Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/30096

TitleAnálise descritiva das unidades portadoras de mineralização tantalífera em pegmatitos do sul da Província Zambeziana (Moçambique)
Other titlesDescriptive analysis of tantalum paragenesis and tantalum pegmatites from the South Pegmatite District of Zambezian Province (Mozambique)
Author(s)Gomes, C. Leal
Marques, João
Dias, Patrícia Sofia Alves
Costa, João Carlos
Issue date2008
Abstract(s)The differences between NYF and LCT pegmatite evolution and regional distribution in Zambézia Pegmatite Province are the main determinants of its tantalum potentiality. Alto Ligonha District in Central Zambézia holds important Ta resources in relation to LCT giant pegmatites, which have been mined for decades and are reasonably known. Minor attention was dedicated since now to the South District. Recent studies dedicated to this domain revealed several pegmatite fields with a great diversity of Ta mineralization: M´Luma – Nicula - low Ta NYF pegmatites, with high Sc, Y, Ti, R.E. and ixiolite-cheralite dominant ores; Rio Licungo - low Ta NYF and beryl pegmatites, with high Bi, W and struverite dominant ores; Rio Namivo - low to high Ta NYF to LCT pegmatites, beryl rich with petalite and spodumene as high temperature remnants and tantalite-tapiolite-microlite dominant ores. Regional distribution and paragenetic analysis of some key pegmatites suggest that South District reveals a more proximal and sub-autochthonous emplacement of the pegmatite bodies in tangential ruptures under the cover terrenes of Mamala to Morrua Formations, which undergone a different evolution since Pan-African event to uplifting an exhumation. In what concerns the strategic stage of exploration, such a pattern of emplacement and evolution, suggests the possibility of future detection of unknown high Ta pegmatites at the South District.
TypeConference paper
URIhttp://hdl.handle.net/1822/30096
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CIG-R - Comunicações

Files in This Item:
File Description SizeFormat 
09A012.pdf269,15 kBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID