83 the magnetite to near its southeast end, where a porphyritic rock outcrops which seems to grade into normal diorite. At the southeast end and for a few feet away down hill are exposures of dark, dense, greenish rocks and garnetite. The northeast edge is concealed by waste rock from the quarry in the ore. Along the slope of the hill and uphill, the rocks exposed are mainly diorite. Apparently the ore-body occurs partly within a narrow band, only a few yards wide, of much altered limestone (now garnetite) and perhaps other sediments and volcanics, enclosed in diorite which grades into a porphyritic rock at its contact with the sediments. The ore mass seems to extend diagonally across the width of the sedimentary band, so that at both ends it is in contact with diorite. Scale of feet SEE es ie Geological Survey, Careda Seas sei ae lo a Memes cere eee ite alae, by eeio The magnetite varies from finely granular, almost dense, to rather coarse, with individual grains measuring one-sixteenth of an inch and more in diameter. Near the walls of the ore-body, the magnetite is much ad- mixed with various silicates, but the boundary between ore and country rock is very sharp. Towards the centre of the magnetite mass the silicates markedly decrease in amount. No sulphides were observed. Uphill from the southern termination of the main ore-body and distant about 50 fect, is a body of magnetite seemingly not less than 20 fect long and at the widest part not less than 10 feet broad. This mag- netite body is almost entirely concealed ben sath moss and vegetation and possibly has never been cl raned off. It is apparently surrounded by the porphyritic phase of the diorite. This occurrence may constitute the second ore-body referred to in some of the earlier descriptions of the locality. eee |