Gold mineralization during greenhouse gas fixation: a booklet summary of research on Au-bearing listwanite in the Atlin area, northwestern British Columbia
Bibliographic record
Abstract
Listwanite (carbonate-altered serpentinite) is commonly spatially associated with gold mineralization; it also represents a natural analogue to mineral carbonation, a type of carbon dioxide sequestration. Our studies have resulted in a better understanding of listwanite associated lode-gold deposits and will aid in the design of industrial processes aimed at permanently and safely storing anthropogenic carbon dioxide. Mapping and sampling at Atlin, BC shows that listwanite-alteration is localized along a penetrative fracture system within the ultramafic body and extends up to tens of metres into intact wallrock. Petrography and geochemistry indicate carbonate-alteration proceeded via a three-stage reaction sequence. Serpentinite was converted to magnesite + serpentine which was then converted to magnesite + talc and finally to magnesite + quartz. The overall mineral transformation is the same as proposed industrial carbonation reactions and was accomplished without the alteration of non-volatile chemical species. Geochronology and stable isotopes have helped define the source of carbon dioxide and the constrained the timing and duration of the alteration. Volume changes associated with alteration may play a role in the generation of permeability in advance of carbonation reaction fronts. ln addition, we have modeled magnetic susceptibility as a proxy for listwanite-alteration that has aided in the mapping out of the permeability structure of these systems.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.004 | 0.005 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.007 | 0.002 |
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".