Fine Structure in XPS and XANES Spectra Acquired from a Series of Sphalerite Samples
Bibliographic record
Abstract
The fine structure of high resolution XPS and XANES S L3,2-edge spectra collected from a series of high quality sphalerite samples are examined and discussed. Each of the sphalerite samples had a characteristic iron concentration and the range was from <0.01 wt % Fe to 14.79 wt% Fe. XPS spectra acquired from sphalerite surfaces leached in ferric sulphate-sulphuric acid media are presented and discussed. XANES near-edge spectra were evaluated by comparing S L3,2 -edge spectra acquired from unreacted sphalerite samples. The XPS data show that the sphalerite dissolution proceeds via the formation of a metal deficient sulphide that evolves into a surface dominated by polysulphide species. The XANES data show that S 2p electron transitions to empty S 3s and S 3d states occur across an energy range above the absorption edge. A chemical shift associated with iron to sulphur bonds is identified and a pre-edge feature associated with S - Fe bonding in sphalerite is identified.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".