NEW DATA ON SZAIBELYITE FROM THE TYPE LOCALITY, BAITA BIHOR, ROMANIA
Why this work is in the frame
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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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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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.002 | 0.000 |
| 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 it