Tugtupite CL spectrum, 15 keV e- beam, CSIRO 2021
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Measurement details
| Description | CL spectrum of Tugtupite |
| Reference | Otherwise unpublished luminescence spectra measured by the CSIRO Mineral Resources Microbeam Laboratory, Clayton https://research.csiro.au/microbeam-lab/ |
| Date measured | 2021-08-19 |
| Material | Tugtupite [ Na4BeAlSi4O12Cl ] |
| Analysis technique | Cathodoluminescence (CL) |
| Instrument | JEOL 8500F |
| Probe | 15 keV electron beam |
| Beam current | 9.955 nA |
| Probe diameter | 2 μm |
| Detector name | QE65000 |
| Det. technology | CCD, Si, Peltier cooled |
| Slit width | 200 μm |
| Acquisition time | 330 s |
| Channel count | 1024 |
| Energy range | 1.26882 … 6.19608 eV |
| Intensity range | 100 (normalised intensity) |
| Lines | Fe3+ 1.855 eV (2.9%), S² ion 3.03 eV (100%) |
Specimen details
| Name | P-0407 Tugtupite |
| Owner | CSIRO |
| Locality | Tugtup agtakôrfia, Tunulliarfik Fjord, Ilímaussaq complex, Kujalleq, Greenland, Denmark |
Specimen image
Optical micrograph of Tugtupite [Na4BeAlSi4O12Cl] in 'P-0407 Tugtupite' standard (CSIRO) from Tugtup agtakôrfia, Tunulliarfik Fjord, Ilímaussaq complex, Kujalleq, Greenland, Denmark. Instrument: Olympus BX-51. Date: March 2026.
(C) 2026 CSIRO Mineral Resources. All rights reserved.
Composition
| Element | Atoms | At% | Wt% |
|---|---|---|---|
| Na | 4 | 17.4 | 19.7 |
| Al | 1 | 4.35 | 5.77 |
| Be | 1 | 4.35 | 1.93 |
| Si | 4 | 17.4 | 24 |
| O | 12 | 52.2 | 41 |
| Cl | 1 | 4.35 | 7.58 |
| Total | 23 | 100 | 100 |
Measurement image
CL spectrum of Tugtupite