XONOTLITE IN RODINGITE ASSEMBLAGES FROM THE RONDA PERIDOTITES, BETIC CORDILLERAS, SOUTHERN SPAIN
Bibliographic record
Abstract
Xonotlite, ideally Ca6Si6O17(OH)2, occurs as a major phase in the leucocratic dyke complex that intruded the Ronda peridotites, near the village of Carratraca, Malaga, Spain. Xonotlite occurs as acicular grains in veins parallel to the dykes, as tabular grains along the reaction zone between the serpentinite host-rock and the leucocratic dykes, and as acicular grains replacing hydrogrossular in the matrix of the dykes. It is associated with albite, pectolite and hydrogrossular. Electron-microprobe analyses give a formula (Ca6.05)(Si5.96Al0.01)O17(OH)2 for the acicular and tabular xonotlite, and (Ca6.11)(Si5.92Al0.03)O17(OH)2 for xonotlite replacing hydrogrossular. X-ray powder-diffraction patterns of xonotlite show the presence of two polytypes: M2a2b2c and Ma2b2c. This unusual association (xonotlite, hydrogrossular, pectolite) was produced by the rodingitization of the leucocratic dykes during the serpentinization of the ultramafic massif at low-temperature conditions, 300° to 350°C; it was associated with the production of lizardite in the surrounding serpentinites.
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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.003 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| 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 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".