The GAM occurrence is located on Granite Creek approximately 1 kilometre upstream from its mouth and several hundred metres north from the Manson Creek road.

This occurrence is only made reference to in Geological Survey of Canada Open Papers 41-5 and 42-2, where it is described as a quartz vein containing pyrite with low gold and silver values. Very little else is known about it. It is situated in the upper parts of the Proterozoic Ingenika Group (Stelkuz Formation) and is found in close proximity to the Manson fault zone, a Cretaceous to Tertiary right-lateral, northwest-striking fault.

In 2019, American Manganese Inc. conducted a 7.05 line-kilometre magnetometer geophysics survey over the Lonnie Property along with 125 soil samples and 39 rock chip samples. Soil sampling outlined a well-defined zone of elevated cerium, lanthanum, niobium, neodymium, praseodymium and yttrium.