105 



vary in breadth. When cut and polished, this serpentine displays dark 

 brown parallel bands, with thin blood-red vein-like lines, running 

 through those which are red on the weathered surface. These red lines 

 are sometimes disposed after the manner of false bedding. Yery thin 

 parallel bands of asbestos are found separating the red layers, together 

 with occasional crystals of diallage; both of these, in certain lights, give 

 golden-red reflections. With the red bands, chromic iron ore is asso- 

 ciated, which is sometimes diffused in grains along the layers. Occa- 

 sionally minute faults displace the layers, and where they cross those 

 which contain chromic iron, the fissures connected with the fault are 

 filled with the ore for some distance on each side. Beds of chromic iron, 

 of two and three inches in thickness, are met with in several parts, and 

 somewhat above the well stratified serpentine, the ore occurs on the sur- 

 face in considerable quantity, in large loose angular blocks, which are 

 traceable on the strike for some distance, showing that workable masses 

 are probably imbedded in the rocks. 



Mr. Richardson's explorations during the summer of 1878 have 

 shown that this serpentine is close to important rock- masses of olivine, 

 which have undoubtedly given rise to it. Dr. Harrington made a micro- 

 scopical examination of a sample collected by Mr. Richardson, and 

 reports on it as follows : 



" It shows a few minute black grains, probably of chromite, and 

 rarely a little of a fibrous mineral which resembles enstatite." Accord- 

 ing to Dr. Harrington the olivine rock from Mount Albert is probably 

 not eruptive. 



Speaking of that part of the Notre Dame range, Dr. Ells, in the 

 Geological Survey Report for 1882-83-84, says : 



" Among the prominent features of the Shickshock range are the 

 two bare hills of serpentine, the one on the eastern extremity overlook- 

 ing the forks of the Ste. Anne River, and known as Mount Albert ; the 

 other twelve miles west, on the Salmon branch, and called by Sir Wm. 

 Logan the South Mountain. Of these the former was carefully studied 

 and is described by Mr. A. P. Low, while the latter was the only one 

 accessible to us. The latter presents a bold bluff on the south and west, 

 rising to a height of over 1,200 feet above the Salmon branch, and ex- 

 tends for about two miles and a half east. The surface, like that of 



