Copper-nickel-platinum group element mineralization and petrogenesis of mafic-ultramafic intrusions in the western Quetico and Wabigoon Subprovinces, northwestern Ontario, Canada
Bibliographic record
Abstract
This project focused on Cu-Ni-PGE mineralization and petrogenesis of mafic-ultramafic intrusions in the western Quetico and Wabigoon Subprovinces of the Superior Province. Two intrusions were singled out for detailed study: the Legris Lake Complex, part of circular series of mafic-ultramafic complexes, which includes the Lac des Iles Complex, located in the Wabigoon Subprovince, and the Samuels Lake Intrusion, part of the Quetico Intrusions, located in the Quetico Subprovince. Legris Lake complex. The Legris Lake Complex is a northeast-trending 7.3 by 3.5 kilometre mafic-ultramafic intrusive complex. It is part of a circular series of mafic-ultramafic complexes, the most notable of which is the Lac des Iles Complex, which is host to Canada's only palladium mine. The Legris Lake Complex consists of mostly gabbroic rocks, but also contains lithologies ranging from anorthosite to wehrlite, and, variety of igneous breccias. The gabbroic rocks vary from melanogabbro to porphyritic leucogabbro. Medium grained, massive, biotite-rich leucogabbro is the predominant exposed variety and probably caps the complex. Samuels Lake intrusion. The Samuels Lake intrusion, ca 2688 +6/-5 Ma, located in the centre of the Quetico Subprovince possesses a northeast-southwest elliptical form (500 m by 250 m) and displays rough concentric zoning with a wehrlite core grading into clinopyroxenite border zone, which has been intruded by later homblendite. Olivine-rich rocks commonly contain blebs of pyrrhotite + chalcopyrite + pentlandite with anomalous PGE values, ranging from 50 to 300 ppb, whereas the clinopyroxenite border zone contains disseminated to blebby PGE-rich Cu-sulphide mineralization. (Abstract shortened by UMI.)
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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 | 0.002 |
| Science and technology studies | 0.002 | 0.001 |
| 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".