Crystallization of Baddeleyite in Basaltic Rocks from Mars, and Comparisons with the Earth, Moon, and Vesta
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.
Bibliographic record
Abstract
Baddeleyite (ZrO2) is an accessory mineral that occurs in variable abundances in planetary basaltic rocks, depending on melt compositions and crystallization conditions. Location and characterization of baddeleyite in a range of planetary basaltic rocks by both automated and manual electron microbeam methods reveals random distributions of grains exhibiting planar and sometimes concentric cathodoluminescent banding. Results from basaltic martian meteorites (shergottites) are emphasized, as their conditions of crystallization are representative of the broad range observed for other planetary basaltic rocks including lunar meteorites and the asteroidal eucrites. We find that baddeleyite forms from late-stage igneous melt in all of these planetary samples, associated with ferroan pyroxene and olivine, Fe-Ti oxides, sulfides, and phosphates, and that it is most common at higher oxygen fugacity (≥⃒ QFM). We conclude that the primary factors affecting baddeleyite occurrence are Zr concentrations in late-stage melts, SiO2 activity, and oxygen fugacity-dependent compatibilities of Zr in Fe-Ti oxides.
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 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) | 0.000 | 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 it