A. Cabral, F. Rios, L. E. D. Amorim, F. Laufek, L. Graça
{"title":"Hydrothermal cerium oxide in manganese-oxide-cemented breccia, Quadrilátero Ferrífero of Minas Gerais, Brazil","authors":"A. Cabral, F. Rios, L. E. D. Amorim, F. Laufek, L. Graça","doi":"10.1127/njma/2020/0184","DOIUrl":"https://doi.org/10.1127/njma/2020/0184","url":null,"abstract":"","PeriodicalId":51139,"journal":{"name":"Neues Jahrbuch Fur Mineralogie-Abhandlungen","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73426716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Silver minerals in the Unkur sandstone-hosted Cu deposit (Transbaikalia region, Russia)","authors":"K. Novoselov, E. Belogub, E. Palenova, I. Blinov","doi":"10.1127/njma/2020/0192","DOIUrl":"https://doi.org/10.1127/njma/2020/0192","url":null,"abstract":"","PeriodicalId":51139,"journal":{"name":"Neues Jahrbuch Fur Mineralogie-Abhandlungen","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81532303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Serpentinization and chloritization of metamorphosed lherzolites in Darreh-Deh (east of Nain Ophiolite, Central Iran): Calcium source for rodingitization and tremolitization","authors":"N. Shirdashtzadeh, G. Torabi","doi":"10.1127/njma/2019/0163","DOIUrl":"https://doi.org/10.1127/njma/2019/0163","url":null,"abstract":"","PeriodicalId":51139,"journal":{"name":"Neues Jahrbuch Fur Mineralogie-Abhandlungen","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81893209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Schlüter, T. Malcherek, B. Mihailova, Christian Rewitzer, R. Hochleitner, D. Müller, A. Günther
{"title":"Fehrite, MgCu4(SO4)2(OH)6 · 6H2O, the magnesium analogue of ktenasite from the Casualidad mine near Baños de Alhamilla, Almeria, Spain","authors":"J. Schlüter, T. Malcherek, B. Mihailova, Christian Rewitzer, R. Hochleitner, D. Müller, A. Günther","doi":"10.1127/njma/2020/0218","DOIUrl":"https://doi.org/10.1127/njma/2020/0218","url":null,"abstract":"","PeriodicalId":51139,"journal":{"name":"Neues Jahrbuch Fur Mineralogie-Abhandlungen","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75454716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Composition of minerals from the skarn deposits Väster Silvberg (Sweden) and Tumurtijn-ovoo (Mongolia): Indications of different element supply in submarine hydrothermal-sedimentary ore genesis","authors":"W. Gottesmann, B. Gottesmann","doi":"10.1127/njma/2019/0123","DOIUrl":"https://doi.org/10.1127/njma/2019/0123","url":null,"abstract":"","PeriodicalId":51139,"journal":{"name":"Neues Jahrbuch Fur Mineralogie-Abhandlungen","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81918992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Giri, Praveer Pankaj, N. V. C. Rao, R. Chakrabarti, D. Pandit
We report petrology and geochemistry (including Sr and Nd isotopes) of a fresh lamprophyre at Ankiraopalli area at the north-western margin of Paleo-Mesoproterozoic Cuddapah basin, eastern Dharwar craton, southern India. Ankiraopalli samples possess a typical lamprophyre porphyritic-panidiomorphic texture with phenocrysts of kaersutite and diopside set in a plagioclase dominant groundmass. Combined mineralogy and geochemistry classify it as alkaline lamprophyre in general and camptonite in particular. Contrary to the calc-alkaline and/or shoshonitic orogenic nature portrayed by lamprophyres occurring towards the western margin of the Cuddapah basin, the Ankiraopalli samples display trace element composition revealing striking similarity with those of ocean island basalts, Italian alkaline lamprophyres and highlights an anorogenic character. However, the Sr-87/Sr-86(initial) (0.710316 to 0.720016) and epsilon Nd-initial (-9.54 to -9.61) of the Ankiraopalli lamprophyre show derivation from an `enriched' mantle source showing long term enrichment of incompatible trace elements and contrast from those of (i) OIB, and (ii) nearby Mahbuhnagar alkaline mafic dykes of OIB affinity. Combining results of this study and recent advances made, multiple mantle domains are identified in the Eastern Dharwar craton which generated distinct Mesoproterozoic lamprophyre varieties. These include (i) Domain I, involving sub-continental lithospheric mantle source essentially metasomatized by subduction-derived melts/fluids (represented by orogenic calcalkaline and/or shoshonitic lamprophyres at the Mudigubba, the Udiripikonda and the Kadiri); (ii) Domain II, comprising a mixed sub-continental lithospheric and asthenospheric source (represented by orogenic-anorogenic, alkaline to calc-alkaline transitional lamprophyres at the Korakkodu), and (iii) Domain III, representing a sub-continental lithospheric source with a dominant overprint of an asthenospheric (plume) component (represented by essentially alkaline lamprophyres at the Ankiraopalli). Our study highlights the varied mantle source heterogeneities and complexity of geodynamic processes involved in the Neoarchean-Paleo/Mesoproterozoic evolution of the Eastern Dharwar craton.
{"title":"Petrogenesis of an alkaline lamprophyre (camptonite) with ocean island basalt (OIB)-affinity at the NW margin of the Cuddapah basin, eastern Dharwar craton, southern India","authors":"R. Giri, Praveer Pankaj, N. V. C. Rao, R. Chakrabarti, D. Pandit","doi":"10.1127/njma/2019/0179","DOIUrl":"https://doi.org/10.1127/njma/2019/0179","url":null,"abstract":"We report petrology and geochemistry (including Sr and Nd isotopes) of a fresh lamprophyre at Ankiraopalli area at the north-western margin of Paleo-Mesoproterozoic Cuddapah basin, eastern Dharwar craton, southern India. Ankiraopalli samples possess a typical lamprophyre porphyritic-panidiomorphic texture with phenocrysts of kaersutite and diopside set in a plagioclase dominant groundmass. Combined mineralogy and geochemistry classify it as alkaline lamprophyre in general and camptonite in particular. Contrary to the calc-alkaline and/or shoshonitic orogenic nature portrayed by lamprophyres occurring towards the western margin of the Cuddapah basin, the Ankiraopalli samples display trace element composition revealing striking similarity with those of ocean island basalts, Italian alkaline lamprophyres and highlights an anorogenic character. However, the Sr-87/Sr-86(initial) (0.710316 to 0.720016) and epsilon Nd-initial (-9.54 to -9.61) of the Ankiraopalli lamprophyre show derivation from an `enriched' mantle source showing long term enrichment of incompatible trace elements and contrast from those of (i) OIB, and (ii) nearby Mahbuhnagar alkaline mafic dykes of OIB affinity. Combining results of this study and recent advances made, multiple mantle domains are identified in the Eastern Dharwar craton which generated distinct Mesoproterozoic lamprophyre varieties. These include (i) Domain I, involving sub-continental lithospheric mantle source essentially metasomatized by subduction-derived melts/fluids (represented by orogenic calcalkaline and/or shoshonitic lamprophyres at the Mudigubba, the Udiripikonda and the Kadiri); (ii) Domain II, comprising a mixed sub-continental lithospheric and asthenospheric source (represented by orogenic-anorogenic, alkaline to calc-alkaline transitional lamprophyres at the Korakkodu), and (iii) Domain III, representing a sub-continental lithospheric source with a dominant overprint of an asthenospheric (plume) component (represented by essentially alkaline lamprophyres at the Ankiraopalli). Our study highlights the varied mantle source heterogeneities and complexity of geodynamic processes involved in the Neoarchean-Paleo/Mesoproterozoic evolution of the Eastern Dharwar craton.","PeriodicalId":51139,"journal":{"name":"Neues Jahrbuch Fur Mineralogie-Abhandlungen","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2019-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85308476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xiu Liu, Xinqi Yu, Pengju Li, Jun Hu, Mengyan Liu, Yan Zeng
{"title":"Late-Mesozoic tectonic evolution and magmatic history of the Zhe-Gan-Wan region, SE China: evidence from the Shiling rhyolite and other Yanshanian granitoids","authors":"Xiu Liu, Xinqi Yu, Pengju Li, Jun Hu, Mengyan Liu, Yan Zeng","doi":"10.1127/njma/2019/0142","DOIUrl":"https://doi.org/10.1127/njma/2019/0142","url":null,"abstract":"","PeriodicalId":51139,"journal":{"name":"Neues Jahrbuch Fur Mineralogie-Abhandlungen","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75436943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The carbonate and silicate mineralogy of the Zhilingtou gold-silver deposit, Zhejiang Province, south-eastern China","authors":"S. Karup-moller, E. Makovicky, L. Jiuling","doi":"10.1127/NJMA/2019/0143","DOIUrl":"https://doi.org/10.1127/NJMA/2019/0143","url":null,"abstract":"","PeriodicalId":51139,"journal":{"name":"Neues Jahrbuch Fur Mineralogie-Abhandlungen","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74919495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pedro Alves, W. Mumme, I. Grey, C. MacRae, R. Gable
{"title":"Green mawbyite, PbFe3+Fe2+0.4Zn0.6(AsO4)2OH(H2O), from the Lagoa mine, northern Portugal","authors":"Pedro Alves, W. Mumme, I. Grey, C. MacRae, R. Gable","doi":"10.1127/NJMA/2019/0167","DOIUrl":"https://doi.org/10.1127/NJMA/2019/0167","url":null,"abstract":"","PeriodicalId":51139,"journal":{"name":"Neues Jahrbuch Fur Mineralogie-Abhandlungen","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81735099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Chargar Au-Cu deposit: an example of low-sulfidation epithermal mineralization from the Tarom subzone, NW Iran","authors":"S. H. M. Motlagh, M. Ghaderi","doi":"10.1127/NJMA/2019/0158","DOIUrl":"https://doi.org/10.1127/NJMA/2019/0158","url":null,"abstract":"","PeriodicalId":51139,"journal":{"name":"Neues Jahrbuch Fur Mineralogie-Abhandlungen","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2019-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1127/NJMA/2019/0158","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42489412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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