Bibliographic record
Abstract
MacEwan University possesses a collection of eighteen meteorites. As part of this study, the meteorite samples were catalogued to include essential information such as level of shock and weathering, petrographic type, location of the find or fall, mineralogy, and a description of the hand specimen, as well as any data published on individual samples from the peer-reviewed literature. Within the collection is an unclassified meteorite, Northwest Africa (NWA) “X”, believed to be lunar in origin. NWA X has no entry within the Meteoritical Bulletin and literature searches have not turned up any previous studies on this meteorite. This meteorite therefore became the focus of a concentrated effort to classify NWA X based on its mineralogy, microtextures ans composition. Observations were made on a single polished thin section, using a petrographic microscope, a scanning electron microscope, and a Raman spectrometer. These instruments revealed a brecciated texture, displaying high levels of shock metamorphism, as well as several igneous lithologies with grains of anorthite, a Ca-rich feldspar. These attributes are consistent with classification of this meteorite as lunar. Secondary weathering products such as barite, BaSO4, which formed during the meteorite’s residence in the Saharan desert, have also been characterized. This compiled information was then added to the catalogue to complete the meteorite’s entry. Faculty Mentor: Erin Walton and Robert Hilts Department: Earth and Planetary Sciences
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 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 | 0.001 | 0.004 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.025 | 0.017 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.023 | 0.013 |
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".