Iron Hill carbonatite

摘要

The Iron Hill carbonatite complex is a 31km~2 alkalic intrusion at Powderhorn, approximately 35km south-south/west of Gunnison, Colorado, USA. Originally explored for its iron deposits, Iron Hill is now coveted for its vast reserves of titanium, estimated to be half of the USA's usable total. Teck Comico Ltd, Vancouver based precious metals and minerals miners, has had 100 percent ownership of the complex since 1994. The primary rock types Iron Hill are pyroxenite, uncompahgrite, ijolite, nepheline syenite and carbonatite. These bodies of rock intruded into the region approx 570 Ma into Early Proterozoic granite and syenite and older Proterozoic metamorphic rocks.