MINEEALS OCCUREING IN CANADA. 71 



Co.). Agates arc found iu abundance in the amygdaloids of Lake Superior, and 

 sometimes of considerable size and beauty. They abound in rolled masses on the 

 beaches of Michipicoten and St. Ignace Islands, at Thunder Bay and elsewhere along 

 the shore of this lake — jirovince of Ontario. 



6. Alabaster — Considerable masses of a very beautiful snow-white gypsum or alabaster 

 are met with iu the gypsum quarries of Hillsborough (Albert Co.), iu the province 

 of New Brunswick. 



'7. Albertite — This beaiitiful mineral has, so far, only been met with in King's, Albert 

 and "Westmoreland counties — the most important locality being in the parish of 

 Hillsborough (Albert Co.) — iu the province of New Brunswick. It is not found in 

 beds, but iu true cutting veins, which, although at times coincident with the 

 bedding, are as often oblique or at right angles to it. The chief deposits, those of 

 the Albert mines (in Hillsborough), occur iu highly bituminous and oil-bearing 

 shales situated near or at the base of the Lower Carboniferous ; but, at points not 

 widely separated, veins of the mineral are found penetrating, for short distances, the 

 underlying metamorphic rocks — supposed to be of Huroniau age — and the overlying 

 and little disturbed beds of the Millstone grit. The maximum thickness of the vein 

 as first found near the surface was twenty-two feet, that of the smaller veins only a 

 few inches, while the veinlets were often not thicker than a sheet of paper. It is 

 estimated that since its first discovery (by John Duffy in 1849) some 200,000 tons of 

 this material have been raised at the Albert mines. The deposit has, however, now 

 become practically exhausted, and the mine in consequence abandoned. (From 

 information communicated by Prof L. W. Bailey, of the University of New 

 Brunswick.) 



8. Albite— Large cleavable masses of white albite, with quartz and mica, constitute a 



granite found at the Lake of Throe Mountains, on the River Rouge, in the township 

 of Clyde (Ottawa Co.), and a faintly greyish-white almost white albite, exhibiting a 

 fine bluish opalescence, occurs in large fragments in a coarse pegmatite vein — 

 composed of quartz, miiscovite, microcliue, with occasionally black tourmaline, 

 garnet, etc. — cutting a greyish garnetiferous gneiss iu the township of Villeneuve, 

 also in Ottawa county, province of Quebec. See also note to " Peristerite." 



9. Allanite — Small crystals of this mineral were found, by Dr. T. S. Hunt, in a lel- 



spathic rock near Bay St. Paul (Charlevoix Co.), and in a rock composed of labrador- 

 ite and hypersthene from Lake St. John (Chicoutimi Co.), province of Quebec. 

 Also occurs (Prof E. J. Chapman, Can. Journ., new series, vol. ix, p. 103, 1864), in 

 the form of a narrow vein in granitoid strata at Hollow Lake, the head waters of the 

 South Muskoka, iu the province of Ontario. 



10. Almandite — The red garnet from the Stickeen and Skeena Rivers, as also many of 



the other red varieties alluded to under "G-arnet," will, most probably, be found to 

 be referable to this variety. 



11. Alunite — A massive, fine granular, light reddish colored alunite, has been met with 

 — associ ited with a greyish translucent quartz and specular iron — at New Ireland 

 Road, parish of Alma (Albert Co.), in the province of New Brunswick. 



12. Alunogen — Has been found, in the form of a crust of from 5 to 5| cm. thick, on 



