THE CRYSTAL STRUCTURE OF SULFOSALTS WITH THE BOXWORK ARCHITECTURE AND THEIR NEW REPRESENTATIVE, Pb15-2xSb14+2xS36Ox
Why this work is in the frame
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Bibliographic record
Abstract
The new monoclinic phase with a structure-determined formula Pb 15−2 x Sb 14+2 x S 36 O x (Z = 4) was found only as a single grain in a micro-intergrowth of sulfosalts in the Klacianka Sb deposit, Low Tatra Mountains, Slovakia. Unit-cell dimensions are a 48.293(15), b 4.1107(13), c 34.223(11) A, β 106.168(5)°, space group C 2 /m. There are 11 independent lead sites, 13 antimony sites, and five mixed (Pb, Sb) sites, 36 sulfur positions, and a single, approximately half-occupied oxygen site. Some coordination polyhedra of antimony exhibit split Sb sites, with positional parameters refined independently. Because of the intergrowth, the final R 1 value remained at 23.5%. It does not reflect visibly upon positional parameters, but has an adverse influence on the occupancy of mixed positions. Until further occurrences are documented, it remains an unnamed mineral. It is a typical sulfosalt representative of the category of boxwork structures. Other structures of this category comprise pellouxite, marrucciite, vurroite, neyite, and several synthetic sulfosalts. Sulfosalts with a boxwork structure are formed by a combination of three types of structural modules: continuous walls with a complex structure of rod-layer type; these walls are interconnected by partitions, and the resulting boxlike channels are filled by another type of structure rods. In its entirety, this group demonstrates a number of types for each of these kinds of module. The “core” group of Pb–Sb sulfosalts, scainiite, pillaite, pellouxite, rouxelite, a synthetic Mn–Pb sulfosalt, and Pb 15−2 x Sb 14+2 x S 36 O x described in this study, depend on the presence of minor amounts of oxygen in the structures. Oxygen forms a part of a kermesite-like configuration that generates a pronounced change of the local structural arrangement and, in this way, makes the boxwork framework possible. Several REE sulfides form boxwork structures as well.
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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 | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it