GEOLOGY OF THE HAILE GOLD MINE, LANCASTER COUNTY, SC
The project area is underlain by an asymmetric, shallowly northeast plunging antiform with a moderately dipping northwest limb and a steeply dipping southeast limb. Preliminary zircon ages indicate that the Persimmon Fork is older than the underlying Richtex, suggesting that a tightly folded anticline has been overturned in order to create the current configuration.
The gold mineralization at Haile is hosted within the sediments near the contact with the volcanics. The gold zones consist of stratabound silicified and hydrothermally brecciated sediments that vary from one meter to over 100 meters in thickness, with varying orientations. Microcline is sometimes present where silicification is most intense. Kaolinite is common at the surface, decreases in abundance with depth and is thought to be related to weathering. The gold mineralization generally occurs as microscopic native gold, electrum and gold tellurides, which are associated with pyrite, pyrrhotite and molybdenite.
Several models have been proposed for the ore genesis at Haile and vary from sedimentary exhalative to orogenic. Brecciation and silicification of the sediments indicate that gold mineralization occurred post deposition. The presence of pressure shadows around pyrite grains and folding of sulfide veins demonstrate that deformation occurred post mineralization. We believe that Haile is a rare instance of a preserved Late Proterozoic epithermal gold deposit.