Orthoclase CL/OM measurement, Telfer & Walker 1978
Measurement details
| Reference | Telfer D. J. & Walker G. (1978). Ligand field bands of Mn2+ and Fe3+ luminescence centres and their site occupancy in plagioclase feldspars. Modern Geology, 6(4), 199-210. |
| Material | Orthoclase [ KAlSi3O8 ] |
| Specimen temperature | Ambient |
| Technique | Cathodoluminescence (CL), using an optical microscope |
| Lines | Fe3+ 382 nm, 294.5 nm, 425 nm, 260.4 nm, 441 nm, 245.5 nm, 450 nm, 223.2 nm, 494 nm, 508 nm, 575 nm, 615 nm, 191.1 nm, 657 nm, 161.1 nm |
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 |