OSWALDPEETERSITE, (UO2)2CO3(OH)2{middle dot}4H2O, A NEW BASIC URANYL CARBONATE MINERAL FROM THE JOMAC URANIUM MINE, SAN JUAN COUNTY, UTAH, U.S.A.
Bibliographic record
Abstract
Oswaldpeetersite, ideally (UO 2 ) 2 CO 3 (OH) 2 ·4H 2 O, is a newly discovered hydrated basic uranyl carbonate mineral found in the Jomac uranium mine, Brown’s Rim, San Juan County, Utah, U.S.A. It occurs along some bedding planes of a layer of siltstone within the Triassic Shinarump conglomerate. Associated minerals are gypsum, cuprite, antlerite, goethite, lepidocrocite, mbobomkulite, hydrombobomkulite, sklodowskite and two undefined uranium minerals. Oswaldpeetersite occurs as micrometric prismatic crystals (approximately 0.1 × 1 × 02 mm). These are canary yellow and transparent, with a vitreous luster and pale yellow streak. It does not fluoresce in ultraviolet radiation. The H Mohs is in the range 2–3. D meas > 4.10 g/cm 3 , D calc = 4.54 g/cm 3 (empirical formula), 4.50 g/cm 3 (idealized formula). Optically biaxial negative, α 1.583(2), β 1.669(2), γ 1.712(2), and 2 V calc = 67.4(2)°. Orientation Z || a and elongation positive. The pleochroism is X and Y very pale yellow to colorless, and Z pale yellow. The cleavage and parting are along the elongation. The tenacity is weak, and the fracture, uneven. The habit can be described as acicular. Oswaldpeetersite is monoclinic, P 2 1 / c , with unit-cell parameters refined from powder data: a 4.1425(6), b 14.098(3), c 18.374(5) A, β 103.62(1)°, V 1042.8(3) A 3 , a:b:c = 0.2938:1:1.3033 and Z = 4. The forms recognized are {100}, {010} and {001}. The strongest eight reflections of the X-ray powder pattern [ d (in A)( I )( hkl )] are: 8.95(65)(002), 7.54(63)(012), 4.55(96)(031), 4.26(60)(014), 3.46(62)(015), 3.32(100)(114), 3.029(85)(043) and 2.273(62)(062). Electron-microprobe and thermogravimetric analyses gave UO 3 81.47 and H 2 O 12.30 wt.%. The CO 2 content was calculated as 6.23 wt.% by difference. The oxide formula is 2.03 UO 3 ·1.01 CO 2 ·4.88 H 2 O, and the empirical formula is (UO 2 ) 2.03 (CO 3 ) 1.01 (OH) 2.05 ·3.85 H 2 O. The name honors the Belgian structural crystallographer Maurice Oswald Peeters, University of Leuven, Belgium.
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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 | 0.001 | 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 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".