@article{fdi:010067639, title = {{T}he {N}assara gold prospect, {G}aoua {D}istrict, southwestern {B}urkina {F}aso}, author = {{O}uiya, {P}. and {S}iebenaller, {L}. and {S}alvi, {S}. and {B}{\'e}ziat, {D}. and {N}aba, {S}. and {B}aratoux, {L}enka and {N}ar{\'e}, {A}. and {F}ranceschi, {G}.}, editor = {}, language = {{ENG}}, abstract = {{T}he {N}assara-{A}u prospect is located in the {B}irimian {B}oromo {G}reenstone {B}elt in southwestern {B}urkina {F}aso. {I}t is part of a larger mineralized field that includes the {C}u-{A}u porphyry system of {G}aoua, to the north. {A}t {N}assara, mineralization occurs within the {W}est {B}ade {S}hear {Z}one that follows the contact between volcanic rocks (basalt and andesite) and volcano-sediments (pyroclastics and black shales) at the southern termination of the {B}oromo {B}elt. {G}old is associated with pyrite and other {F}e-bearing minerals that occur disseminated within the sheared volcanic and volcano-sedimentary rocks. {I}n particular, highest grades are distinguished in alteration halos of small quartz-albite-ankerite veins that form networks along the shear zone. {H}ere, pyrites are marked by {A}s-poor and {A}s-rich growth zones, the latter containing gold inclusions. {G}old mineralization formed during {D}2({NA}). {S}ubsequent shear fractures related to {D}3({NA}) related are devoid of gold. {N}assara is a classical orogenic gold occurrence where gold is associated to disseminated pyrite along quartz veins.}, keywords = {{W}est {A}frican {C}raton ; {B}oromo {G}reenstone {B}elt ; {B}urkina {F}aso ; {O}rogenic gold ; {S}hear zone ; {BURKINA} {FASO}}, booktitle = {}, journal = {{O}re {G}eology {R}eviews}, volume = {78}, numero = {}, pages = {623--630}, ISSN = {0169-1368}, year = {2016}, DOI = {10.1016/j.oregeorev.2015.11.026}, URL = {https://www.documentation.ird.fr/hor/fdi:010067639}, }