Matches in SemOpenAlex for { <https://semopenalex.org/work/W2800505570> ?p ?o ?g. }
- W2800505570 endingPage "188" @default.
- W2800505570 startingPage "188" @default.
- W2800505570 abstract "The Mayo Salah pluton, which is located in the North-Cameroon domain of Central African Bold Belt (CAFB), is emplaced as a laccolith in volcano-sedimentary schists of Poli series, and displays features of Rare-metal Granite (RMG). It is made of two main rock groups: (1) the metaluminous barren muscovite granite (MsG) and (2) the Nb-Ta bearing peraluminous leucogranite (MsL) which expresses four subtypes. The evolved Rare-element MsL is subalkaline, slightly peraluminous (ASI = 1.01–1.21), and it displays flat REE chondrite-normalized patterns with a strong negative Eu anomaly (Eu/Eu* = 0.02–0.20). It belongs to the peraluminous low phosphorus Rare-element Granites and L-type igneous rocks, as shown by the relatively low Zr/Hf (4.8–14) and Nb/Ta (1.4–9.0) ratios and the positive slope of the Zr-Hf-Nb-Ta profile in spider diagrams. The rare-element-bearing mineral is represented by columbite-group minerals (CGM) and other Nb-Ta-oxides (Nb-rutile and pyrochlore supergroup minerals). The CGM is classified as Mn-columbite, with Ta# and Mn# ratios increasing from core to rim. Two stages of mineralization are identified; the earliest stage (CGM-I) consists in scattered tabular or prismatic euhedral grains that were related to magmatic fractionation. The latest stage (CGM-II) is expressed as a Ta-rich Mn hydrothermal CGM episode represented as rims and/overgrowths around and/or as veinlet crosscutting CGM-I or in cleavage planes of muscovite. The U-Pb dating of columbite and monazite of the Mayo Salah leucogranite indicates a late-Neoproterozoic magmatic-hydrothermal mineralization event from 603.2 ± 5.3 to 581.6 ± 7.2 Ma, as consistent with both late D2 to D3 events that were recorded in the CAFB in Cameroon, and the associated continental collision environment. The Nb-Ta mineralization of the Mayo Salah pluton provides evidence for the presence of RMG in Northern Cameroon of CAFB, and its temporal association with the youngest period of metallogenic epoch of Nb-Ta-ore formation in Africa associated to Pan-African times." @default.
- W2800505570 created "2018-05-17" @default.
- W2800505570 creator A5022662168 @default.
- W2800505570 creator A5024686425 @default.
- W2800505570 creator A5026415363 @default.
- W2800505570 creator A5026742616 @default.
- W2800505570 creator A5032971931 @default.
- W2800505570 creator A5040445181 @default.
- W2800505570 creator A5059628567 @default.
- W2800505570 creator A5069097467 @default.
- W2800505570 creator A5087866115 @default.
- W2800505570 date "2018-04-30" @default.
- W2800505570 modified "2023-10-16" @default.
- W2800505570 title "Evidence for Nb-Ta Occurrences in the Syn-Tectonic Pan-African Mayo Salah Leucogranite (Northern Cameroon): Constraints from Nb-Ta Oxide Mineralogy, Geochemistry and U-Pb LA-ICP-MS Geochronology on Columbite and Monazite" @default.
- W2800505570 cites W1224038671 @default.
- W2800505570 cites W1518565720 @default.
- W2800505570 cites W1560443503 @default.
- W2800505570 cites W1906764685 @default.
- W2800505570 cites W1965874032 @default.
- W2800505570 cites W1967010660 @default.
- W2800505570 cites W1969414340 @default.
- W2800505570 cites W1970673598 @default.
- W2800505570 cites W1970727885 @default.
- W2800505570 cites W1973342441 @default.
- W2800505570 cites W1973365823 @default.
- W2800505570 cites W1974499954 @default.
- W2800505570 cites W1974600374 @default.
- W2800505570 cites W1975131476 @default.
- W2800505570 cites W1978148474 @default.
- W2800505570 cites W1983807101 @default.
- W2800505570 cites W1985595379 @default.
- W2800505570 cites W1986202484 @default.
- W2800505570 cites W1994185250 @default.
- W2800505570 cites W1994721714 @default.
- W2800505570 cites W1995446222 @default.
- W2800505570 cites W1995895009 @default.
- W2800505570 cites W1996988302 @default.
- W2800505570 cites W1999862911 @default.
- W2800505570 cites W2004304960 @default.
- W2800505570 cites W2012348947 @default.
- W2800505570 cites W2014574445 @default.
- W2800505570 cites W2018691581 @default.
- W2800505570 cites W2019034794 @default.
- W2800505570 cites W2020973699 @default.
- W2800505570 cites W2020974273 @default.
- W2800505570 cites W2021987309 @default.
- W2800505570 cites W2022682910 @default.
- W2800505570 cites W2026324572 @default.
- W2800505570 cites W2026475967 @default.
- W2800505570 cites W2026735058 @default.
- W2800505570 cites W2029923666 @default.
- W2800505570 cites W2031843587 @default.
- W2800505570 cites W2031973301 @default.
- W2800505570 cites W2032763719 @default.
- W2800505570 cites W2039872199 @default.
- W2800505570 cites W2040377046 @default.
- W2800505570 cites W2044936097 @default.
- W2800505570 cites W2048267754 @default.
- W2800505570 cites W2050788474 @default.
- W2800505570 cites W2052377311 @default.
- W2800505570 cites W2052899335 @default.
- W2800505570 cites W2055312658 @default.
- W2800505570 cites W2055985251 @default.
- W2800505570 cites W2057935873 @default.
- W2800505570 cites W2060855340 @default.
- W2800505570 cites W2077501769 @default.
- W2800505570 cites W2078105240 @default.
- W2800505570 cites W2082724254 @default.
- W2800505570 cites W2084448379 @default.
- W2800505570 cites W2085787749 @default.
- W2800505570 cites W2087177400 @default.
- W2800505570 cites W2087290717 @default.
- W2800505570 cites W2087662765 @default.
- W2800505570 cites W2092328416 @default.
- W2800505570 cites W2092479372 @default.
- W2800505570 cites W2092720542 @default.
- W2800505570 cites W2094169297 @default.
- W2800505570 cites W2096328759 @default.
- W2800505570 cites W2098235917 @default.
- W2800505570 cites W2103134769 @default.
- W2800505570 cites W2103578787 @default.
- W2800505570 cites W2120265101 @default.
- W2800505570 cites W2125419759 @default.
- W2800505570 cites W2127823939 @default.
- W2800505570 cites W2130754595 @default.
- W2800505570 cites W2132843088 @default.
- W2800505570 cites W2133107978 @default.
- W2800505570 cites W2144240910 @default.
- W2800505570 cites W2147396012 @default.
- W2800505570 cites W2152701477 @default.
- W2800505570 cites W2154241237 @default.
- W2800505570 cites W2159485678 @default.
- W2800505570 cites W2161939913 @default.
- W2800505570 cites W2166240011 @default.
- W2800505570 cites W2167659745 @default.
- W2800505570 cites W2206094921 @default.
- W2800505570 cites W2262537693 @default.
- W2800505570 cites W2294964416 @default.