Temporal and spatial distribution of magmatic Cr-(PGE), Ni-Cu-(PGE), and Fe-Ti-(V) deposits in the Bird River--Uchi--Oxford-Stull--La Grande Rivière--Eastmain domains: a new metallogenic province within the Superior Craton
Bibliographic record
Abstract
Chromium and Fe-Ti-(V) mineralization in ultramafic-mafic intrusions is known to occur in several areas of the Superior Province, but was considered to be of marginal significance until the discovery of world-class Cr deposits and potentially significant Fe-Ti-(V) mineralization in the McFaulds Lake greenstone belt ("Ring of Fire") of northern Ontario. Cr-(PGE), Ni-Cu-(PGE), and Fe-Ti-(V) deposits/occurrences in the northern part of the Superior Province occur predominantly within Meso to Neoarchean supracrustal successions along the margins and within the interiors of the Bird River-Uchi-Oxford-Stull-La Grande Rivièreastmain domains (i.e. BUOGE domains). These domains define a new metallogenic province within the Superior Province characterized by the presence of major Cr-(PGE) with Ni-Cu-(PGE) and Fe-Ti-(V) metal associations that appear to be fundamentally different from other parts of the Craton, such as the Abitibi greenstone belt or the apparently relatively unmineralized North Caribou core, Island Lake, and Goudalie domains. Despite the fact that only the Cr-(PGE) deposits and Ni-Cu-(PGE) deposits (Eagle's Nest) in the McFaulds Lake greenstone belt appear to be potentially economic, the presence of a significant amount of Cr-(PGE) mineralization across the BUOGE domains highlights the prospectivity of these regions of the Superior Province.
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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 | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".