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Record W2136131130 · doi:10.2113/gscanmin.45.4.935

THE CRYSTAL STRUCTURE OF KAMPFITE

2007· article· en· W2136131130 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 · 2007
Typearticle
Languageen
FieldMaterials Science
TopicCrystal Structures and Properties
Canadian institutionsUniversity of British Columbia
Fundersnot available
KeywordsPolyhedronCrystallographyTetrahedronDiffractometerCrystal structurePlanarity testingDodecahedronChemistryMaterials scienceCombinatoricsMathematics

Abstract

fetched live from OpenAlex

The crystal structure of kampfite, ideally Ba 12 (Si 11 Al 5 )O 31 (CO 3 ) 8 Cl 5 , a 31.2329(7), b 5.2398(1), c 9.0966(3) A, β 106.933(2)°, V 1424.2(1) A 3 , Cc , Z = 1, has been solved by direct methods and refined to an R index of 2.3% for 2938 observed (| F o | > 4σ F ) reflections collected with a four-circle diffractometer using Mo K α radiation and a CCD detector. The kampfite structure is based on double layers of tetrahedra, [ T 4 O 8 ] , consisting of six-membered rings oriented parallel to (100). The layers of tetrahedra are connected by slabs of Ba polyhedra composed of a layer of BaO 6 Cl 6 polyhedra, with all of the Ba and Cl atoms sharing a common plane parallel to (100), flanked on either side by a layer of BaO 9 Cl polyhedra. The CO 3 groups lie between the layers of Ba polyhedra and are oriented approximately parallel to (100). The layering of T O 4 tetrahedra and Ba polyhedra is responsible for the perfect {100} cleavage of kampfite. Kampfite is part of the monteregianite-(Y) – wickenburgite series and is structurally and chemically similar to cymrite.

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 score0.833
Threshold uncertainty score0.666

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 studies0.0010.001
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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 head0.012
GPT teacher head0.222
Teacher spread0.210 · 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