Why this work is in the frame
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Bibliographic record
Abstract
Nous avons affine la structure cristalline de la paranatisite, de formule ideale Na 4 [Ti O Ti O (SiO 4 ) 2 ], provenant du complexe alcalin de Khibina-Lovozero, peninsule de Kola, en Russie, a 9.181(2), b 4.800(1), c9.811(2) A, V 432.37(1) A 3 , groupe spatial Pmc2 1 (Z = 2) jusqu'a un residu R de 5.1% en utilisant 651 reflexions observees (I F o I > 4σF) prelevees sur cristal unique avec un diffractometre muni d'un detecteur en serie et un rayonnement MoKα. La formule empirique, le groupe spatial et la cristallochimie de la paranatisite sont revises. Il y a un tetraedre Si unique, trois octaedres Na uniques, et deux pyramides carrees Ti, avec = 1.629, = 2.430 et = 1.971 A. Nous decrivons la structure de la paranatisite en termes de sept feuillets de polyedres, avec emphase sur le role de trois sortes de feuillets. Deux de ces feuillets sont faits de pyramides carrees (TiO 5 ), des tetraedres (SiO 4 ) et des octaedres (NaO 6 ); le troisieme feuillet contient des octaedres (NaO 6 ) et des tetraedres (SiO 4 ). Ces feuillets sont fondes sur un reseaq 4 4 en plan dans lequel les noeuds sont colores pour representer l'occupation des divers cations et des lacunes (□). Un feuillet peut se caracteriser par l'expression [ [ 6 ] M 2 [ 4 ] T 2 Φ 1 2 ], dans laquelle M representerait en general des cations a coordinence [6] ou [5], T represente des cations a coordinence [4], Φ represente un anion (O, F, Cl, OH, H 2 O), et les polyedres (MΦ n ) et (TO 4 ) partagent des coins communs. Un tel feuillet se trouve aussi dans la structure de plusieurs mineraux: sulphohalite, Na 6 [(SO 4 ) 2 ] F CI; natisite, Na 2 [Ti O (SiO 4 )]; grenat, [ [ 8 ] M 3 [ 6 ] M 2 T 3 O 1 2 ]; griphite, (Mn 2 + ,Ca,Na,Li) 2 4 Ca4 Fe 2 + 4 Al 8 (PO 4 ) 2 4 F 8 ; girvasite, Na Ca 2 [Mg 3 (OH) 2 (PO 4 ) 2 {PO 2 (OH) 2 ] (CO 3 )] (H 2 O) 4 ; olmsteadite, K 2 [Fe 2 + 4 Nb 2 O 4 (H 2 O) 4 (PO 4 ) 4 ]; gainesite, Na 2 [Zr 2 Be (PO 4 ) 4 ]; rhomboclase, (H 5 O z ) [Fe (SO 4 ) 2 (H 2 O) 2 ]; et plusieurs mineraux d'uranium apparentes a la meta-autunite, Ca [(UO 2 ) (PO 4 )] 2 (H 2 O) 6 .
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.
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 | 0.001 | 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 | 0.002 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 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 it