Primeiros dados geoquímicos das lignites de uma nova ocorrência no bilene, Gaza, Moçambique
Pleistocene lignite seams outcrop in the Bilene area constitute a lagoon deposit associated with a system of coastal lakes with large movable dunes. The organic and inorganic geochemical study of five samples of these lignites is herein presented. The organic geochemistry data indicates that these lignites have high ash yield, being therefore considered as carbonaceous rocks. The volatile matter, C, H, N and O contents are considered within the expected for lignites. The total sulfur (St) content is low. The atomic ratios H/C and O/C confirm the rank of these lignites. The major element contents corroborate the mineralogical composition identified in one of the studied samples. CaO and St are associated with organic matter, with Ca occurring as humates. Most trace elements show intermediate affinity. Zr and Hf are slightly to significant enriched and are associated with zircon. In these samples the As exhibits organic affinity. Rb displays inorganic affinity, occurring in silicates.
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Laboratório Nacional de Energia e Geologia
2020
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Subjects: | Bilene, Mozambique, lignite, organic geochemistry, inorganic geochemistry., |
Online Access: | http://hdl.handle.net/10261/229879 http://dx.doi.org/10.13039/501100001871 |
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dig-incar-es-10261-2298792021-02-23T04:58:31Z Primeiros dados geoquímicos das lignites de uma nova ocorrência no bilene, Gaza, Moçambique First geochemical data of the lignites of a new occurrence in bilene, Gaza, Mozambique Flores, D. Suárez Ruiz, Isabel Nhamutole, N. Milisse, D. Milisse, D. Fundação para a Ciência e a Tecnologia (Portugal) Bilene Mozambique lignite organic geochemistry inorganic geochemistry. Pleistocene lignite seams outcrop in the Bilene area constitute a lagoon deposit associated with a system of coastal lakes with large movable dunes. The organic and inorganic geochemical study of five samples of these lignites is herein presented. The organic geochemistry data indicates that these lignites have high ash yield, being therefore considered as carbonaceous rocks. The volatile matter, C, H, N and O contents are considered within the expected for lignites. The total sulfur (St) content is low. The atomic ratios H/C and O/C confirm the rank of these lignites. The major element contents corroborate the mineralogical composition identified in one of the studied samples. CaO and St are associated with organic matter, with Ca occurring as humates. Most trace elements show intermediate affinity. Zr and Hf are slightly to significant enriched and are associated with zircon. In these samples the As exhibits organic affinity. Rb displays inorganic affinity, occurring in silicates. Este trabalho foi financiado por fundos nacionais através da FCT – Fundação para a Ciência e a Tecnologia, I.P., no âmbito do projecto Refª UIDB/04683/2020 e pelo Projecto PaleoMoz (financiado pelo Museu Nacional de Geologia, Programa Aga-Khan/FCT e National Geographic Society Standard Grant CP-109R-17). 2021-02-17T10:50:14Z 2021-02-17T10:50:14Z 2020 2021-02-17T10:50:15Z comunicación de congreso http://purl.org/coar/resource_type/c_5794 issn: 1647-581X Comunicacoes Geologicas 107 (Special Issue 2) : 97-100 (2020) http://hdl.handle.net/10261/229879 http://dx.doi.org/10.13039/501100001871 Publisher's version https://www.lneg.pt/wp-content/uploads/2020/05/Volume_107_CIG.pdf Sí open Laboratório Nacional de Energia e Geologia |
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Bilene Mozambique lignite organic geochemistry inorganic geochemistry. Bilene Mozambique lignite organic geochemistry inorganic geochemistry. |
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Bilene Mozambique lignite organic geochemistry inorganic geochemistry. Bilene Mozambique lignite organic geochemistry inorganic geochemistry. Flores, D. Suárez Ruiz, Isabel Nhamutole, N. Milisse, D. Milisse, D. Primeiros dados geoquímicos das lignites de uma nova ocorrência no bilene, Gaza, Moçambique |
description |
Pleistocene lignite seams outcrop in the Bilene area constitute a lagoon deposit associated with a system of coastal lakes with large movable dunes. The organic and inorganic geochemical study of five samples of these lignites is herein presented. The organic geochemistry data indicates that these lignites have high ash yield, being therefore considered as carbonaceous rocks. The volatile matter, C, H, N and O contents are considered within the expected for lignites. The total sulfur (St) content is low. The atomic ratios H/C and O/C confirm the rank of these lignites. The major element contents corroborate the mineralogical composition identified in one of the studied samples. CaO and St are associated with organic matter, with Ca occurring as humates. Most trace elements show intermediate affinity. Zr and Hf are slightly to significant enriched and are associated with zircon. In these samples the As exhibits organic affinity. Rb displays inorganic affinity, occurring in silicates. |
author2 |
Fundação para a Ciência e a Tecnologia (Portugal) |
author_facet |
Fundação para a Ciência e a Tecnologia (Portugal) Flores, D. Suárez Ruiz, Isabel Nhamutole, N. Milisse, D. Milisse, D. |
format |
comunicación de congreso |
topic_facet |
Bilene Mozambique lignite organic geochemistry inorganic geochemistry. |
author |
Flores, D. Suárez Ruiz, Isabel Nhamutole, N. Milisse, D. Milisse, D. |
author_sort |
Flores, D. |
title |
Primeiros dados geoquímicos das lignites de uma nova ocorrência no bilene, Gaza, Moçambique |
title_short |
Primeiros dados geoquímicos das lignites de uma nova ocorrência no bilene, Gaza, Moçambique |
title_full |
Primeiros dados geoquímicos das lignites de uma nova ocorrência no bilene, Gaza, Moçambique |
title_fullStr |
Primeiros dados geoquímicos das lignites de uma nova ocorrência no bilene, Gaza, Moçambique |
title_full_unstemmed |
Primeiros dados geoquímicos das lignites de uma nova ocorrência no bilene, Gaza, Moçambique |
title_sort |
primeiros dados geoquímicos das lignites de uma nova ocorrência no bilene, gaza, moçambique |
publisher |
Laboratório Nacional de Energia e Geologia |
publishDate |
2020 |
url |
http://hdl.handle.net/10261/229879 http://dx.doi.org/10.13039/501100001871 |
work_keys_str_mv |
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