Nolzeite, Na(Mn,□)<sub>2</sub>[Si<sub>3</sub>(B,Si)O<sub>9</sub>(OH)<sub>2</sub>]·2H<sub>2</sub>O, a new pyroxenoid mineral from Mont Saint-Hilaire, Québec, Canada
Why this work is in the frame
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Bibliographic record
Abstract
Abstract Nolzeite, Na(Mn,□) 2 [Si 3 (B,Si)O 9 (OH) 2 ]·2H 2 O, is a new mineral found in altered sodalite syenite at the Poudrette quarry, La Vallée-du-Richelieu, Montérégie (formerly Rouville County), Québec, Canada. Crystals are colourless to pale green and are acicular with average dimensions of 5 μm × 8 μm × 55 μm. They occur as radiating to loose, randomly oriented groupings within vugs associated with aegirine, nepheline, sodalite, eudialyte-group minerals, analcime, natron, pyrrhotite, catapleiite, steedeite and the unidentified mineral, UK80. Nolzeite is non-pleochroic, biaxial, with n min = 1.616(2) and n max = 1.636(2) and has a positive elongation. The average of six chemical analyses gave the empirical formula: Na 1.04 (Mn 1.69 □ 0.24 Fe 0.05 Ca 0.02 ) ∑=2.00 (Si 2.96 S 0.04 ) ∑=3.00 (B 0.70 Si 0.30 ) ∑=1.00 O 9 (OH) 2 ·2H 2 O based on 13 anions. The Raman spectrum shows six distinct bands occurring at ∼3600–3300 cm –1 and 1600–1500 cm –1 (O–H and H–O–H bending), 1300–1200 cm –1 (B–OH bending), 1030–800 cm –1 (Si–O–Si stretching) as well as 700–500 cm –1 and 400–50 cm –1 (Mn–O and Na–O bonding, respectively). The FTIR spectrum for nolzeite shows bands at ∼2800 –3600 cm –1 (O–H) stretching, a moderately sharp band at 1631 cm –1(H–O–H) bending, strong, sharp bands at ∼650 –700 cm –1 , ∼800 –840 cm –1 , and ∼900–1100 cm –1 (Si–O and B –O) bonds. Nolzeite is triclinic, crystallizing in space group P with a = 6.894(1), b = 7.632(2), c = 11.017(2) Å, α= 108.39(3), β= 99.03, γ = 103.05(3)°, V = 519.27 Å3, and Z = 2. The crystal structure was refined to R = 12.37% and w R 2 = 31.07% for 1361 reflections ( F o > 4σ F o ). It is based on chains of tetrahedra with a periodicity of three (i.e. a dreier chain) consisting of three symmetrically independent SiO 4 tetrahedra forming C -shaped clusters closed by BO 2 (OH) 2 tetrahedra, producing single loop-branched dreier borosilicate chains. The chains are linked through shared corners to double chains of edge-sharing MnO 5 (OH) octahedra. Nolzeite is a chain silicate closely related to steedeite and members of the sérandite–pectolite series. Paragenetically, nolzeite is late-stage, probably forming under alkaline conditions and over a narrow range of low pressures and temperatures.
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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 | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.004 | 0.003 |
| Meta-epidemiology (broad) | 0.004 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.003 | 0.002 |
| Scholarly communication | 0.003 | 0.002 |
| Open science | 0.004 | 0.003 |
| Research integrity | 0.002 | 0.003 |
| Insufficient payload (model declined to judge) | 0.001 | 0.002 |
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