Mobilization of komatiite-associated Ni-Cu-(PGE) mineralization in the Southern Manneville fault zone, Southern Abitibi subprovince, Quebec
Bibliographic record
Abstract
The Cubric showing and Marbridge deposit occur in the 2714 ± 2 Ma La Motte-Vassan Formation, 20-25 km north of Malartic, Québec. Mineralization at the Cubric showing is hosted by a silicate-magnetite facies iron formation as well as gabbro, but the high Ni/Cu and Ir/Pd ratios of the mineralization suggest that it formed from a komatiitic magma, similar to the mineralization at the historic Marbridge deposit. Normal abundances of most metals in the mineralization in the gabbro suggest that it was mechanically mobilized into the gabbro as a high-temperature monosulfide solid solution, whereas low abundances of Cr and Ir-Ru-Rh in the mineralization in the iron formation suggest that Ni-Cu-Pt-Pd-Au and other metals were mobilized into the iron formation by metamorphic-hydrothermal fluids. The host rocks and country rocks have experienced two phases of deformation during regional metamorphism, and it is likely that the mineralization was mobilized from unexposed/eroded mineralized cumulate komatiites during this deformation and metamorphism, which occurred after emplacement of the younger 2680 ± 1.5 Ma gabbro.
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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) | 0.003 | 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".