Arcturus is situated (in the Enterprise belt) in the southern limb of the Harare Greenstone Belt. Orebodies generally comprise individual lenses which range from 0.2 m to 5.0 m in width and dip from 55° to 70°.

The Arcturus gold mine, located within the Shamvaian Group, is hosted in the Iron Mask Formation, which comprises a succession of metamorphosed felsic volcanics and associated metasediments including prominent bands of sulphide-facies iron formation, phyllites, meta-arenites, and quartzose schists (Oberthur et al., 2000). The mineralized shear zones in the Arcturus mine are characterized by silicification, biotite, and K-feldspar alteration. Gold mineralization is associated with pyrrhotite, arsenopyrite, and also occurs as free gold, which contributed up to 10% of production.

There are 6 major reefs at Arcturus: Venus, Arcturus, West, Slate, Saturn, Planet.
Venus.
- Ore bodies are irregularly – shaped, discontinuous and lenticular.
- Reefs comprise well banded to laminated siliceous lithologies that consist of millimetre to centimetre units of pink-brown, cherty layers of k-feldspar-quartz-biotite-arsenopyrite which alternate with amphibole – diopside – epidote – plagioclase units containing pyrrhotite and pyrite.
- Pyrrhotite and arsenopyrite are the dominant sulphides.
- Free gold is rare.
- The reefs are arranged in an en echelon array in the alteration zone.
- The ore bodies trend south-easterly and dip at 55 - 70 degrees to the north-east.
- The payshoots show variable pitch towards the west.
- Ore body widths vary from less than a metre to 30 metres.

Venus – Dolerite Dyke.
* The dolerite dyke (25 – 40m thick) dipping 60 degrees SW exists around 2 – 3 level.
* Ore bodies above the dyke were mined from surface.
* The intrusion of the dyke resulted in a reverse movement which subsequently resulted in a vertical displacement of 80 – 90m.

The current hoisting capacity is 15 ktpm. The average mined grade is 4.2g/t Au.

Ore is processed through conventional crushing, milling, gravity recovery and a combination of carbon-in-solution and -pulp processes.

The current milling capacity is 15 ktpm.