| № | Abbreviation/Symbol | Description |
| 1 | Ea | Activation energy |
| 2 | SCM | Shrinking core model |
| 3 | XRD | X-ray diffraction |
| 4 | SEM-EDS (or EDX) | Scanning electron microscopy/energy dispersive X-ray spectrometry |
| 5 | EDS-mapping (or EDX-mapping) | X-ray characterization technique that allows extremely rapid elemental concentrations to be gathered and collected as map |
| 6 | ICP-MS | Inductively coupled plasma mass spectrometry |
| 7 | X | Fraction reacted (decimal share) |
| 8 | E | Conversion (%) |
| 9 | Synt. conc | Synthetic concentrate |
| 10 | FeS2/synt. conc | Mass ratio of pyrite to synthetic concentrate in a sample of material before the start of the experiment run |
| 11 | HNO3 | Nitric acid |
| 12 | Cu12As4S13 | Tennantite |
| 13 | CuFeS2 | Chalcopyrite |
| 14 | ZnS | Sphalerite |
| 15 | FeS2 | Pyrite |
| 16 | FeAsS | Arsenopyrite |
| 17 | S° | Elemental sulphur |
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