 | | Journal (article/letter/editorial) | | Sedimentology of Triassic Dounan-type manganese deposits, western margin, Yangtze Platform, China Hongjun Liu ) ...Metallurgical Industry, Erxianqiao, Chengdu, 610051, China Received 15 October 1997; accepted 22 March 1999...Triassic; Tethyan tectonics 1. Introduction The Dounan-type deposit is the general name for manganese...Province and to the south by Jianshui–Wenshan in southeastern Yunnan Province ŽFig. 1.. Seven medium-size...deposits have been studied so far, including the Dounan, Baixian, and Heishui deposits ŽFig. 2.. There |  | | Journal (article/letter/editorial) | | to and classification of manganese deposits of China Delian Fan ) , Peiji Yang Institute of Geology,...Academy of Sciences, P.O. Box 9825, Beijing 100029, China Received 15 October 1997; accepted 28 February 1999...Manganese ŽMn. ore deposits are widely distributed in China and can be divided into six types based on origin...Quaternary ages. The largest Mn metallogenic periods in China are Sinian and Devonian, in contrast to the widespread...world. Mn-bearing stratigraphic successions in China can be divided into six types of lithologic associations: |  | | Journal (article/letter/editorial) | | - Printed in The Netherlands 315 Diagenetic Braunite in Sedimentary Rocks of the Proterozoic Manganese...Ostwald, J. and Bolton, B.R., 1990. Diagenetic braunite in sedimentary rocks of the Proterozoic Manganese...Manganese, Vol. II. Ore Geol. Rev., 5: 315-323. Braunite occurs in shales in the Proterozoic Manganese...mineral is here classified as diagenetic in origin. Braunite may have grown as concretions in the still-moist...organically-derivedphosphate. Polycrystalline braunite also occurs in the Manganese Group sediments, |  | Xiang, Jie, Chen, Jianping, Bagas, Leon, Li, Shi, Wei, Hantao, Chen, Binghan (2020) Southern China's manganese resource assessment: An overview of resource status, mineral system, and prediction model. Ore Geology Reviews, 116. 103261 doi:10.1016/j.oregeorev.2019.103261 | Journal (article/letter/editorial) | | Sciences, Beijing 100037, China. 2. School of Earth Sciences and Resources, China University of Geosciences...Geosciences, Beijing 100083, China 3. Centre for Exploration Targeting, University of Western Australia, 35 Stirling...refinement of iron ore and as an alloy in steel. China has rich resources of manganese (Mn), with the majority...majority of deposits located in southern China. The common types of Mn deposits are sedimentary, hydrothermally...the status of Mn resources in regions of southern China considered to be prospective for the metal; (2) |  | | Journal (article/letter/editorial) | | mainly of braunite group minerals, including braunite, partridgeite and bixbyite, with rare braunite II and...and Ca-poor, silica-depleted braunite. Iron-poor partridgeite is distinguished from Fe-rich bixbyite and...Ca-poor, silica-depleted braunite is reported for the first time, Braunite and partridgeite formed during...previous authors. The phase chemistry of braunite, braunite II and bixbyite is explained by the existing...existing polysomatic stacking model for the braunite group. However, the chemical composition of partridgeite |  | | Journal (article/letter/editorial) | | . . Primary braunite in Triassic sedimentary manganese deposits of Dounan, Yurman, China B. Hou . . |  | | Journal (article/letter/editorial) | | te, (2) hausmannite+calcite+tephroite and (3) braunite+ celsian+phlogopite. The Mn ores are compositionally...zone of hydrothermal solutions and seawater. The braunite ore is chemically distinct from the hausmannite...shore of Lake Halvtron, near Grythyttan, OÈrebro county (lat. 59°40.2¢N, long. 14°36.8¢E). Geological...limited prospecting work has been carried out at the mine. The total production of Fe and Mn ore is estimated...ores at SjoÈgruvan consist of hausmannite and braunite layers associated with carbonates and silicate |  | | Journal (article/letter/editorial) | | between 1800 and 900 Ma, Wafangzi in northeastern China, which formed at about 1100 Ma. This mid-Proterozoic...minerals; most deposits have either rhodochrosite or braunite as the dominant Mn phase (Table 2). Of the rh...percent are sedimentary rock-hosted, whereas for the braunite-dominated deposits, 75 percent are hosted by volcanic...rhodochrosite as the carbonate, which is accompanied by braunite. Supergene parts of all three Mn deposit types...dominant. 537 538 J. BARRY MAYNARD Rhodochrosite Braunite Cryptomelane Manganite Pyrolusite Hausmannite |  | | Report (volume) | | so far reported. Zoisite in eclogite from Su-Lu, China has up to 3.2 wt% SrO (Nagasaki and Enami 1998)...Cordier L (1803) Analyse du Minéralconnu sus le nom de Mine de Manganese violet du Piédmont, faite au Labratoire...(1956) Manganiferous epidote from the Kakinomoto Mine, Kochi Prefecture. J Min Soc Japan 2: 331-346 (quoted...metamorphic rocks from the Su-Lu province, eastern China: an important Sr reservoir under UHP conditions...chemical study of piedmontite from Shadow Lake, madera County, California. Am Mineral 18:493-500 Smelik EA, Franz |
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