Ada Tepe is classified as a low sulphidation epithermal gold-silver deposit. The mineralization is hosted near the base of a relatively young sequence of (Paleogene) sedimentary rocks that range from breccias and conglomerates to marls. These rocks are separated from the lower and older metamorphic basement rocks (known as the Kessebir-Kardamos core complex) by a shallow fault, frequently referred to as a detachment fault, that dips about 15° to the north. This fault forms the lower bounding surface of the deposit.

The mineralization at Ada Tepe is divided into two types. Wall Zone mineralization forms a massive siliceous body up to five metres in thickness that lies immediately above the detachment fault. The ‘Upper Zone’ mineralization is a series of predominantly steeply dipping east-west trending veins that extend upwards from the Wall Zone into the sedimentary rocks.

Gold is present as electrum and the highest gold grades are associated with typical epithermal veins with colloform-banded and lattice-bladed veins and hydrothermal breccias.

The surrounding prospects, referred to as satellite orebodies, include Surnak, Skalak, Synap, Kuklitsa and Kupel (see map). At the Surnak prospect, located about three kilometres west of Ada Tepe, gold-silver mineralization occurs along a north-striking sub-vertical contact between the sedimentary and metamorphic rocks that is interpreted as a feeder structure. The mineralization is associated with sulphide-rich silica and carbonate-altered hydrothermal breccias that extend into both the underlying metamorphic basement rocks and the overlying sediments.