Abstract

The main ore body consists of an irregular lenticular mass of disseminated magnetite with intermixed hematite, surrounded by a zone of calc-silicate hornfels containing these and other iron minerals, particularly chondrodite, at the contact between the upper Cretaceous Hong Kong granite and middle Jurassic (Repulse Bay) volcanic rocks. The composition and paragenetic sequence of the skarn mineral assemblage is outlined, and it is concluded that the deposit is of contact pyrometasomatic origin and Paleocene to Eocene in age.

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