Mineralogy and Petrology最新文献

{"title":"Geochemistry of tourmaline-rich rocks in the Gavião Block, Northern São Francisco craton: implications for its formation","authors":"Eliana Marinho Branches Farias, Stefano Albino Zincone, Cláudia dos Santos, Gláucia Nascimento Queiroga, Flávia Braga de Oliveira, Gilberto Henrique Tavares Álvares da Silva, Leonardo Martins Graça","doi":"10.1007/s00710-024-00852-7","DOIUrl":"https://doi.org/10.1007/s00710-024-00852-7","url":null,"abstract":"<p>Tourmaline is a valuable forensic mineral that contains a wide range of elemental components capable of reconstructing its geologic evolution. In this study, we developed detailed petrographic and geochemical research on tourmaline-bearing rocks and tourmalinites found surrounding the ca. 3.30 Ga rhyolite of the Gavião Block, northern São Francisco Craton. Two distinct types of mineral assemblages in the tourmaline-bearing rocks are recognized based on the presence of sulfides, oxide minerals, and carbonaceous matter. Along with these tourmaline-bearing rocks, tourmalinite samples are found. The mineral chemistry of tourmalines from the two types of tourmaline-bearing rocks reveals mainly schorl-dravite as tourmaline from a mineral assemblage containing quartz, tourmaline, pyrite, and hematite, and a diverse composition ranging from schorl-dravite, feruvite-uvite, and schorl-feruvite solid solutions for tourmalines present in the mineral assemblage that contains quartz, pyrite, and carbonaceous matter. The tourmaline composition is essentially foitite-schorl in tourmalinite samples. Most of the metasedimentary rocks studied have felsic and mafic source compositions. The interaction of hydrothermal fluid was crucial for the formation of sulfide and tourmaline minerals. However, distinct tourmaline origins are recognized in tourmaline-rich rocks, pointing out the relevance of sedimentary and metamorphic processes.</p>","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140156200","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":"Diamond sources of the Juína region, Amazonian craton: textural and mineral chemical characteristics of Kimberley-type pyroclastic kimberlites","authors":"Izaac Cabral-Neto, E. Ruberti, D. Graham Pearson, Yan Luo, R. G. Azzone, Francisco V. Silveira, Vidyã V. Almeida","doi":"10.1007/s00710-023-00849-8","DOIUrl":"https://doi.org/10.1007/s00710-023-00849-8","url":null,"abstract":"","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138943910","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 auriferous quartz lode of the Veloso deposit, Quadrilátero Ferrífero of Minas Gerais, Brazil: geological characterisation and constraints from tourmaline boron isotopes","authors":"Júlia S. Pimenta, Alexandre R. Cabral, Glaucia Queiroga, Cristiano Lana, Miguel Tupinambá, Armin Zeh, Rogerio Kwitko-Ribeiro","doi":"10.1007/s00710-023-00848-9","DOIUrl":"https://doi.org/10.1007/s00710-023-00848-9","url":null,"abstract":"<p>Veloso is one of numerous and poorly documented auriferous deposits of Ouro Preto, the town that symbolises the gold rush in Brazil at the turn of the seventeenth century. We present the results of underground geological mapping, combined with a boron (B) isotopic study of tourmaline, an elusive mineral in the auriferous quartz lode of the historical Veloso deposit. Its lode is characteristically brecciated in a host rock that shows no cataclastic fabric. The host rock is itabirite, a metamorphosed banded iron formation. Tourmaline is essentially dravite and locally occurs as abundant crystals in breccia-cementing pockets of goethite, formed from the oxidation of sulfide minerals. Gold is spatially associated with tourmaline in the goethite-rich pockets. In situ measurements for B isotopes yielded δ¹¹B values in the range of −21 to −9‰. This range is similar to that reported for tourmaline of the Passagem de Mariana deposit, the best documented auriferous lode deposit at the south-eastern edge of the Quadrilátero Ferrífero. The tourmaline B isotopic data reflect auriferous fluids of crustal origin that sourced B from metasedimentary rocks, which may include a non-marine evaporitic component.</p>","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138494547","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":"Crystal chemistry and origin of epidote-(Sr) in alkaline rocks of the teschenite association (Silesian Unit, Outer Western Carpathians, Czech Republic)","authors":"Kamil Kropáč, Zdeněk Dolníček, Pavel Uher, David Buriánek, Tomáš Urubek","doi":"10.1007/s00710-023-00847-w","DOIUrl":"https://doi.org/10.1007/s00710-023-00847-w","url":null,"abstract":"","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136281898","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":"Correction to: Reply to the comment by S. Bouhlel","authors":"Nejib Jemmali, Larbi Rddad, Marta Sośnicka, Emna Rahali, Fouad Souissi, Emmanuel John Carranza","doi":"10.1007/s00710-023-00846-x","DOIUrl":"https://doi.org/10.1007/s00710-023-00846-x","url":null,"abstract":"","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134911865","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":"Mallestigite, Pb3Sb(SO4)(AsO4)(OH)6·3H2O, from the type locality – new data, crystal structure, and structural relationships","authors":"Kurt Mereiter, Franz Walter, Hans-Peter Bojar","doi":"10.1007/s00710-023-00837-y","DOIUrl":"https://doi.org/10.1007/s00710-023-00837-y","url":null,"abstract":"Abstract A report of the supergene mineral mallestigite, Pb 3 Sb 5+ (SO 4 )(AsO 4 )(OH) 6 ·3H 2 O, from the type locality Neufinkenstein-Grabanz district, Mallestiger Mittagskogel, Carinthia, Austria, is given in order to close gaps that have been left open since its first description. At the type locality, the dump of an abandoned small copper-lead-zinc mine, the mineral occurs frequently in up to ⁓2 mm long clear colourless idiomorphic hexagonal prisms {100} terminated by the bipyramid {101}. Details of the occurrence, paragenesis, physical properties, a FTIR spectrum and X-ray powder diffraction data are reported. Chemical analysis in a scanning electron microscope in conjunction with a crystal structure analysis gave the empirical formula Pb 3.02 Sb 1.06 (SO 4 ) 0.96 (AsO 4 ) 0.97 (OH) 6 ·3H 2 O. An ab-initio crystal structure determination with CCD diffractometer data, Mo K α radiation, and a nearly untwinned crystal proved that mallestigite is hexagonal, space group P 6 3 , a = 8.9326(4), c = 11.1044(5) Å, V = 767.33(8) Å 3 , Z = 2, and gave a final R 1 = 0.0184 for 1632 independent reflections with I &gt; 2σ( I ). Mallestigite belongs to the fleischerite group. The structure is built up from [Sb 5+ (OH) 6 ] 1– octahedra which are linked by triplets of edge-sharing Pb 2+ into chains [Pb 3 Sb(OH) 6 ] 5+ extending along a 6 3 axis. Each three of such chains are bridged by triplets of H 2 O and by rows of SO 4 2– and AsO 4 3– tetrahedra alternating along a 3-fold axis and showing very different links to the Pb atom. Pb 2+ is in a strongly distorted one-sided [9]-coordination by O atoms that makes the structure clearly hemimorphic. Structural relationships to the fleischerite group minerals schaurteite, genplesite, despujolsite and fleischerite as well as to synthetic Ba 3 Sn 4+ (SeO 4 ) 2 (OH) 6 ·3H 2 O are outlined and changes in the space group symmetry of despujolsite ( P $$overline6$$ <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"> <mml:mover> <mml:mn>6</mml:mn> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> 2c → P 6 3 / mmc ) and fleischerite ( P $$overline6$$ <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"> <mml:mover> <mml:mn>6</mml:mn> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> 2c → P 6 3 ) are proposed.","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135980599","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":"Noble and base metal geochemistry of late- to post-orogenic mafic dykes from central Spain","authors":"D. Orejana, María García-Rodríguez, Cristina de Ignacio, Sergio Ruiz-Molina","doi":"10.1007/s00710-023-00844-z","DOIUrl":"https://doi.org/10.1007/s00710-023-00844-z","url":null,"abstract":"","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41462481","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":"A tribute to Lanchand (Lalou) Govindram Gwalani","authors":"Kirtikumar Randive, Anton Chakhmouradian, Peter Downes","doi":"10.1007/s00710-023-00845-y","DOIUrl":"https://doi.org/10.1007/s00710-023-00845-y","url":null,"abstract":"","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135304558","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":"Geochemistry and formation of agate-bearing lithophysae in Lower Permian volcanics of the NW-Saxonian Basin (Germany)","authors":"J. Götze, R. Möckel, Yuanming Pan, A. Müller","doi":"10.1007/s00710-023-00841-2","DOIUrl":"https://doi.org/10.1007/s00710-023-00841-2","url":null,"abstract":"","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43484812","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":"Mineralogy of Pakkanadu carbonatites and associated rocks, South India: constraints on evolution and evidences for REE enrichment","authors":"S. Mahapatro, T. Meshram, Mahesh Korakappa","doi":"10.1007/s00710-023-00843-0","DOIUrl":"https://doi.org/10.1007/s00710-023-00843-0","url":null,"abstract":"","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49261508","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}