Polymetallic U-Ag veins at Port Radium, Great Bear magmatic zone, Canada: main botryoidal pitchblende stage cuts 1.74 Ga diabase dykes and has REE signatures diagnostic of unconformity-type deposits
Bibliographic record
Abstract
The Eldorado mine at Port Radium produced 6,223 tonnes of U and 8 million ounces of Ag from 1942 - 1982, with smaller amounts of Ra, Co, Ni, Cu, Ag and Bi. Mining reached a depth of 511 m. The adjacent Echo Bay mine produced 25.5 million ounces of Ag. The metals were deposited along steep, NEtrending, late tectonic brittle faults in andesitic volcanics of the Great Bear magmatic zone (GBmz), a 1.87-1.84 Ga continental arc along the west margin of Wopmay Orogen. The brittle faults were healed by quartz veins with sparse chalcopyrite and pitchblende, then cut by 1.74 Ga Cleaver diabase dykes. Fault reactivation offset the dykes and led to 5 stages of polymetallic veins. The veins are cut by a gently dipping sheet of 1.59 Ga Western Channel diabase. The Lower Hornby Bay Group was deposited between the two diabase events, and was later eroded at Port Radium.
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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 | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".