West Perth-based mineral explorer Equinox Minerals Ltd's Zambian subsidiary Lumwana Mining Company Ltd has signed a five year sale agreement for 55 per cent of its copper concentrates with a Chinese joint venture company.

West Perth-based mineral explorer Equinox Minerals Ltd's Zambian subsidiary Lumwana Mining Company Ltd has signed a five year sale agreement for 55 per cent of its copper concentrates with a Chinese joint venture company.