The China Creek alteration zone is located on the west bank of the Bulkley River, 20 kilometres southeast of Hazelton.

The area is underlain by rhyolite, rhyolitic tuff, porphyritic dacite and andesite of the Upper Cretaceous Brian Boru Formation (Kasalka Group)

A strongly clay-altered, limonitic fracture zone cutting volcanic rocks contains carbon (possibly graphite) with minor chalcopyrite, galena and sphalerite. The zone is 39 metres wide and could reflect an epithermal system. Assays of samples from the alteration zone were very low in gold and silver.