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Record W2620350876 · doi:10.3749/canmin.1500088

Chemographic Exploration of the Milarite-Type Structure

2016· article· en· W2620350876 on OpenAlex

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.
venuePublished in a venue whose home country is Canada.

Bibliographic record

VenueThe Canadian Mineralogist · 2016
Typearticle
Languageen
FieldMaterials Science
TopicCrystal Structures and Properties
Canadian institutionsUniversity of Manitoba
Fundersnot available
KeywordsValence (chemistry)EndmemberCrystallographyCrystal structureChemistryFormal chargeLattice (music)MineralType (biology)Chemical physicsMineralogyPhysicsGeologyPaleontology

Abstract

fetched live from OpenAlex

Abstract The milarite structure-type has an uncommonly large number of distinct mineral species (23 at present). Here we explore this structure type from the point of view of possible root-charge arrangements and endmember compositions. Enumeration shows that there are 34 distinct root-charge arrangements with Si = 12 apfu and 39 distinct root-charge arrangements with Si = 8–11 apfu. A priori bond-valence calculations for all root-charge arrangements allows evaluation of lattice-induced strain as a function of chemical composition for all arrangements for which the detailed atomic arrangement has been refined. Analysis of localized strain indicates that the B site has the highest amount of strain in the structure, and in accord with this finding, milarite-group minerals with vacancies at the B site are more common than milarite-group minerals with fully occupied B sites. The a priori bond-valence calculations suggest that many other compositions are possible for the milarite structure-type. Examination of synthesis results reveals 20 synthetic compounds with the milarite-type structure that have distinct (dominant) endmember compositions. Examination of ∼350 chemical analyses from the literature reveals 29 distinct endmember compositions, six of which deserve to be described as new mineral species. Two additional analyses could lead to new minerals, but require confirmation of site populations by structure refinement.

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: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.638
Threshold uncertainty score0.892

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 science0.0000.000
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 head0.027
GPT teacher head0.215
Teacher spread0.188 · 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