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Calc-silicate Gemstones from the Meluco Region, Cabo Delgado, Mozambique

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Advances in Geoengineering, Geotechnologies, and Geoenvironment for Earth Systems and Sustainable Georesources Management

Part of the book series: Advances in Science, Technology & Innovation ((ASTI))

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Abstract

Northeastern Mozambique, regional Proterozoic formations in the Meluco region, especially its metacarbonate members, host Mg-B-rich skarns bearing coloured dravite and other B-Mg-calc-silicate gemstones, in Micute and N’Djekwa area. Following the probable lithological precursor composition, these peculiar gemstones consistently reveal geochemical Mg-B signature that could have been inherited from an evaporite ancestry, inter-stratified in the protolithic Lalamo sequence.

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References

  • Chikwanda P (n/d) Minas de Meluco–Micute Project, Cabo Delgado Mozambique. Technical report on exploration work done on prospecting license, 7283L, Cabo Delgado Mozambique (Unpublished Report)

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  • Leal Gomes C (2019) Auto de visita Ă  área de prospecção e pesquisa, 7283L da Empresa, Minas de Meluco SA–SE do curso mĂ©dio do Rio Messalo. RelatĂłrio InĂ©dito para Empresa Minas de Meluco SA, Moçambique (Unpublished Report)

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  • Leal Gomes C, Marques J, Moiana M (2012) Quadro geolĂłgico conceptual para a localização dos recursos base de gemas no Norte de Moçambique. In: Actas do IÂş Congresso Nacional de Geologia de Moçambique, Maputo, Moçambique

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Author information

Authors and Affiliations

  1. School of Sciences, Department of Earth Sciences, University of Minho, Braga, Portugal

    Carlos Leal Gomes

  2. Landscapes, Heritage and Territory Laboratory, University of Minho, Braga, Portugal

    Carlos Leal Gomes

Authors
  1. Carlos Leal Gomes
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Correspondence to Carlos Leal Gomes .

Editor information

Editors and Affiliations

  1. Department of Geotechnical Engineering and LABCARGA, School of Engineering - ISEP, Polytechnic, Porto, Portugal

    Helder I. Chaminé

  2. Department of Geotechnical Engineering and LGMC, School of Engineering - ISEP, Polytechnic, Porto, Portugal

    José Augusto Fernandes

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© 2023 The Author(s), under exclusive license to Springer Nature Switzerland AG

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Gomes, C.L. (2023). Calc-silicate Gemstones from the Meluco Region, Cabo Delgado, Mozambique. In: Chaminé, H.I., Fernandes, J.A. (eds) Advances in Geoengineering, Geotechnologies, and Geoenvironment for Earth Systems and Sustainable Georesources Management. Advances in Science, Technology & Innovation. Springer, Cham. https://doi.org/10.1007/978-3-031-25986-9_19

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