Bibliographic record
Abstract
At Bǎit ¸a Bihor (formerly Rézbánya), Romania, the type locality szaibelyite occurs in magnesian skarns hosted by the dolomitic marbles of Mesozoic age, near the contact with a granite -granodiorite body of Upper Cretaceous -Paleogene age.Associated minerals include calcite, dolomite, magnesite, kotoite, suanite, ludwigite, fluoborite, fluorite, chondrodite, norbergite, magnetite, brucite, chrysotile, lizardite, clinochlore, lepidocrocite and goethite.Szaibelyite from Bǎit ¸a Bihor is extremely close to the endmember composition [Mg 2 (B 2 O 4 OH)(OH)].Up to 0.88 mol.% sussexite (the Mn end-member), 1.06 mol.%Fe 2 (B 2 O 4 OH)(OH) and 0.20 mol.%Ca 2 (B 2 O 4 OH)(OH) may be deduced on the basis of combined wet-chemical and electron-microprobe analyses.The mineral exhibits very slight fluorine contents [X F = F/(F + OH) ≤ 0.01].Selected-area electron imaging supported by X-ray powder patterns indicate that the szaibelyite from Bǎit ¸a Bihor is monoclinic, space group P2 1 /a.The mean unit-cell parameters are a 12.559( 18), b 10.402(12), c 3.132(8) Å and  95.77(33)°.Thermogravimetric curves gave a smooth and continuous weightloss of up to 3.39 wt.% H 2 O between 150 and 600°C, in reasonable agreement with the results obtained by loss on ignition.The complete dehydration occurs between 650 and 700°C, the breakdown product being the monoclinic (P2 1 /a) polymorph of Mg 2 (B 2 O 5 ).Two OH-stretching bands in the infrared absorption spectra of the mineral, at ~3560 and ~2510 cm -1 , respectively, are indicative of two distinct hydrogen positions in the structure.The IR spectra do not systematically show absorption systematically at ~1630 cm -1 (bending mode of H 2 O), suggesting that the mineral does not contain molecular H 2 O. Szaibelyite from Bǎit ¸a Bihor is estimated to have developed at temperatures of 160-450°C, pressures of 0.6-3 kbar, at relatively high activity of fluorine, and at low potentials of iron and manganese.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.003 | 0.003 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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".