COARSE-GRAINED CABRIITE FROM NORIL'SK, RUSSIA
Bibliographic record
Abstract
La cabriite, dont la composition ideale est Pd 2 SnCu, n'a ete signalee qu'a cinq endroits au monde depuis sa decouverte dans le camp minier de Noril'sk-Talnakh, dans le nord-ouest de la Russie. Nous resumonsles decouvertes anterieures a propos de la cabriite, et nous fournissons une description additionnelle d'un cristal relativement grossier (0.50 X 0.35 mm) de forme ovale, decouvert dans un concentre de sulfures et de mineraux du groupe du platine provenant du district de Noril'sk, Ce grain est entoure de cubanite et de chalcopyrite, recoupees par des veinules eparses de galene et, en bordure, des cristaux millimetriques de sperrylite. Le grain de cabriite est sensiblement homogene, les resultats de dix analyses demontrant que le Pt et le Sb sont les seuls elements mineurs d'importance. La cabriite contient, en moyenne, 4.87% de Pt et 0.82% de Sb (base ponderale). Sa formule est (Pd 1 . 9 2 Pt 0 . 1 0 )(Sn 0 . 9 5 Sb 0 . 0 3 )Cu 0 . 9 9 . Le Pt occupe le site Pd, et le Sb remplace le Sn, quoiqu'a un degre moindre. La cabriite contient de tres petits domaines (1-6 μm) arrondis de geversite bismuthifere, Pt(Sb,As,Bi) 2 , ayant Sb > Bi, et contenant l'arsenic en tres petites quantites. Lui sont associes cubanite, chalcopyrite, et sperrylite, qui sont aussi assez pures et homogenes; la talnakhite et la cubanite exsolvees de la chalcopyrite sont moins homogenes, et l'alliage Au-Ag, abondant, est assez variable dans sa composition. Le grain de cabriite possede un lisere partiel d'argent natif (<1% Au, en poids), non distinguable de l'argent qui remplit une fracture cassante a la bordure du crystal adjacent de sperrylite, mais assez distinct de l'argent aurifere avoisinant a grain grossier (1.5-24% Au, par poids). Les relations texturales de l'echantillon, comparees aux descriptions deja dans la litterature, confirment la formation tardive de la cabriite et de l'alliage associe a Au-Ag.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 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 source (direct Gemma or distilled Codex), 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".