From structure topology to chemical composition. XI. Titanium silicates: crystal structures of innelite-1<i>T</i>and innelite-2<i>M</i>from the Inagli massif, Yakutia, Russia, and the crystal chemistry of innelite
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Bibliographic record
Abstract
Abstract The crystal structures of two polytypes of innelite, ideally Ba 4 Ti 2 Na 2 M 2+ Ti(Si 2 O 7 ) 2 [(SO 4 ) (PO 4 )]O 2 [O(OH)] where M 2+ = Mn, Fe 2+ , Mg, Ca: innelite-1T, a 5.4234(9), b 7.131(1), c 14.785(3) Å, α 98.442(4), β 94.579(3), γ 90.009(4)°, V 563.7(3) Å 3 , space group P1̄, D calc = 4.028 g/cm 3 , Z = 1; and innelite-2 M , a 5.4206(8), b 7.125(1), c 29.314(4) Å, 0 94.698(3)°, V 1128.3(2) Å 3 , space group P2/c, D calc. = 4.024 g/cm 3 , Z = 2, from the Inagli massif, Yakutia, Russia, have been refined to R values of 8.99 and 7.60%, respectively. Electron-microprobe analysis gave the empirical formula for innelite as (Ba 3.94 Sr 0.06 ) Σ4.00 (Na 2.16 Mn 0.38 2+ Fe 2+ 0.17 Mg 0.15 Ca 0.10 ☐ 0.04 ) Σ3 (Ti 2.97 Nb 0.02 Al 0.02 ) Σ3.01 Si 4.01 (S 1.02 P 0.81 ☐ 0.17 ) Σ2 H 1.84 O 25.79 F 0.21 which is equivalent to (Ba 3.94 Sr 0.06 ) Σ4.00 (Ti 1.97 Nb 0.02 Al0.02) Σ2.01 [(OH 0.99 F 0.21 ) Σ1.20 O 0.80 ], calculated on the basis of 26 (O + F) anions, with H 2 O calculated from structure refinement. The crystal structure of innelite is a combination of a TS (titanium silicate) block and an I (intermediate) block. The TS block consists of HOH sheets (H-heteropolyhedral, O-octahedral) and exhibits linkage and stereochemistry typical for Ti-disilicate minerals of Group III (Ti = 3 a.p.f.u.): two H sheets connect to the O sheet such that two (Si 2 O 7 ) groups link to the trans edges of a Ti octahedron of the O sheet. The I block contains T sites, statistically occupied by S and P, and Ba atoms. In the structures of innelite- 1T and innelite-2 M , TS blocks are related by an inversion centre and a c y glide plane, respectively. HRTEM images show a coherent intergrowth of the two polytypes, together with an as-yet unidentified ∼10 Å phase.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.002 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| 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