336 GEOLOGICAL NOTES — HONEYMAN. 



Arisaig " Archaean," or the Archaean of Cape Breton, the Cobe- 

 quid Mountains, &c. 



2. — Magnetitic. 



Through William Ross, Esq., Collector of Customs, Halifax, I 

 have received a specimen of magnetitic sand from Cape Breton. 

 Of 100 grains, the magnet separated 15. The remainder largely 

 consists of garnets and amethyst (?), and possibly titanite ; gold 

 is wanting. It is possibly derived from the Archaean crystal- 

 tine rocks of Coxheath. The locality where it is found being 

 Ball's Creek. It is said to be in considerable quantity. I have 

 not yet seen any garnets in the rocks of this series, either in 

 Nova Scotia or Cape Breton. Magnetite is found. Paper " Archae- 

 an Gneisses of the Cobequid Magnetitic, 1880-1." 

 3. — Magnetitic. 



I am indebted to S. D. Macdonald, F. G. S., for the specimen 

 which I am now to describe. It is from Cape Hosier, P. Q. Its 

 weight is 65 grains. Of this, about 10 grains are taken up by 

 the magnet. The remainder consists chiefly of garnets and 

 amethystine grains. It is very like the Cape Breton specimen. 

 Boulders were collected in the same locality. These are of gran- 

 itic and syenitic gneisses. In the one garnets are seen, and 

 in the other grains of magnetite. So that the rocks that fur- 

 nished these boulders, in all probability, are the sources of the 

 sand of our specimen. It is therefore of Archaean (Huronian) 

 origin, like the Cape Breton magnetic sand. 



4. — Magnetitic. 



There is yet another specimen in the Museum collection to 

 which I would refer. It is several years since I received it. It 

 was brought for the purpose of getting my opinion of its value. 

 Its mineral constituents are the same as of the three last de- 

 scribed, but it far excels these in the proportion of magnetite. 

 It covers the magnet very readily. I think that this was the 

 reason why I did not receive definite information regarding its 

 locality. If the locality is not in Newfoundland, it is in some 

 part of the Labrador coast. There is a piece of magnetite in the 

 specimen. It is doubtless of Archasan origin. 



