Transactions . material, no attempt has been made in thepast to keep the two fire clay beds separate, but this .should bedone, unless it is kno^vn that they are alike. The need of care inmining is well shown by our own tests. (1722). The first of these was made on an average sample of seventyfive pounds collected from the stockpile at the brick works, andsaid to represent the run of the mine. The china clay (1721) is a fine-grained whitish shale, some-times soft and smooth, at other times hard and porcelain-like, witha conchoidal fracture. It grades upwards into an shale.
Transactions . material, no attempt has been made in thepast to keep the two fire clay beds separate, but this .should bedone, unless it is kno^vn that they are alike. The need of care inmining is well shown by our own tests. (1722). The first of these was made on an average sample of seventyfive pounds collected from the stockpile at the brick works, andsaid to represent the run of the mine. The china clay (1721) is a fine-grained whitish shale, some-times soft and smooth, at other times hard and porcelain-like, witha conchoidal fracture. It grades upwards into an shale. There are numerous small limonite spots scatteredthrough it. Kilgard.—A series of shales simihir to seen east ofChiybum, are on the side of Sumas Mountain,on the property of Messrs. Maclure. On this side of the mountainthe land steeply from the prairie to the summit of the mount-ain, being interrupted by two benches (Fig. 3). i/i* *t»t^ frtj JAa^ l^ <««. Lm^ 10 / - J4. **m0m f^ **»4» tf—t /«* «w /; ilu. 3--Section of shale beds in SumAA MountAin. 392 Clay and Shale Deposits—Hies. The best series of exposure is in the s. w. J, sec. 29, twp. 19,in a steep ravine, which is crossed by a waggon-road bridge. Asection up the south face of the mountain, along the line of thisstixwm, is given in Fig. 3, and is compiled from data supplied byMr. J. C. Maclure who made the survey. This section shows a series of shales and sandstones similarto that found to the north, on the property of the ClayburnCompany, Ltd., and from what can be told from the limitedexposures along the creek, the dip may be south-west. Theshales in this section present considerable variety and include fireclays, sewer pipe and paving brick clays, and red and buff burningshales adapted to the manufacture of pressed brick. The tests of these are given in the table (See Nos., 1725, 172G,1727, 1729, 1737, 1738, 1739, 1740). Surface Clays. Vancouver and vicinity.—Sur
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Keywords: ., book, bookcentury1800, booksubjectmineralindustries, bookyear1895
