THE COMPRESSIONAL BEHAVIOR OF P4/n VESUVIANITE
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Bibliographic record
Abstract
High-pressure in situ powder-diffraction data were collected on a sample of P4/n vesuvianite from Val d’Ala, Piemonte, Italy, between room pressure and 13.2 GPa. No deviation from tetragonal symmetry was found at any pressure. The refined unit-cell parameters show that the highest compressibility is along the c axis [a = 2.00(4)•10–3 GPa–1 and c = 2.42(7)•10–3 GPa–1]. Such behavior, which is inverse to that observed with increasing temperature, is related to weaker bonding along the 4-fold axis owing to the presence of hydrogen bonding and vacancies. A third-order Birch–Murnaghan equation of state was fitted to the retrieved volumes, with V0 = 2859.47(7), KT0 = 125.5(1.3) GPa and K’T0 = 4.8(3). The compressibility of P4/n vesuvianite probably applies to all members of the vesuvianite family.
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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 | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 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 it