@article{fdi:010090323,
  title = {{C}haracterisation and rare-metal potential of the {W}inneba-{M}ankoadze pegmatites, {S}outhern {G}hana : evidence of two pegmatite fields},
  author = {{A}dams, {S}. {J}. and {V}an {L}ichtervelde, {M}arieke and {A}mponsah, {P}. {O}. and {N}ude, {P}. {M}. and {A}siedu, {D}. {K}. and {D}ampare, {S}. {B}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n southern {G}hana, the region along the coast between {A}ccra and {C}ape {C}oast hosts a large number of pegmatites mineralized in lithium, niobium-tantalum and tin. {T}he pegmatites occur in many distinct groups, each extending over several kilometers. {T}hey intrude metasedimentary units of the {B}irimian {S}upergroup, and are associated with early to late orogenic granite intrusions which are metaluminous, sterile, and too old to be potential parental granites for the pegmatites. {I}n this study, we characterized the {W}inneba-{M}ankoadze group of geographically coeval pegmatites, using field description, petrography, rare-metal mineralogy and accessory mineral geochemistry on micas, garnet and {N}b-{T}a-{S}n minerals, in order to determine its rare-metal potential and to investigate its origin. {T}he results indicate that the pegmatites are part of the albite-spodumene type of the {L}ithium-{C}esium-{T}antalum ({LCT}) family. {T}he rare metal mineral assemblages are particularly complex and display relevant oxide species such as columbite- and wodginite-group minerals, tapiolite, microlite, cassiterite and rutile, which are evidences of an extremely evolved magmatic system. {B}ased on mineral assemblages, wholerock geochemistry, and mineral geochemistry on garnet, micas and the {CGM}, two pegmatite fields are distinguished in the {W}inneba-{M}ankoadze group, and an anatectic origin is proposed. {F}or the first time in {W}est {A}frica, we fully describe a highly fractionated {LCT}-family pegmatite field comparable to the most evolved pegmatite bodies in the world.},
  keywords = {{R}are-element pegmatites ; {S}podumene ; {C}olumbite-group minerals ; {E}xtreme fractionation ; {GHANA}},
  booktitle = {},
  journal = {{J}ournal of {A}frican {E}arth {S}ciences},
  volume = {207},
  numero = {},
  pages = {105049 [18 p.]},
  ISSN = {1464-343{X}},
  year = {2023},
  DOI = {10.1016/j.jafrearsci.2023.105049},
  URL = {https://www.documentation.ird.fr/hor/fdi:010090323},
}