ANZA GNM Mines drill results5 Oct 2020 17:36
For those interested in the regional context of the ANZA project, the latest drilling results from the area are those released by Royal Road Minerals [RRM] last Thursday from the GNM Mines situated c15km NW of OMI's APTA prospect and adjacent to OMI's 6219 hectare ICQ-080035X Pending Concession Application, La Cejita target area. These results can be accessed online at www.royalroadminerals.com ; click on 'latest' and then on 'Sept 29, 2020 News' re 'drilling results & exploration update for guintar-niverengo project' .
The GNM Mines [see posts dated 28.05.2020 & 30.12.2018 for details] are subject to an exploration agreement between RRM and Mineros S A{prospective 50% holding in joint company], and not as implied elsewhere on this forum, with Agnico Eagle Mines [which has an 18.4% share holding in RRM].
The significance of the drill results lies not so much in the Au Eq assays quoted but far more so in the stated “multi-element geochemical vector studies” which will have incorporated data from the drill-cores into a regional model attempting to identify deeper primary gold sources. Since the GNM mineralisation is considered to be a Miocene-age hydrothermal event [a skarn-type system hosted in Penderisco Formation carbonates], the primary sources will also be of that age and possibly porphyry-related, vein or breccia intrusives at kilometre-plus depth. The RRM model appears to favour potential targets west of the Guintar area. However, until the Margaritas Pending Concession Application is resolved further-drilling is on hold.
Multi-element vector studies of the type employed by RRM have been developed during the past decade and in this variant use the composition of epidote, chlorite, alunite and other hydrothermal minerals to predict the likely direction and distance to centres of mineralisation. However, if you access Figure 1 on the RRM webpage, remember that this is a probabilistic predictive map, not a map of economically mineable gold. It is however indicative of the type of investigation we may see for those parts of ANZA where drilling may soon be permitted ie Charrascala, and Guaimarala. Vector analysis would not be appropriate for APTA, if proven to be primarily a VMS type deposit, as the mineralisation would have emanated from submarine hydrothermal vents not traceable to a localised source, and is also hosted in Middle Cretaceous-age, Barrosa Formation, volcano-clastic rocks. The metallogenesis at APTA, as detailed in my post of 16.01.2019, is complex and problematic, so it will be interesting to see what further drilling is scheduled at this stage.
To be continued.