Yinzishan Mine is a volcanogenic massive sulphide deposit, located some 500km South - South-West of Kunming, the capital city of Yunnan Province in southwest China and 76km from Simao, the closest city with an airport. Regent owns 90.5% of the project and the surrounding 57km² exploration areas and one mining licence covering 1km².

The licences are in proximity to the Dapingzhang Mine, a 2,500 tonne per day copper/zinc open pit mine, operated by Yunnan Simao Shanshui Copper Company Limited, the Group's first Sino-foreign equity joint venture, in which it owns a 40% stake.

Simao Regent's licences overlay the same types and ages of volcanic rocks which host the volcanogenic massive sulphide mineralisation at Dapingzhang. The previous owner of the small Yinzishan underground mine was mining volcanogenic copper-rich stringer-type and processing it in a nearby 100 tonne per day mill.

The Yinzishan Mine project is located within 100 metres of a paved highway that is 76km from Simao that is linked to the national highway network. Power and water are available in the immediate vicinity.