GEOLOGY, ALTERATION, AND MINERALIZATION OF THE. EL ALACRAN AREA, NORTHERN SONORA, MEXICO by. Darrel Allen Dean
It is a master´s thesis on the porphyry copper deposit that occurs on Azure's Alacran tenament. You can download the thesis from the University of Arizona library. It has maps and even drill assays from the first round of drilling back in the 1970´s. So, besides the gold and silver, we also have a significant copper resource at Alacran. Not sure how much, but it is likely leachable and near surface according to the drill logs.
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