Amableite-(Ce), Na<sub>15</sub>[(Ce<sub>1.5</sub>Na<sub>1.5</sub>)Mn<sub>3</sub>]Mn<sub>2</sub>Zr<sub>3</sub>□Si[Si<sub>24</sub>O<sub>69</sub>(OH)<sub>3</sub>](OH)<sub>2</sub>⋅H<sub>2</sub>O, a new eudialyte-group mineral from Saint-Amable Sill, Québec, Canada
Why this work is in the frame
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Bibliographic record
Abstract
Abstract The new eudialyte-group mineral amableite-(Ce), ideally Na 15 [(Ce 1.5 Na 1.5 )Mn 3 ]Mn 2 Zr 3 □Si[Si 24 O 69 (OH) 3 ](OH) 2 ⋅H 2 O, was discovered in a peralkaline pegmatite at Saint-Amable Sill, Montérégie, Québec, Canada. The associated minerals are albite, microcline, aegirine, serandite, natrolite, yofortierite, and an unidentified titanosilicate forming minute grains. Amableite-(Ce) occurs as yellow equant or thick tabular crystals up to 2 mm across. The observed crystal forms are {0001}; the subordinate forms are {11 $\bar{2}$ 0}, {10 $\bar{1}$ 1}, and {10 $\bar{1}$ 0}. Amableite-(Ce) is brittle, with a Mohs hardness of 5. D (meas) = 2.89(1), D (calc) = 2.899 g⋅cm –3 . Amableite-(Ce) is optically anomalously biaxial (+) with α ≈ β = 1.603(2) and γ = 1.608(2). The chemical composition is (wt.%, electron microprobe, H 2 O measured by means of a modified Penfield method): Na 2 O 14.20, K 2 O 0.41, CaO 1.89, MnO 8.25, Fe 2 O 3 2.40, La 2 O 3 3.10, Ce 2 O 3 4.19, Pr 2 O 3 0.16, Nd 2 O 3 0.59, SiO 2 49.41, ZrO 2 11.17, HfO 2 0.24, TiO 2 0.68, Nb 2 О 5 1.54, Cl 0.26, H 2 O 1.70, –O≡Cl –0.06, total 100.13. The crystal structure was determined using single-crystal X-ray diffraction data and refined to R 1 = 0.0423. Amableite-(Ce) is trigonal, space group R 3, with a = 14.1340(3) Å, c = 30.3780(11) Å and V = 5255.6(3) Å 3 . The crystal-chemical formula is (Na 12.93 K 0.27 Ce 0.06 ) Σ13.26 [(Mn 2.49 Ce 0.30 Ca 0.21 ) Σ3.00 (Ce 1.14 Na 1.04 Ca 0.82 ) Σ3.00 ](Mn 1.05 Fe 0.90 □ 1.05 ) Σ3.00 (Zr 2.85 Ti 0.12 Hf 0.03 ) Σ3.00 (□ 0.40 Nb 0.36 Si 0.24 ) Σ1.00 (Si 0.88 □ 0.12 ) Σ1.00 [Si 24 (O 70.44 (OH) 1.56 ) Σ72.00 ][(OH) 2.20 (H 2 O) 1.27 ] Σ3.47 Cl 0.22 ( Z = 3). Infrared and Raman spectra are given. The strongest lines of the powder X-ray diffraction pattern [ d , Å ( I , %)( hkl )] are: 11.34 (51)(101), 7.06 (76)(110), 4.312 (63)(205), 3.783 (38)(033), 3.538 (43)(027, 220), 2.963 (84)( $\bar{3}$ 45), 2.837 (100)(404). The mineral is named after the discovery locality.
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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 | 0.009 | 0.006 |
| Meta-epidemiology (narrow) | 0.020 | 0.019 |
| Meta-epidemiology (broad) | 0.018 | 0.010 |
| Bibliometrics | 0.006 | 0.016 |
| Science and technology studies | 0.008 | 0.008 |
| Scholarly communication | 0.011 | 0.010 |
| Open science | 0.014 | 0.011 |
| Research integrity | 0.011 | 0.016 |
| Insufficient payload (model declined to judge) | 0.001 | 0.011 |
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