A Mössbauer study of the color of Roman pottery from the Leptiminus archaeological site, Tunisia
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Bibliographic record
Abstract
Abstract Variations in the color of pottery, white coatings on amphora, and dark edges on coarseware were produced by Roman potters at Leptiminus, Tunisia. The oxidation state and coordination of iron in different colored regions of the pottery was determined using Mössbauer spectroscopy. The basic red color of most pottery is due to hematite produced under oxidizing conditions in the kilns. The white surficial coloration, enhanced by treating the clay with salt water, is caused by the incorporation of iron into clinopyroxene instead of iron oxides. Recent pottery from Moknine, Tunisia, which was formed with clay mixed with either fresh or salt water, illustrates the effect of NaCl in producing the white coating. Black edges on Roman coarseware relate to high content of maghemite, probably produced under reducing conditions in the kiln. © 2002 Wiley Periodicals, Inc.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.003 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.014 | 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 it