NEW DATA ON TYPE-LOCALITY SOROSITE: COMPOSITIONAL VARIATIONS, ZONING, AND A REVISED FORMULA
Bibliographic record
Abstract
We report new results of multiple EMP analyses of sorosite from the Baimka Au–PGE placer deposit, western Chukotka, northeastern Russia. It occurs as (1) relatively large (0.2–0.4 mm) euhedral, cryptically zoned hexagonal grains, with Fe–Nirich zones in the core, (2) large irregular or skeletal grains, and (3) elongate subhedral to euhedral (hexagonal), or anhedral micrograins (≤20 m). They all are hosted by native tin (Sb-bearing), and are associated with stistaite Sn1+xSb and herzenbergite SnS. The Fe content of these zoned grains decreases from the center (3 wt.%) toward the edge (≤0.05 wt.%). The Ni content also decreases from the core (1.2 wt.%) to the periphery ( 415°–227°C, the latter being the eutectic temperature in the binary system Cu–Sn. A mineralized mafi c rock (gabbro, gabbro–diorite, or clinopyroxenite) associated with the Yegdegkychsky gabbro – diorite – syenite – monzonite complex in the placer area could be a potential primary source for the sorosite-bearing mineralization.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".