Alteration features and geochemical signatures of the Maybelle River uranium zone, Athabasca Basin, Alberta
Bibliographic record
Abstract
The Maybelle River uranium zone comprises several drill intersections up to 20.9% U3O8 over 5 m, in basal Fair Point Formation just above the unconformity with a paleoweathered graphitic mylonitic zone in gneissic basement. Detailed petrography of selected drill-core samples documents an alteration halo with the following similarities to those surrounding polymetallic uranium deposits in the eastern Athabasca Basin of Saskatchewan: massive clay replacement, quartz dissolution and sandstone collapse, drusy quartz- and pyrite-lined fractures, chlorite overprinting, and bleaching. Regional interstitial illite and dickite are replaced by chlorite and additional illite in strata surrounding the uraniferous zone. Lithogeochemistry of drill core reveals a polymetallic ore assemblage: uranium, arsenic, nickel, boron, phosphorus, molybdenum, and cobalt. These studies confirm the geological environment of the western part of Athabasca Basin as favourable for major unconformity-related deposits as in eastern and central parts of the basin, and provide guides to further exploration.
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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 | 0.001 |
| 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) | 0.001 | 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".