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Record W2810345668 · doi:10.1180/mgm.2018.130

Ferri-fluoro-katophorite from Bear Lake diggings, Bancroft area, Ontario, Canada: a new species of amphibole, ideally Na(NaCa)(Mg<sub>4</sub>Fe<sup>3+</sup>)(Si<sub>7</sub>Al)O<sub>22</sub>F<sub>2</sub>

2018· article· en· W2810345668 on OpenAlex
Roberta Oberti, Massimo Boiocchi, F. C. Hawthorne, Neil A. Ball, Robert F. Martin

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
aboutThe title or abstract carries a Canadian signal from the geographic lexicon.

Bibliographic record

VenueMineralogical Magazine · 2018
Typearticle
Languageen
FieldMaterials Science
TopicCrystal Structures and Properties
Canadian institutionsMcGill UniversityUniversity of Manitoba
Fundersnot available
KeywordsAmphiboleTitaniteSanidineAugiteCalciteAegirineGeologyPhlogopiteStructural formulaMineralogyMineralNephelineCrystallographyLeuciteSilicicGeochemistryZirconChemistryQuartzVolcano

Abstract

fetched live from OpenAlex

Abstract Ferri-fluoro-katophorite is the second species characterised involving the rootname katophorite in the sodium–calcium subgroup of the amphibole supergroup. The mineral and its name were approved by the International Mineralogical Association Commission on New Minerals, Nomenclature and Classification, IMA2015-096. It was found in the Bear Lake diggings, Bancroft area, Ontario, Canada, where coarse euhedral crystals of amphibole, phlogopite, sanidine solid-solution (now coarsely exsolved to microcline perthite), titanite, augite, zircon and fluorapatite crystallised from a low-viscosity silicocarbonatitic magma of crustal origin. Greenish grey prismatic crystals of ferri-fluoro-katophorite generally protrude from the walls into a body of coarsely crystalline calcite, but they also occur away from the walls, completely enclosed by calcite. The empirical formula derived from electron microprobe analysis and single-crystal structure refinement is: A (Na 0.55 K 0.32 ) Σ0.87 B (Na 0.79 Ca 1.18 Mn 2+ 0.03 ) Σ2.00 C (Mg 3.29 Mn 2+ 0.02 Fe 2+ 1.19 Fe 3+ 0.31 Al 0.09 Ti 4+ 0.08 Li 0.02 ) Σ5.00 T (Si 7.39 Al 0.61 ) Σ8.00 O 22 W [F 1.23 (OH) 0.77 ] Σ2.00 . Ferri-fluoro-katophorite is biaxial (–), with α = 1.640(2), β = 1.652(2), γ = 1.658(2), 2V meas. = 68.9(2)° and 2V calc. . = 70.1°. The unit-cell parameters are a = 9.887(3), b = 18.023(9), c = 5.292(2) Å, β = 104.66(3)°, V = 912.3(6) Å 3 , Z = 2 and space group C 2/ m . The strongest ten lines in the powder X-ray pattern [ d values (in Å) I ( hkl )] are: 2.708, 100, (151); 2.388, 74, (131); 3.139, 72, (310); 8.449, 69, (110); 2.540, 65, ( $\bar{2}$ 02); 2.591, 53, (061); 2.739, 47, ( $\bar{3}$ 31); 2.165, 45, (261); 3.279, 44, ( $\bar{2}$ 40); 2.341, 43, ( $\bar{3}$ 51).

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 imitation

Not 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.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.001
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Insufficient payload (model declined to judge)
Consensus categoriesMeta-epidemiology (narrow)
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.656
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.001
Meta-epidemiology (narrow)0.0020.002
Meta-epidemiology (broad)0.0030.001
Bibliometrics0.0000.001
Science and technology studies0.0010.001
Scholarly communication0.0010.001
Open science0.0020.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0030.001

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.

Opus teacher head0.014
GPT teacher head0.196
Teacher spread0.182 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it