Mapeamento geológico do Pegmatito Alto do Tibiri: aspectos estruturais e mineralógicos
<p>The Alto Tibiri is a pegmatite body located in the southern region of the Rio Grande do Norte, in Parelhas city, geologically inserted in the Borborema Pegmatite Province and occur intruding the mica schists of the Seridó Formation. Currently, both mica and feldspar are commercially exploit...
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| Format: | Article |
| Language: | English |
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Instituto Federal de Educação, Ciência e Tecnologia da Paraíba
2017-05-01
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| Series: | Revista Principia |
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| Online Access: | http://periodicos.ifpb.edu.br/index.php/principia/article/view/1062 |
| _version_ | 1811249785969049600 |
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| author | Paulo Jedean da Silva Araújo Vinicius Anselmo Carvalho Lisboa José Ramilson dos Santos Oliveira |
| author_facet | Paulo Jedean da Silva Araújo Vinicius Anselmo Carvalho Lisboa José Ramilson dos Santos Oliveira |
| author_sort | Paulo Jedean da Silva Araújo |
| collection | DOAJ |
| description | <p>The Alto Tibiri is a pegmatite body located in the southern region of the Rio Grande do Norte, in Parelhas city, geologically inserted in the Borborema Pegmatite Province and occur intruding the mica schists of the Seridó Formation. Currently, both mica and feldspar are commercially exploited in this pegmatite body. In the field missions, 39 outcrops were described, in each one the main texture and mineralogical aspects of the outcropping rock were described. The geological mapping has allowed us to distinguish two types of schists, based on content and size of the mineral phases. There is a garnet rich schists and other with a relevant cordierite content. The studied region shows narrow pegmatite dykes, composed of quartz, feldspar, muscovite and/or biotite and black tourmaline, these dikes were classified as homogeneous. It’s possible to observe in Alto Tibiri a well- defined mineral zoning, as follows: i) border area, marked by the abundance of muscovite; ii) Zone II, composed of quartz, feldspar and mica, in which the main mineral resources occur (tantalite, spodumene, apatite, etc.) and iii) quartz pockets. The observed mineral zoning is similar to that described as mixed traditional pegmatite bodies.</p> |
| first_indexed | 2024-04-12T15:52:39Z |
| format | Article |
| id | doaj.art-2820d4d42fae4039803368848e564ae1 |
| institution | Directory Open Access Journal |
| issn | 1517-0306 2447-9187 |
| language | English |
| last_indexed | 2024-04-12T15:52:39Z |
| publishDate | 2017-05-01 |
| publisher | Instituto Federal de Educação, Ciência e Tecnologia da Paraíba |
| record_format | Article |
| series | Revista Principia |
| spelling | doaj.art-2820d4d42fae4039803368848e564ae12022-12-22T03:26:27ZengInstituto Federal de Educação, Ciência e Tecnologia da ParaíbaRevista Principia1517-03062447-91872017-05-01133293610.18265/1517-03062015v1n33p29-36486Mapeamento geológico do Pegmatito Alto do Tibiri: aspectos estruturais e mineralógicosPaulo Jedean da Silva Araújo0Vinicius Anselmo Carvalho Lisboa1José Ramilson dos Santos Oliveira2Núcleo de Estudos em Geologia e Geofísica Aplicada no Semiário (NUGGAP), Instituto Federal de Educação, Ciência e Tecnologia da Paraíba (IFPB – Campus Picuí)Núcleo de Estudos em Geologia e Geofísica Aplicada no Semiário (NUGGAP), Instituto Federal de Educação, Ciência e Tecnologia da Paraíba (IFPB – Campus Picuí)Núcleo de Estudos em Geologia e Geofísica Aplicada no Semiário (NUGGAP), Instituto Federal de Educação, Ciência e Tecnologia da Paraíba (IFPB – Campus Picuí),<p>The Alto Tibiri is a pegmatite body located in the southern region of the Rio Grande do Norte, in Parelhas city, geologically inserted in the Borborema Pegmatite Province and occur intruding the mica schists of the Seridó Formation. Currently, both mica and feldspar are commercially exploited in this pegmatite body. In the field missions, 39 outcrops were described, in each one the main texture and mineralogical aspects of the outcropping rock were described. The geological mapping has allowed us to distinguish two types of schists, based on content and size of the mineral phases. There is a garnet rich schists and other with a relevant cordierite content. The studied region shows narrow pegmatite dykes, composed of quartz, feldspar, muscovite and/or biotite and black tourmaline, these dikes were classified as homogeneous. It’s possible to observe in Alto Tibiri a well- defined mineral zoning, as follows: i) border area, marked by the abundance of muscovite; ii) Zone II, composed of quartz, feldspar and mica, in which the main mineral resources occur (tantalite, spodumene, apatite, etc.) and iii) quartz pockets. The observed mineral zoning is similar to that described as mixed traditional pegmatite bodies.</p>http://periodicos.ifpb.edu.br/index.php/principia/article/view/1062Borborema Pegmatitic Province. Alto Tibiri Pegmatite. Geological Mapping |
| spellingShingle | Paulo Jedean da Silva Araújo Vinicius Anselmo Carvalho Lisboa José Ramilson dos Santos Oliveira Mapeamento geológico do Pegmatito Alto do Tibiri: aspectos estruturais e mineralógicos Revista Principia Borborema Pegmatitic Province. Alto Tibiri Pegmatite. Geological Mapping |
| title | Mapeamento geológico do Pegmatito Alto do Tibiri: aspectos estruturais e mineralógicos |
| title_full | Mapeamento geológico do Pegmatito Alto do Tibiri: aspectos estruturais e mineralógicos |
| title_fullStr | Mapeamento geológico do Pegmatito Alto do Tibiri: aspectos estruturais e mineralógicos |
| title_full_unstemmed | Mapeamento geológico do Pegmatito Alto do Tibiri: aspectos estruturais e mineralógicos |
| title_short | Mapeamento geológico do Pegmatito Alto do Tibiri: aspectos estruturais e mineralógicos |
| title_sort | mapeamento geologico do pegmatito alto do tibiri aspectos estruturais e mineralogicos |
| topic | Borborema Pegmatitic Province. Alto Tibiri Pegmatite. Geological Mapping |
| url | http://periodicos.ifpb.edu.br/index.php/principia/article/view/1062 |
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