Peter W. U. Appel, Karsten Secher; On a gold mineralization in the Precambrian Tartoq Group, SW Greenland. Journal of the Geological Society ; 141 (2): 273–278. doi: https://doi.org/10.1144/gsjgs.141.2.0273
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In the Precambrian Tartoq Group, SW Greenland, gold occurs in three parageneses associated with arsenopyrite-pyrite, tennantite and chalcopyrite. The gold-bearing sulphide mineralizations appear as conformable quartz layers, lenses and veins in greenstones of basaltic composition. Gold particles in the arsenopyrite-pyrite layers have a true fineness of c. 990, in the tennantite-rich veins a fineness of c. 720 and a fineness of c. 500 in the chalcopyrite quartz veins. The arsenopyrite-pyrite layers are of submarine exhalative origin, whereas the tennantite and the chalcopyrite quartz veins and lenses are of diagenetic and/or metamorphic origin.