In this case it’s the name of a gold discovery in western Mexico‘s Sinaloa state, by McEwen Mining (TSX: MUX), on its El Gallo property where it operates the open-pit El Gallo gold mine. Twin Domes yielded a trio of strong gold-mineralized intercepts for McEwen. It’s high grade stuff, very near surface, with limited drilling to date yet to crack below 50 metres.
The best of the batch were narrow high grade hits within broader intercepts including 2 metres @ 112.9 g/t gold and 1 metre @ 37.2 g/t Au. These higher grades were important components of wider intercepts, respectively showing 13 metres @ 20.9 g/t Au and 5 metres @ 9.8 g/t gold.
The gold mineralization is highly variable, as is apparent from McEwen Mining’s overview of drilling results. Of the eight drillholes it reported, five did not report significant results. All eight were within a couple hundred metres of each other as can be seen below in the plan view of the drillholes.
Ian Ball, McEwen Mining senior vice president, said in a phone interview that the variability shows the ore-shoot like nature of the clearly very high-grade gold mineralization. You move in and out of it quickly.