Ferroinnelite, Ba<sub>4</sub>Ti<sub>2</sub>Na(NaFe<sup>2+</sup>)Ti(Si<sub>2</sub>O<sub>7</sub>)<sub>2</sub>[(SO<sub>4</sub>)(PO<sub>4</sub>)]O<sub>2</sub>[O(OH)], a new mineral of the lamprophyllite group (seidozerite supergroup) from the Kovdor alkaline massif, Kola Peninsula, Russia: description and crystal structure and new data for innelite, Ba<sub>4</sub>Ti<sub>2</sub>Na(NaMn<sup>2+</sup>)Ti(Si<sub>2</sub>O<sub>7</sub>)<sub>2</sub>[(SO<sub>4</sub>)(PO<sub>4</sub>)]O<sub>2</sub>[O(OH)]
Bibliographic record
Abstract
Abstract Ferroinnelite, Ba 4 Ti 2 Na(NaFe 2+ )Ti(Si 2 O 7 ) 2 [(SO 4 )(PO 4 )]O 2 [O(OH)], is a new mineral from the Phlogopite deposit, Kovdor alkaline massif, Kola Peninsula, Russia. In an agpaitic pegmatite, ferroinnelite occurs as transparent elongated platy to tabular crystals up to 0.15 mm long. Associated minerals are cancrinite, orthoclase, aegirine–augite, magnesio-arfvedsonite, golyshevite and fluorapatite. The mineral is yellow to yellow brown with a vitreous lustre and a white streak, D calc. is 4.088 g/cm 3 . Ferroinnelite is triclinic, space group P $\bar 1$ , a = 5.3994(8), b = 7.09239(13), c = 14.7345(4) Å, α = 98.4086(19), β = 94.3275(18), γ = 90.0133(13)°, V = 556.56(8) Å 3 . The chemical composition of ferroinnelite is SO 3 5.47, Nb 2 O 5 0.45, P 2 O 5 4.59, ZrO 2 0.13, TiO 2 16.91, SiO 2 17.55, Al 2 O 3 0.06, BaO 42.83, SrO 1.01, FeO 3.34, MnO 0.97, CaO 0.09, MgO 0.64, K 2 O 0.01, Na 2 O 4.47, H 2 O 1.11, F 0.15, O = F –0.06, total 99.72 wt.%, with H 2 O calculated from structure refinement. The empirical formula calculated on 26 (O + F) apfu is (Na 1.95 Fe 2+ 0.64 Mg 0.21 Mn 2+ 0.19 Ca 0.02 ) Σ3.01 (Ba 3.84 Sr 0.13 Na 0.03 ) Σ4.00 (Ti 2.91 Nb 0.05 Al 0.02 Zr 0.01 Mg 0.01 ) Σ3.00 Si 4.02 S 0.94 P 0.89 H 1.70 O 25.89 F 0.11 , Z = 1. The crystal structure was refined to an R 1 index of 7.45% from 4485 unique reflections ( F o > 4σ F ). The structure is a combination of a TS (Titanium Silicate) and an I (intermediate) blocks. The TS block consists of HOH sheets (H – heteropolyhedral and O – octahedral). The O sheet is composed of Ti-, Na- and (Na,Fe 2+ )-octahedra, the H sheet, of [5] Ti-polyhedra and Si 2 O 7 groups. The I block contains T sites, statistically occupied by S and P, and Ba atoms. Ideal compositions of the TS and I blocks are {Ti 2 Na(NaFe 2+ )Ti(Si 2 O 7 ) 2 O 2 [O(OH)]} 3– and {Ba 4 [(SO 4 )(PO 4 )]} 3+ . Ferroinnelite is a new member of the lamprophyllite group of the seidozerite supergroup. It is isostructural with innelite-1 A , Ba 4 Ti 2 Na(NaMn 2+ )Ti(Si 2 O 7 ) 2 [(SO 4 )(PO 4 )]O 2 [O(OH)]. Ferroinnelite and innelite are related by the following cation substitution at the M O 3 site in the O sheet: Fe 2+ fer ↔ Mn 2+ inn . IR and Raman spectroscopies confirm presence of OH and H 2 O groups in ferroinnelite and innelite.
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How this classification was reachedexpand
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 | 0.019 | 0.012 |
| Meta-epidemiology (narrow) | 0.034 | 0.031 |
| Meta-epidemiology (broad) | 0.029 | 0.016 |
| Bibliometrics | 0.012 | 0.027 |
| Science and technology studies | 0.016 | 0.019 |
| Scholarly communication | 0.021 | 0.023 |
| Open science | 0.025 | 0.023 |
| Research integrity | 0.021 | 0.028 |
| Insufficient payload (model declined to judge) | 0.001 | 0.005 |
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; both teacher heads agree on what is shown here.
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".