Geology of the Two Duck Lake Intrusion and the Marathon Cu-PGE Deposit, Coldwell Complex, Northern Ontario
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Bibliographic record
Abstract
Research Article| January 01, 2001 Geology of the Two Duck Lake Intrusion and the Marathon Cu-PGE Deposit, Coldwell Complex, Northern Ontario RICHARD DAHL; RICHARD DAHL Department of Earth Sciences, Carleton University Ottawa, Ontario, K1S 5B6 *Consulting geologist, Aylmer, Québec; e-mail: dahlr@sprint.ca. Search for other works by this author on: GSW Google Scholar DAVID H. WATKINSON; DAVID H. WATKINSON Department of Earth Sciences, Carleton University Ottawa, Ontario, K1S 5B6 Search for other works by this author on: GSW Google Scholar RICHARD P. TAYLOR RICHARD P. TAYLOR Department of Earth Sciences, Carleton University Ottawa, Ontario, K1S 5B6 Search for other works by this author on: GSW Google Scholar Exploration and Mining Geology (2001) 10 (1-2): 51–65. https://doi.org/10.2113/10.1-2.51 Article history received: 10 Oct 2001 accepted: 25 Mar 2002 first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation RICHARD DAHL, DAVID H. WATKINSON, RICHARD P. TAYLOR; Geology of the Two Duck Lake Intrusion and the Marathon Cu-PGE Deposit, Coldwell Complex, Northern Ontario. Exploration and Mining Geology 2001;; 10 (1-2): 51–65. doi: https://doi.org/10.2113/10.1-2.51 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 SocietyExploration and Mining Geology Search Advanced Search Abstract Detailed mapping of the Eastern Gabbro, Coldwell Complex, Ontario, revealed that the copper and platinum-group-element deposit on the Marathon property is confined to a coarse-grained to pegmatitic gabbro-diorite intrusion, the Two Duck Lake intrusion (TDLI). Exposed along the eastern boundary of the Coldwell Complex, the TDLI was emplaced as a sill whose orientation is slightly oblique to the general structure of the Eastern Gabbro. The TDLI has been subdivided into lower, middle and upper sub-units on the bases of lithological, textural, mineralogical, and geochemical criteria. Both border sub-units are sulfide-, base- and precious metal-enriched, and exhibit abundant evidence of host-rock assimilation. The primary mineral assemblage in the TDLI is plagioclase, olivine, clinopyroxene, Fe-Ti oxides, with accessory orthopyroxene, biotite, apatite; this primary mineral assemblage is essentially preserved in the core of the intrusion (i.e., the middle subunit). The Cu-PGE Marathon deposit, delineated mainly in the upper sub-unit of the intrusion, consists of disseminated Fe-Cu-Ni sulfides, and platinum-group-minerals derived by hydrothermal remobilization from primary magmatic sulfides. Enrichment in Cu and PGE resulted from partial replacement of original Fe-Ti oxides and pyrrhotite in the primary mineral assemblage by reaction with (a) residual magmatic fluid, and (b) fluids derived from the breakdown of host rock xenoliths and hydrothermal alteration along the lower contact of the TDLI. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
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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