SUPERGENE ENRICHMENT OF PRIMARY Cu-Ag ASSEMBLAGES IN Ag AT THE PARDOS DEPOSIT, IBERIAN RANGE, SPAIN
Bibliographic record
Abstract
The Pardos deposit consists of a system of Cu–Ag veins located 185 km southwest of Zaragoza, Spain, in the western (Castilian) branch of the Iberian Range, within one of the scattered massifs or inliers of Ordovician and Silurian rocks. The ore assemblage and textures at the Pardos deposit reflect vertical zoning: the lower level (La Estrella mine), contains tetrahedrite isotypic series minerals (TISM), famatinite–luzonite series minerals, pyrite, chalcopyrite, and minor galena and sphalerite, whereas the upper level (Majadillas mine), shows an “epithermal association” composed by tetrahedrite, Ag-rich tetrahedrite, freibergite, pyrargyrite, stephanite, polybasite and acanthite. Textural and compositional lines of evidence suggest the dissolution of tetrahedrite and reprecipitation of Ag-rich sulfosalts promoted by supergene enrichment with a remobilization of Ag. The occurrence of sharp interfaces between the parent mineral and the secondary phases, the structural collapse of the tetrahedrite cores by dissolution, and the development of porosity and numerous fine cracks within the grains are consistent with coupled dissolution-and-reprecipitation reactions.
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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 | 0.002 | 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".