IRON ORES OF CENTRAL ONTARIO. 



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The intermixed rock-matter is esseiitially pyroxeuic, with very little tree silica, aud there 

 is no trace of titanium in the ore. The deposit is known as the Baker or Horse-shoe 

 Mine. 



II. — TiTANIFEROUS MaONETITES. 



No. 1. A black, granular, strongly magnetic ore, from lot 11, concession 1, township 

 of Minden. Specific gravity, 4.336. Other samples, from lots 10, 12, 13 aud 15 in the 

 same concession, were found to contain large amounts of titanium, and also a good deal 

 of intermixed micaceous rock-matter. All were taken from natural exposures aud 

 shallow trial-pits, indicating, apparently, stock-formed masses of considerable extent. In 

 estimating the titanium, in the analysis of titauiferous ores, as TiO', an excess in the 

 sum total of the analysis is always obtained ; but this disappears if the amount of TiO"- 

 be reduced by calculation to Ti"0'. 



No. 2. A black, strongly magnetic ore, from an enormous deposit on lot 35, concession 

 4, township of Glamorgan, about half-a-mile south of Burnt River. The deposit rises 

 abruptly in the form of a succession of ledges to a height of from 80 to 100 feet above the 

 general level of the ground, and it is exposed in an easterly and westerly direction over a 

 length of at least 1,800 feet, with an average width of 140 feet. It is evidently a stock- 

 formed mass. (See Transactions Roy. Soe. Canada, 1884, page 159). The analyzed sample 

 held 5204 percent, metallic iron, and 8 11 per cent, titanium. A small amount of CaCO' 

 (=086 p. c.) was also found in the ore. 



No. 3. This ore is very similar in character and conditions of occurrence to No. 2, 

 although separated from the latter by a distance of at least twenty-five or thirty miles. It 

 occurs in the township of Tudor, on lots 55-57 of the Free Grant District, where it is ex- 

 posed along- the face of a steep slope, and over a wide extent of ground. (See description 

 in the Transactions Roy. Soc. Canada for 1884, page 160.) In order to test the depth of the 

 deposit, and especially to settle the disputed point as to whether the presence of titanium, 

 in ores of this kind, may not disappear in lower portions of the mass, the owners of the 

 property have lately taken out some solid cores of ore by a diamond drill from a depth 

 of "70 feet from the surface, without reaching the base of the deposit. A portion of one 

 of these cores, examined by the writer, yielded 1086 per cent. TiO'. It may be concluded 

 therefore, that in these titauiferous ores the titanium will be found to pervade the entire 

 mass of the deposit. The amount in the present case was somewhat greater at this depth 

 of TO feet, than in samples taken from shallow depths, in cousequeuce of a diminished 

 percentage of rock-matter. The presence of these titauiferous masses in close proximity 



