Arsenoflorencite-(La), a new mineral from the Komi Republic, Russian Federation: description and crystal structure
Bibliographic record
Abstract
(La), spessartine and monazite–gasparite-group minerals in Mn-rich nodules in metasediments. Arsenoflorencite-(La) forms oran-ge–red to pink rhombohedral, pseudocubic or tabular crystals up to about 0.2 mm across. The dominant forms observed are {001} and {102}. The crystals have a vitreous lustre, are transparent to translucent, have a very light pink streak and are non-fluorescent. Mohs hardness is about 3.5 (estimated). The fracture is uneven and the tenacity is brittle. Arsenoflorencite-(La) has fair cleavage on {001}. Crystals are uniaxial (þ), with the indices of refractiono 1.740(5) and e 1.750(5), measured in white light, and are nonpleochroic. The empirical formula (based on 14 O atoms) is: (La0.56Ce0.18Nd0.12Pr0.04Sr0.09Ca0.03)1.02(Al2.94Fe0.06)3.00(As1.80P0.21)2.01H5.95O14. The simplified formula is LaAl3(AsO4)2(OH)6. Arsenoflorencite-(La) is trigonal, space group R3m, a 7.0316(3), c 16.5151(8) Å, V 707.16(5) Å3 and Z 3. The crystal structure was solved from single-crystal X-ray diffraction data and refined to R1 0.0112 on the basis of 287 unique reflections with Fo. 4sF and R1 0.0116 for all 293 reflections. The five strongest lines in the powder X-ray
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".