2 4 2 



D E S (J 11 I P T I V E l! ATA L 0 G U E 



375. Metamorphosed sandstone — colour, reddish gray; fine-grained; very com- 

 pact. Resembles the sandstones of the upper part of St. Croix River. 



376. Metamorphosed argillaceous sandstone — colour, purplish gray ; fine-grained; 

 smooth, even fracture ; contains a few siliceous nodules, surrounded with a film of 

 chlorite, spots of which are also disseminated through the rock. 



377. Brecciated conglomerate — reddish-coloured; amygdaloidal; the cells con- 

 tain a good deal of laumonite ; many of them are empty, the sides being incrustecl 

 with chlorite. The fragments and pebbles appear to have been derived from the 

 earthy beds of the sand-rock series. 



378. Metamorphosed earthy sand-rock — amygdaloidal, cells filled with decom- 

 posing laumonite ; colour, purplish red ; fracture, exceedingly irregular and rough ; 

 looks almost as rough as a fine, well-cemented breccia. The fragments of No. 377 

 were derived from beds of the same character. 



379. Similar to. No. 378 — harder; less amygdaloidal; fine granular, like No. 375. 

 Corresponds with the soft earthy beds of St. Louis River. 



380. Similar to No. 378 — amygdaloidal ; shaly ; contains numerous green spots of 

 the size of peas, probably chloritic. Resembles some specimens brought from an 

 island near Pigeon Bay. 



381. Metamorphosed shale — colour, dark gray ; contains a great deal of chlorite (?) 

 in grains and small lumps ; schistose ; roughly laminated ; rough surfaces between 

 the laminae ; fracture, lumpy ; very calcareous. Mixed, apparently, with basaltic 

 material. Like some of the beds of Kinechigakwag Creek. 



382. From a vein in No. 381 — prehnite, incrusting siliceous minerals, and in 

 reniform nodules. 



383. Basaltic rock (?) — colour, black; fine-grained; minutely crystalline; frac- 

 ture uneven ; numerous iron-stains. In some places, looks as if it had been par- 

 tially splintered, and recemented with the same material, or a more ferruginous one. 



384. Metamorphosed siliceous shale — colour, light pink, with a greenish tint, 

 caused by numerous minute grains of chlorite ( ?) ; fracture smooth, granular, dis- 

 posed to be conchoidal. Weathers with a smooth surface. 



385. From a vein — prehnite, massive, and in botryoidal incrustations; some 

 laumonite ; malachite and black oxide of copper in small cavities. 



386. 387. Metamorphosed siliceous and siliceo-argillaceous shales, alternating — 

 colour, dark brownish red to bright red ; very hard and compact ; fine-grained ; 

 smooth, conchoidal fracture ; porphyritic, with small crystals of flesh-coloured fels- 

 par ; slightly amygdaloidal, the cells containing minute quartz crystals, and a few 

 crystals of a mineral supposed to be chlorite (?) . 



388. Earthy amygdaloid — colour, dirty red ; very cellular ; most of the cells are 

 empty, but some of them contain laumonite ; the cells are compressed vertically, as 

 though the beds had been subjected to heavy pressure before the rock was solidi- 

 fied. This crushing in of the cells has given a brecciated appearance to the beds, 

 and this may have been the case with some of the brecciated beds at other places. 

 The rock is very earthy, and appears to have been a mud bed, more or less meta- 

 morphosed at different places. The fracture is exceedingly rough and hackly. Its 



