Argentina, El Pantano.27 Feb 2023 17:25
On the subject of pending news, an MD & A filed on SEDAR on 30.01.2023 referring to the 3 & 6 month periods ending 30.11.2022 summarised the work in Argentina and concluded that “the work has defined a high priority target to be followed in the coming two months”. This also implies that the “wider geochemical analysis, ground magnetics and mapping” mentioned in a 28.06.2022 RNS could have been completed within the December-February peak field season and be ready for release fairly soon.
Although the “high priority target” is presumably the La Esfinge ridge located within the Pantano 2 licence area it is possible that the “wider” surveys may include the San Antonio region first identified by Minsud Resources Corp pre-2011 as including three geophysical targets, all within the three Antonio licences in the SE of Orosur's Exploration and JV Agreement licence area. The three targets are quite diverse in type, including a deep potential mineralised feeder and other resistive and conductive signatures indicative of an epithermal system. What is especially significant however is that the host rocks are of the Chon-Aike formation, the host for 90% of the major epithermal mineral prospects and mines of the Deseado Massif mining province, and that there is a SE-NW structural trend to these rocks indicated by airborne magnetic survey, continuous from San Antonio to the La Esfinge target over a distance of 30km. La Esfinge appears to be within rocks [La Matilde Formation] which are immediately overlying, or laterally equivalent too, the Chon-Aike formation. The structural trend also continues further to the SE and includes the Atlas prospect 1-2km south of Antonio II and within a licence area probably still held by Colque Exploraciones or Golden Minerals.
For those who may not appreciate the significance of geological structural trends in mineral provinces, there is a parallel NW-SE trend immediately south of the La Esfinge – San Antonio trend, which runs from Anglo Gold's Cerro Vanguardia mine, 35km to the SE of San Antonio, to the Austral Gold, Pinguino prospect c10km south of San Antonio I. Cerro Vanguardia is a gold/silver quartz-vein complex hosted by the Chon-Aike formation, occupying a 15 x 10km area and comprising c60 economically mineable veins, 0-200m in depth and totalling over 100km in length. The veins comprise two sets, a predominant one at c320 degree strike and 65-90 NE dip, and a secondary at c105 strike and 60-80 SW dip. The Pinguino prospect is predominantly a silver [25M oz] , with secondary gold,zinc and lead, quartz-vein complex, 14.5 x 4km in area, comprising c70 veins, 113km in total length, up to 150m in depth and up to 13m width, in three sets of 330, 300 [both with SW 60-80 dip] and 70 degree strike. A major SE-NW trending fault [Tranquilo Fault zone] appears to have been the main mineralizing feeder, both for this and the Vanguardia veins, but the host rocks at Pinguino are of pre-Chon-Aike age.
To be continued