | 3 | 23.1 | 30.3 |
| O | 8 | 61.5 | 46 |
Measurement spectrum
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Measurement image
CL spectrum of K feldspar from the Tista River, Bangladesh