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Record W4415226704 · doi:10.2138/gselements.21.5.360

Mineralogical Association of Canada

2025· article· en· W4415226704 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.

aboutThe title or abstract carries a Canadian signal from the geographic lexicon.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueElements · 2025
Typearticle
Languageen
FieldEarth and Planetary Sciences
TopicMineralogy and Gemology Studies
Canadian institutionsnot available
Fundersnot available
KeywordsPhenocrystMineralVolcanoProvenanceMineral resource classificationVolcanic rockNatural (archaeology)

Abstract

fetched live from OpenAlex

The May issue of CJMP flirts with controversy, and is not for the faint-hearted; make sure you're comfortably seated and adequately fortified first.To begin with, the assumption that euhedral-looking phenocrysts in a volcanic groundmass actually represent simple magmatic growth events, arguably the fundamental basis for the development of crystalliquid partition coefficient data (at least from natural systems), is questioned by Georg Zellmer and Toshiyuki Iizuka.They identify evidence of crystal fracturing, resorption, annealing, and overgrowths in phenocrysts in a variety of tectonomagmatic settings requiring microimaging to resolve.To properly put your digestion at risk, this paper is followed by a proposal by Louis Cabri and Andy MacDonald that the existing IMA classification of the platinum group mineral mertiete, a Pd-Cu-Sb-As compound, should be re-assessed and clarified, and that the discrepancy between IMA-approved names and compositions and structures and those in usage subsequently have become problematic.More comfortingly, Bob Martin and Dirk Schumann investigate the relationship between marble coloring, anatectic carbonate melts, fluorapatites, and fenites from the Central Metasedimentary Belt of the Grenville Province in Ontario; and Lee Groat and colleagues from the west coast of North America (British Columbia and California), plus the Czech Republic, assess the provenance of an emerald cabochon gem found in Sicily, a probable remnant from a ruin, from which its origins and relevant trace routes are surmised based on geochemistry and inclusions.If you only think of the Roman Empire once this year, make this article that moment.One new mineral is also identified in this issue, a uranyl selenite from Colorado, amurselite, by researchers from California and Pennsylvania.The combination of ammonium and uranium oxide is particularly intriguing.The name is a portmanteau of the first two letters of the dominant ions, ammonium, uranyl, and selenite.Our recently most-read publications, according to GeoScienceWorld, show interest in tourmaline waning somewhat, replaced by our featured article on crystal fragmentation, comfortably in first place: Crystal Fragmentation Inducing Euhedral Crystal Habits inVolcanic Rocks: Fracture Histories of Crystals from Various Tectonomagmatic Settings and Implications for Plumbing System Processes, by Georg Zellmer and Yoshiyuki Iizuka, up from third place where it was available online since May 2025.A surprising dark horse in second place is Virgilluethite: A New Mineral and the Natural Analogue of Synthetic -MoO 3 H 2 O, from Cookes Peak, Luna County, New Mexico, USA, from Hexiong Yang, Xiangping Gu, Ronald Gibbs, and Robert Downs, from CJMP volume 61(3), from 2023, representing a resurgent interest in molybdenum.These are followed by our long-standing chart-toppers, Recognizing Tourmaline in Mineralized Porphyry Cu Systems: Textures and Major-Element Chemistry, and now in a distance second place, Trace Element Characteristics of Tourmaline in Porphyry Cu Systems: Development and Application To Discrimination, both by Christopher Beckett-Brown, Andrew McDonald, and Beth McClenaghan.These both appear in volume 61(1) from 2023 CJMP.

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 categoriesInsufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.720
Threshold uncertainty score1.000

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 head0.005
GPT teacher head0.200
Teacher spread0.195 · 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