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6942237 
Journal Article 
Geochemical analysis of the Pinguino vein system, Patagonia, Argentina - implications in exploration 
Lopez, L; Guido, DM; Jovic, SM; Paez, GN; Ruiz, R; Permuy Vidal, C; , 
2013 
SGU-SVERIGES GEOLOGISKA UNDERSOKNING-GEOLOGY SURVEY SWEDEN 
UPPSALA 
833-836 
WOS:000337983900210 
Geochemical data from 19 of the 70 veins of the Pinguino project were analysed. Pinguino vein system is characterized by two vein types: early polymetallic rich veins, and late quartz rich veins. Determinations of average vein metal values and spatial distribution of In, Au, Ag; Pb, Zn, Cu; As, Cd and Mn were performed in order to conform groups with similar geochemical behaviour. Individual elements distribution shows a main metals source point on top of the interpreted Kasia dioritic intrusion, with other secondary metal sources at KAL, TR, LUN, FAN, MN, KAR and ISL veins areas/intrusives. According to Ag/Au ratio and indium content three trends were identified; T1 (high In and low Ag/Au) is related to Lower Jurassic diorites and sulphide-rich veins. T2 (low to highest Au/Ag and low In values) is related to Middle Jurassic andesitic porphyries and Ag-rich quartz-rich veins. T3 gather veins with intermediate In and Ag/Au values, reflecting the mixing between the two main type of veins. These trends have a clear geographic association with Kasia intrusion and show a zonation pattern. The geochemical distribution and relationship of metal sources with intrusions should be considered in future Deseado Massif exploration. 
Jonsson, E; 
978-91-7403-207-9 
12th Biennial SGA Meeting on Mineral Deposit Research for a High-Tech World 
Uppsala, SWEDEN