REFINEMENT OF THE CRYSTAL STRUCTURE OF ARSENIOPLEITE: CONFIRMATION OF ITS STATUS AS A VALID SPECIES
Why this work is in the frame
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Bibliographic record
Abstract
L'arseniopleite, dont la formule ideale est (Ca,Na) (Na,Pb 2 + ) Mn 2 + (Mn 2 + ,Mg,Fe 2 + ) 2 As 3 O 1 2 est monoclinique, a 6.8113(6), b13.0358(11). c 11.3245(10) A, β 100.25(3)°, V989.5(1) A 3 , 12/aZ = 2; nous l'avons affine jusqu'a un residu R de 2.3% pour 1280 reflexions observees (‖F o ‖≥4σF) mesurees avec un diffractometre Bruker P4 muni d'un detecteur de type CCD (rayonnement MoKα). Le cristal utilise pour le prelevement des intensites des rayons X a par la suite ete analyse avec une microsonde electronique. Dans l'arseniopleite, le site M( 1 ) possede une coordinence octaedrique; il est occupe completement par le Mn 2 + , avec une distance de 2.218 A. Le site M (2) possede aussi une coordinence octaedrique et contient Mn 2 + , Mg et Fe 3 + , la distance etant 2,129 A. Le site X(1) est deplace de sa position speciale ideale, ce qui localement diminue la coordinence de [8] a [7]; X (1) contient surtout le Ca et, a un degre moindre, Na, avec une distance de 2.584 A. Le site X(2) possede une coordinence [8], et la distance est 2.732 A. Le site contient surtout Na, avec des quantites mineures de Pb 2 + et Ba. La formule empirique est (Ca 0 . 6 8 Na 0 . 3 2 ) (Na0.93 Pb 2 + 0 . 0 6 Ba 0 . 0 1 ) Mn 2 + (Mn 2 + 2 1 Mg 0 . 5 2 Fe 3 + o . 2 7 ) (As 2 . 9 8 P 0 . 0 2 ) O 1 2 . L'arseniopleite est donc confirmee comme espece minerale valide, distincte de la caryinite. Dans l'arseniopleite, le Mn 2 + predomine au site M(1),tandis que dans la caryinite, c'estle Ca qui est dominant La composition ideale de ces especes est comme suit: arseniopleite: Ca Na Mn 2 + Mn 2 + 2 As 3 On 1 2 ; caryinite: Ca Na Ca Mn 2 + 2 As 3 O 1 2 .
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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 | 0.000 | 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 | 0.000 |
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