THE RELATIONSHIP BETWEEN Cu CONTENT AND DISTORTION IN THE ATOMIC STRUCTURE OF MELANTERITE FROM THE RICHMOND MINE, IRON MOUNTAIN, CALIFORNIA
Bibliographic record
Abstract
La structure cristalline de quatre echantillons synthetiques de melanterite, (Fe,Cu)SO 4 7H 2 O, et de six echantillons naturels de melanterite et un de zinc-melanterite provenant de la mine Richmond, situee a Iron Mountain, en Californie, a ete affinee dans le groupe spatial P2 1 /c. Les resultats montrent que la substitution de Cu au Fe au site M2 cause une deformation de l'octaedre pour donner un polyedre a plan cane. Ce comportement serait du a une distorsion de type Jahn-Teller a cause de l'incorporation des ions Cu 2 + (d 9 ) au site M2. En revanche, l'octaedre Ml ne subit aucune deformation semblable. Les analyses de ces echantillons pour le Fe, Cu and Zn avec une microsonde electronique, par absorption atomique et par plasma avec couplage inductif et spectrometrie de masse (ICP-MS) revelent une variabilite importante en composition chimique de la melanterite provenant de cet endroit, mais sans forte correlation entre les proportions de Cu, Fe et Zn, et la couleur du materiau. La melanterite bleu fonce pourrait facilement passer pour la chalcanthite dans les observations preliminaires sur le terrain.
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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 | 0.000 |
| 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) | 0.000 | 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 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".