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Record W2768797812 · doi:10.1180/minmag.2017.081.076

Chemographic exploration of the hyalotekite structure-type

2017· article· en· W2768797812 on OpenAlex
F. C. Hawthorne, Elena Sokolova, Atali A. Agakhanov, Leonid A. Pautov, Vladimir Yu. Karpenko, Edward S. Grew

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.

Bibliographic record

VenueMineralogical Magazine · 2017
Typearticle
Languageen
FieldMaterials Science
TopicCrystal Structures and Properties
Canadian institutionsUniversity of Manitoba
Fundersnot available
KeywordsTriclinic crystal systemCrystallographyCrystal structureTetragonal crystal systemChemistryGroup (periodic table)Type (biology)Crystal chemistryGeology

Abstract

fetched live from OpenAlex

ABSTRACT The hyalotekite group has been approved by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (memorandum 57–SM/16). The general formula of the minerals of the hyalotekite group may be written as: A 2 B 2 M 2 [Si 8 T 4 O 28 ]W where A = Ba 2+ , Pb 2+ or K + ; B = Ba 2+ , Pb 2+ or K + ; M = Ca 2+ , Y 3+ or REE 3+ ; T = Si 4+ , B 3+ or Be 2+ ; and W = F – or □ (where REE = rare-earth elements and □ = vacancy). Four minerals are currently known in this group: hyalotekite, Ba 4 Ca 2 [Si 8 B 2 (SiB)O 28 ]F, triclinic, I $\bar 1$ ; khvorovite, Pb 2+ 4 Ca 2 [Si 8 B 2 (SiB)O 28 ]F, triclinic I $\bar 1$ ; kapitsaite-(Y), Ba 4 (YCa)[Si 8 B 2 B 2 O 28 ]F, triclinic, I $\bar 1$ ; and itsiite Ba 4 Ca 2 [Si 8 B 4 O 28 ]□, tetragonal, I $\bar 4$ 2 m. We explore the possible end-member compositions within this group by conflating the properties of an end-member with the stoichiometry imposed by the bond topology of the hyalotekite structure-type and the crystal-chemical properties of its known constituents. There are two high-coordination sites in the hyalotekite structure, A and B , and occupancy of each of these sites can be determined only by crystal-structure refinement. If these two sites are considered together, there are 19 end-member compositions of the triclinic structure and six end-member compositions of the tetragonal structure involving A and B = Ba 2+ , Pb 2+ , K + ; M = Ca 2+ , Y 3+ , REE 3+ ; and T = Si 4+ , B 3+ , Be 2+ . There is the possibility for many other hyalotekite-group minerals, and two potential new minerals have been identified from data in the literature.

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)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.776
Threshold uncertainty score0.966

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

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.

Opus teacher head0.040
GPT teacher head0.259
Teacher spread0.219 · 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