Torex Gold was the only company to post drilling results from properties in Mexico during the week, releasing very good intercepts. The best gold result was an intercept over 37 m long grading more than 14 gpt gold, for a gpt*m of 521. All the intervals are from different deposits in the Limon Guajes project, located in Guerrero.
Here are some points on the press release describing the mineralization:
- The ELG Mine Complex …. is hosted in the Mesozoic carbonate-rich Morelos Platform, which has been intruded by Paleocene granodiorite stocks, sills, dikes and afterwards uplifted close to surface by maar-diatreme complexes.
- Skarn-hosted gold mineralization develops along contacts of the intrusive rocks and carbonate-rich sedimentary rocks
- At depth, the mineralization has a strong structural control related to the main stages of deformation
- Early-stage deposition corresponds to skarn alteration and mineralization at ELG and is fairly typical of calcic gold-skarn systems.
- Zones of coarse, massive, garnet-dominant skarn appear within and along the stock margin, with fine-grained pyroxene-dominant skarn more common at greater distances from the contact with the stock.
- Significant gold mineralization at ELG is spatially associated with the skarn, preferentially occurring in pyroxene-rich exoskarn but also hosted in garnet-rich endoskarn that has been affected by retrograde alteration, which suggests that the most important gold event is late stage, strongly related to bismuth, and of epithermal origin.
- The style of mineralization along the El Limón Deep, El Limón Sur, Sub-Sill, and El Limón West Trends is characterized by gold, with locally high silver and copper grades.
- Given that gold precipitates due to the buffer exerted by the early stage of calc-silicate alteration and sulfide mineralization, it is free and generally dissociated from the previous copper event mainly related to chalcopyrite.
