Operations / Geology

Geology Au-Cu-Mo Porphyry

The Prolific Mining Henry Mountains Utah Deposit Consists Of Two Deposit Types: A Structure Hosted Gold System That Is Adjacent To And Overlies A Maricunga-Style Porphyry Gold System Similar To That Found In The Maricunga Gold Porphyry Belt In Northern Chile. The Maricunga Gold Porphyry Belt Hosts Known Resources Of More Than 100 Million Ounces Of Gold, 450 Million Ounces Of Silver And 1.3 Billion Pounds Of Copper.


Mineralization across the Prolific Mining Henry Mountains Utah Deposit occurs as stockworks, veins and surface structures. The stockwork is found both on the surface in outcrop and in diamond cores. The stockwork consists of networks of banded quartz and quartz-sulphide veinlets. The banded stockwork veinlets consist of either magnetite or dark quartz (inclusion rich) forming along boundaries or as discrete bands in quartz veins. The larger veins found in outcrop and within drill core are primarily steeply north trending parallel banded A-type banded quartz veins ranging in width from 1.0 to 10 cm. There are also B-type veins hosting sulphides (pyrite-chalcopyrite-bornite-molybdenite) in a central vein suture.

Porphyry Mineralization

The porphyry mineralization is defined where sulphide and oxide mineralization are present as disseminated grains and accumulations in altered rock and in localized networks of fracture-controlled quartz veins (A-type and B-type) +/- magnetite pyrite veins (M-type). Various types of hydrothermal alteration and mineralization are genetically related to magma reservoirs, predominantly felsic to intermediate in composition. The currently explored portion of the Henry Mountains porphyry deposit shares many similarities to the Maricunga Gold Porphyry Belt. The veins found across the Deposit and in the core are consistent with other gold porphyry systems, namely a sequence of M-type veins, banded quartz A-type veins and sulphide bearing A and B-type veins.