@article{fdi:010067640, title = {{T}he {Y}ouga gold deposit, {B}urkina {F}aso}, author = {{W}oodman, {K}. {K}. and {B}aratoux, {L}enka and {S}omda, {A}. and {S}iebenaller, {L}.}, editor = {}, language = {{ENG}}, abstract = {{T}he {Y}ouga gold deposits are located in southern {B}urkina {F}aso, close to the border with {G}hana and classified as epigenetic mesothermal orogenic type gold deposits. {T}hey are hosted within or adjacent to {T}arkwaian-type metasediments of the {Y}ouga {B}asin, composed of a succession of arkosic sandstones, conglomerates and subordinate chlorite schists. {T}he {Y}ouga deposits are characterized by two distinct styles of mineralization; the moderately to weakly silicified host rock with quartz stockwork veining and pyrite as the predominant sulphide which generally grades between 0.5 and 2 g/t and the intensely silicified arkose with abundant quartz veins and more diverse sulphides (pyrite, arsenopyrite, chalcopyrite, pyrrhotite and galena) which generally grades >3 g/t. {T}he alteration paragenesis associated with the mineralized vein stockwork is characterized by quartz, ankerite, albite, chlorite and pyrite. {T}he first mineralization episode occurred under brittle-ductile conditions during the {D}1({Y}) deformation event characterized by {E}-{W} trending penetrative to discrete structures. {G}old is concentrated in zones affected by irregular fracturing, quartz veining and occasional brecciation. {R}eworking of these structures during {D}2({Y}), by {N}-{S} to {NE}-trending sub-vertical shear zones, lead to further economic concentration of gold found in eight individual deposits, all localized in or immediately adjacent to {T}arkwaian-type sediments ({M}ain, {E}ast, {W}est {Z}one 1, 2, and 3, {A}2{NE}, {NTV} and {Z}ergore). {A}bsolute age of mineralization is unknown as well as that of the host sediments; however stratigraphic and structural craton-wide correlations suggest that the mineralization occurred after 2110 {M}a if not much later. {C}ommercial production was achieved at the {Y}ouga {G}old {M}ine in 2008 and as of {D}ecember 31st, 2014 has produced 537,621 oz of gold.}, keywords = {{G}old mineralization ; {W}est {A}frica ; {P}aleoproterozoic ; {B}urkina {F}aso ; {Y}ouga deposit ; {BURKINA} {FASO}}, booktitle = {}, journal = {{O}re {G}eology {R}eviews}, volume = {78}, numero = {}, pages = {631--638}, ISSN = {0169-1368}, year = {2016}, DOI = {10.1016/j.oregeorev.2015.11.015}, URL = {https://www.documentation.ird.fr/hor/fdi:010067640}, }