Pyrite: Fool's gold records starvation of bacteria
Bibliographic record
Abstract
Pyrite (FeS2) is the most common sulfur-bearing mineral in the Earth’s crust and can be found in all major types of rock: igneous, metamorphic, and sedimentary. It is the shiny, brass-colored mineral that you may know as fool’s gold because it looks like gold and has fooled people throughout recorded history (Fig. 1). In some areas, it can be observed at the sides of roads or trails, especially where the ground has been recently disturbed. If you have ever caught the scent of rotten eggs while digging at the beach, in mud flats, or swamps, you were probably in an area where pyrite was forming. That smell is caused by hydrogen sulfide (H2S), and the black or blue muds that you were digging in would have contained microscopic pyrite that formed when the hydrogen sulfide that you smelled bonded with iron in the pore waters (Rickard 2012).
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.
How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
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.
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 teacher head, 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".