Bibliographic record
Abstract
A. 3.58 kg pallasite meteorite was found in April 2001, near the mouth of the Saugeen River on Lake Huron (44°30.385′N, 81°22.330′W) by Carl Young of London, Ontario. The specimen is in the form of an irregular triaxial ellipsoid approximately 6.8 cm × 13.4 cm × 18.1 cm. Olivine crystals are visible on the smooth exterior surface which has a thin rind of oxidized iron. The sectioned interior contains olivine crystals with a considerable range in sizes up to approximately 2.5 cm diameter. Larger crystals have angular outlines and some are fractured, although corners and small grains are rounded. Apart from the kamacite and taenite of the metal phase, only small amounts of schreibersite and troilite are present. Analysis of the metal phase by instrumental neutron activation analysis (INAA) yielded Ni 97.4 mg/g, Ga 17.2 μg/g, Ge 77.8 μg/g, Ir 0.137 μg/g, and Au 2.12 μg/g. These values lie within the defined ranges for main group pallasites, except that Ge is ca. 20% higher. Analysis by inductively coupled plasma – mass spectrometry (ICP–MS) yielded Ir 0.0755 μg/g and Au 0.937 μg/g, differences attributed to difference in the mass and heterogeneity of the material analyzed. Olivines were found to have a mean composition of fayalite (Fa) 12.30, within the range of compositions for main group pallasites. Although the Hopewell Mounds of south-central Ohio contain fragments of the Brenham (Kansas) pallasite that were transported there by pre-contact people and are in the same region as the Southampton meteorite find, the apparent glacial transport of the newly found pallasite together with its compositional and textural differences indicate that it is a unique meteorite and the third pallasite found in Canada. The pallasite is named after the community of Southampton in which it was found.
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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 | 0.001 | 0.001 |
| Science and technology studies | 0.004 | 0.001 |
| Scholarly communication | 0.002 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.036 | 0.006 |
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".