Petrography, geochemistry, and petrogenesis of Li-enriched and Li-poor aplite–pegmatites in the Preissac–Lacorne area, Abitibi subprovince, Canada
Bibliographic record
Abstract
The Preissac–Lacorne area, within the Archean Abitibi granite–greenstone belt, hosts numerous Li-enriched and Li-poor aplite–pegmatites. Both suites are strongly peraluminous, calc-alkaline, late- to post-tectonic composite intrusions cutting through the monzogranite–granodiorite suite and associated volcano-sedimentary sequences along the Manneville Fault System (MFS). The Li-enriched aplite–pegmatites, products of at least two distinct mineralizing events, are more highly differentiated (K/Rb = 18) than their Li-poor counterparts (K/Rb = 26) and contain three generations of spodumene formed through magmatic to magmatic–hydrothermal processes. Both suites likely represent multiple generations of aplite–pegmatites, including those derived from the S-type Lamotte monzogranite and those formed by shear zone-controlled anatexis along the MFS. Field observations indicate that shear-related partial melting of metasedimentary and granodioritic rocks generated Li-poor aplite–pegmatites, whereas partial melting of the monzogranite under similar conditions produced Li-enriched varieties. Overall, both suites appear genetically linked to episodic activation of the MFS prior to and during the waning stages of regional deformation.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 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) | 0.001 | 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 teacher head, 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".