The Vanadium-bearing Oxide Minerals of the Green Giant Vanadium-graphite Deposit, Southwest Madagascar
Bibliographic record
Abstract
Research Article| May 30, 2018 The Vanadium-bearing Oxide Minerals of the Green Giant Vanadium-graphite Deposit, Southwest Madagascar Veronica E. Di Cecco; Veronica E. Di Cecco § Department of Natural History-Mineralogy, Royal Ontario Museum, 100 Queens Park, Toronto, Ontario, M5S 2C6, Canada §Corresponding author e-mail address: vdicecco@rom.on.ca Search for other works by this author on: GSW Google Scholar Kimberly T. Tait; Kimberly T. Tait Department of Natural History-Mineralogy, Royal Ontario Museum, 100 Queens Park, Toronto, Ontario, M5S 2C6, Canada Search for other works by this author on: GSW Google Scholar Edward T.C. Spooner; Edward T.C. Spooner Department of Earth Science, University of Toronto, 22 Russell Street, Ontario, M5S 3B1, Canada Search for other works by this author on: GSW Google Scholar Craig Scherba Craig Scherba NextSource Materials Inc., 145 Wellington Street, West #1001, Toronto, Ontario, M5H 3L5, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information Veronica E. Di Cecco § Department of Natural History-Mineralogy, Royal Ontario Museum, 100 Queens Park, Toronto, Ontario, M5S 2C6, Canada Kimberly T. Tait Department of Natural History-Mineralogy, Royal Ontario Museum, 100 Queens Park, Toronto, Ontario, M5S 2C6, Canada Edward T.C. Spooner Department of Earth Science, University of Toronto, 22 Russell Street, Ontario, M5S 3B1, Canada Craig Scherba NextSource Materials Inc., 145 Wellington Street, West #1001, Toronto, Ontario, M5H 3L5, Canada §Corresponding author e-mail address: vdicecco@rom.on.ca Publisher: Mineralogical Association of Canada First Online: 11 Jun 2018 Online Issn: 1499-1276 Print Issn: 0008-4476 © 2018 Mineralogical Association of Canada The Canadian Mineralogist (2018) 56 (3): 247–257. https://doi.org/10.3749/canmin.1700068 Article history First Online: 11 Jun 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Veronica E. Di Cecco, Kimberly T. Tait, Edward T.C. Spooner, Craig Scherba; The Vanadium-bearing Oxide Minerals of the Green Giant Vanadium-graphite Deposit, Southwest Madagascar. The Canadian Mineralogist 2018;; 56 (3): 247–257. doi: https://doi.org/10.3749/canmin.1700068 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyThe Canadian Mineralogist Search Advanced Search Abstract Rare vanadium-rich oxide minerals have been previously identified in graphite-bearing quartzo-feldspathic gneisses derived from shale protoliths. In this work, such minerals are described from the Green Giant vanadium-graphite property in southwest Madagascar. The vanadium-rich oxides include vanadium-bearing rutile (2.88 ± 1.75% V2O3, n = 18), schreyerite, oxyvanite, and karelianite. These minerals have been previously identified together in the Sludyanka, Lake Baikal area. Green Giant is the second occurrence worldwide of oxyvanite, and within the oxyvanite–berdesinskiite solid solution series Green Giant oxyvanites are the closest to endmember, with an average calculated mineral formula of (V3+1.49,Cr0.50,Fe3+0.01)∑2.00V4+1.00O5. Also found in this study is an unknown vanadium-titanium oxide mineral, UK1, which has a calculated formula of (V3+1.67Cr3+0.26 Al0.06)∑1.99(V4+2.05Ti4+1.94)∑3.99O11 and may be related to the V2Ti4O11 reported previously from the Lake Baikal area. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
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 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 | 0.003 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.006 | 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".