STRUCTURAL CONTROLS ON THE ARCHEAN TROILUS GOLD-COPPER DEPOSIT, QUEBEC, CANADA
Bibliographic record
Abstract
The Troilus gold-copper deposit is a low-grade, high-tonnage resource, hosted in Archean calc-alkaline intrusive rocks, in the Superior province of Quebec. It is best known for being one of the few Archean analogues of a porphyry Cu-Au deposit, an interpretation with significant implications for both mineral exploration and theories of Archean plate tectonics. Recent research presented here has called into question the prevalent genetic model and proposes instead a two-stage history of mineralization controlled by contrasting structural regimes developed as part of an orogen. Disseminated gold-copper mineralization and associated potassic alteration occur in a deformation corridor between two felsic dikes, emplaced prior to the peak of regional metamorphism. Postpeak metamorphic, high strain sericitic zones with silicified envelopes host quartz veins and a second phase of gold. The present size, grade, and disposition of the orebody is the result of the superposition of these two events, an interpretation that impacts on the genetic model as well as exploration, exploitation, and grade control.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.003 | 0.002 |
| Scholarly communication | 0.002 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.007 | 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".