... the stable tungsten isotopic composition (δ 186/184 W) of seawater recorded in three ferromanganese (Fe-Mn) crusts spanning the past 80 million years in the Pacific. The δ 186/184 W of Fe-Mn crusts displays a pronounced decrease of ∼0.2‰ from 60 Ma to 40 Ma followed by a stable value of ∼0‰ since ca. 40 Ma...

...Kirsten L. Rasmussen; Hendrik Falck; Vanessa Elongo; Jesse Reimink; Yan Luo; D. Graham Pearson; Luke Ootes; Robert A. Creaser; Pilar Lecumberri-Sanchez Abstract The crustally derived Tungsten Plutonic Suite (TPS) in the northern Canadian Cordillera is responsible for several of the world’s most...

...B. G. Kazamel; H. E. Jamieson; M. I. Leybourne; H. Falck; K. H. Johannesson Abstract Tungsten is a valuable industrial metal with limited effective substitutes for its many industrial uses. Tungsten is classified as a critical mineral by many countries, including Canada and the United States...

... tin (-tungsten) ore deposition . Economic Geology , 85 , 457 – 481 . Hennigh , Q. , and Hutchinson , R.W. ( 1999 ) Cassiterite at Kidd Creek: An example of volcanogenic massive sulfide-hosted tin mineralization . Economic Geology , 10 , 431 – 440 . Horn , I. , and von...

... on the distribution of Paleozoic magmatic tin-tungsten mineralization : Mineralium Deposita , v. 50 , p. 327 – 338 , https://doi.org/10.1007/s00126-014-0540-5 . Romer , R.L. , and Kroner , U. , 2016 , Phanerozoic tin and tungsten mineralization—Tectonic controls on the distribution of enriched...

...Panlao Zhao; Shunda Yuan; Anthony E. Williams-Jones; Rolf L. Romer; Chen Yan; Shiwei Song; Jingwen Mao Abstract Tungsten and Sn display similar behavior during magmatic processes and are commonly associated spatially and genetically with highly evolved granites. Nonetheless, they typically form...

... Asian Orogenic Belt (modified from Liu, Y. J. et al . 2017 ; Feng et al . 2019 ). (b) schematic tectonic map of NE China (modified from Wu et al . 2011 ). (c) distribution of major tungsten deposits in NE China (modified from Zeng et al . 2012 ). The black solid circles mark the sampling...

.../ ), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited. hydroplumboelsmoreite elsmoreite pyrochlore supergroup crystal structure tungsten ‘Jixianite’ used to be an approved mineral found in the Yanhe tungsten deposit in Jixian...

... riebeckite granite suite (541–485 Ma). Tungsten mineralization occurs within W-bearing quartz veins and a disseminated type confined to the monzogranite. Whole-rock geochemical data classify the granodiorite as a late-orogenic I-type with calc-alkaline affinity, while the monzogranite and alkali riebeckite...

... Varisque Tungsten and tin mineralization worldwide is spatially associated with granitoid intrusions forming a large variety of magmatic-hydrothermal ore deposits including greisens, veins, stockworks, skarns, pegmatites, porphyries, and breccia pipes ( Černý et al. , 2005 ; Romer and Kroner...

... HORN DEPOSIT Five patterns were observed in the EPMA determined compositions ( Table 4 and 5 ): (1) muscovite from DH11-104bi (resource area east of the main vein, 9.0–9.1 m depth) is more Mg-rich than Fe-bearing; (2) muscovite from DH11-137 (from the western, tungsten-rich end...

... precursors can be efficient vehicles for tungsten in sedimentary rocks, leading to their enrichment in W and possibly later fertility with respect to igneous ore deposits. Leucoxene, a nanocrystalline mixture of Ti and Fe oxides, is an especially suitable candidate for such a vehicle. * E...

...Stuart J. Mills; Pavel M. Kartashov; Anthony R. Kampf; Mike S. Rumsey; Chi Ma; Chris J. Stanley; John Spratt; George R. Rossman; Margarita I. Novgorodova Abstract Native tungsten (IMA2011-004), W, is officially described as a new mineral from gold placers in the Bol'shaya Pol'ya river valley...

... deposits of tin and tungsten. Inset shows the locations of the study area and the Leinster batholith in Ireland. B: Lithium pegmatites intrude the Tullow Lowlands pluton (TLp), minor granodioritic sheets, and Ordovician rocks of the Maulin Formation. C: Local geology of albite-spodumene pegmatite bodies...

...-dimensional kagomé networks in minerals where the kagomé node atoms are octahedrally coordinated in hexagonal tungsten bronze (HTB) arrays. Octahedral tilting, coupled with capping of the apical anions of the triangular groupings of octahedra in the HTB layers, gives rise to several important mineral groups...

... at the boundary between the W-rich and W-depleted domains. STEM energy-dispersive X-ray mapping reveals W- and Pb-enrichment along 2–3 nm-wide features defining the twin planes; W-bearing nanoparticles occur along the splays. Tungsten and Pb are both present, albeit at low concentrations, within Na–K–Cl-bearing...