Characteristics of Auriferous and Barren Fluids Associated with the Proterozoic
Bibliographic record
Abstract
The Contact Lake lode gold deposit is situated in northern Saskatchewan within the Proterozoic La Ronge domain of the Trans-Hudson orogen (-- • 1.9-1.7 Ga). The deposit is associated with a high-angle, reverse shear zone, which crosscuts the central granitic and granodioritic phases of the composite Little Deer Lake pluton. Four temporally distinct stages of veining within the shear zone have been identified on the basis of mineralogical, textural, and crosscutting relationships. The vein mineralogy, the size of the veins, and the extent of alteration distinguishes this deposit from other epigenetic gold deposits in the La Ronge domain. The four discernable vein types (two devoid of gold and two containing gold mineralization) permit the detailed study of fluids responsible for gold mineralization versus barren fluids, which is critical to gold exploration. Stage I veins are the earliest, consist of feldspar and quartz q- biotite, are devoid of gold, and occur as pods and stringers 3 to 100 cm in width and several meters in length. Stage II quartz-biotite veins are 1 to 100 cm wide, are also devoid of gold, and have a narrow (<1 m) alteration envelope consisting of biotite and epidote. Biotite from stage II veins is chemically distinct from biotite in the pluton. Stage III quartz-muscovite-pyrite q- gold veins range in size from 0.1 to 100 cm in width, occur as rotated tension fractures, and have a narrow (<1 m) alteration envelope
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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 | 0.003 | 0.001 |
| Science and technology studies | 0.001 | 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".