@article{fdi:010087365,
  title = {{O}re texture, mineralogy and whole rock geochemistry of the iron mineralization from {E}dea {N}orth {A}rea, {N}yong {C}omplex, {S}outhern {C}ameroon : implication for origin and enrichment process},
  author = {{M}bang {B}onda, {B}.{M}. and {E}tame, {J}. and {K}ouske, {A}.{P}. and {B}ayiga, {E}.{C}. and {N}gon {N}gon, {G}.{F}. and {M}ba{\¨ie}, {S}.{J}. and {G}{\'e}rard, {M}artine},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his study presents the ore texture, mineralogy and whole rock geochemistry of iron occurrence from the {E}dea {N}orth area located at the upper limit of the {N}yong {U}nit, part of the {C}ongo craton. {T}his iron mineralization is of magnetite quartzite type enclosed by metamorphic rocks of the granulite facies. {T}wo main facies have been identified over the study area including the banded and the massive facies. {T}he mineralogical set of these facies is in majority represented by magnetite, quartz and pyroxene martite in addition to minor biotite, apatite, and amphibole. {M}agnetite presents as irregular and elongated minerals which can contain quartz inclusions of various shapes and sizes, as blasts clustering, around pyroxenes and isolated xenomorphic magnetite minerals in the silicate phases. {Q}uartz varies from fine to coarse-grained and ribbon quartz. {T}his indicates re-crystallization and deformation during metamorphism. {E}lectron microprobe analysis on magnetite and martite show {F}e2{O} 3 contents that vary between 96.11 and 99.76. {W}hole rock chemical data showed that {F}e-contents are as high as 62.9 wt%. {T}he {S}i{O} 2 content varies between 33.8 wt% and 51.2 wt%. {I}ron oxides and {S}i{O} 2 are negatively correlated. {M}oreover, the low positive correlations between {A}l 2{O} 3 and {HFSE}, and {LILE} suggest a contribution of clastic materials in the protolith of studied materials. {T}he samples show low contents of {V}, {C}r, {B}a, {Z}r with respect to igneous rocks. {T}his may infer a sedimentary origin for the studied rocks; furthermore, these materials may have undergone hydrothermal alteration. {T}he {REE} patterns reveal enrichment in {LREE} compared to {HREE}. {S}ome samples show positive {E}u (1.82) and other negative anomalies {E}u (0.54 to 0.97). {T}he lack of {C}e anomalies suggests that the depositional environment of the {E}dea {N}orth iron occurrence was anoxic or suboxic. {O}verall, the {E}dea {N}orth iron occurrence may have undergone significant input from hydrothermal sources with imprints of the clastic during its deposition},
  keywords = {{CAMEROUN}},
  booktitle = {},
  journal = {{I}nternational {J}ournal of {G}eosciences},
  volume = {8},
  numero = {},
  pages = {659--677},
  ISSN = {2156-8359},
  year = {2017},
  DOI = {10.4236/ijg.2017.85036},
  URL = {https://www.documentation.ird.fr/hor/fdi:010087365},
}