MINEEALS OCOUEliING IN CANADA. 95 



cleavablc masses, in pegmatite veius cutting Laureutiau strata, iu the township of 

 North Burgess, Lanark county, province of Ontario. 



195. Petalite — Is here mentioned among the minerals of Canada, upon the authority of 

 Dr. Bigsby, according to whom this mineral was found, with tremolite, in a large 

 boulder on the lake shore, at Toronto, York county, province of Ontario. 



lOo. Petroleum — ^The most importnnt oil springs arc in tJic township of Euniskillcn, in 

 the western peninsula of Ontario, but it also occurs in other townships of this section 

 of the country, as for instance those of Mosa, Oxford and Dereham. It is found, iu 

 small quantity, on Great Mauitoulin Island iu Lake Huron, proA'ince of Ontario — 

 also on the St. John River, and on a branch of Silver Brook, and other localities iu the 

 county of Gaspé, province of Quebec 



1!I7. PHLOGoriTE — This mineral is of very common occurreni:e among the crystalline 

 limestones of the Laurentian system, through which it is sometimes more or less 

 abundantly disseminated iu the form of small scales or crystals. The largest speci- 

 mens are generally found in beds near to bauds of quartzite or pyroxenic gneiss, 

 which often limit the crystalline limestones, or are interstratified with them. It is 

 also met with imbedded in massive pyroxene rock. Large plates are obtainable iu 

 the townships of Grenville (Argenteuil Co.), Buckingham, Templeton, etc. (Ottawa 

 Co.), iu the province of Quebec — and in the townships of North and South Burgess, 

 in the province of Ontario. Anal., T. S. Hunt, Geol. Can., 1863, p. 495. 



198. PiCKERiNGiTE — Occurs as an etllorescence ou the shale of a sheltered cliff on the 

 banks of the Meander, Newport, Hants county, province of Nova Scotia. Anal., H. 

 How, .Tourn. Chem. Soc, new series, vol. i, p. 200, 1863. 



199. PlCROLlTE — This variety of serpentine is met with in the townships of Bolton 

 (Brome Co.), Shipton (Richmond Co.), etc , in the province of Quebec. Anal., T. S. 

 Hunt, Geol. Can., 1863, p. 472. 



200. PiTCHSTONE — A pitchstone-porphyry, and pitchstoue with veins of agate, occurs on 

 the eastern extremity of Michipicoten Island, Lake Superior, province of Ontario. 



201. Pi.ATiNtTM. Native, — The earliest reference to the finding of native platinum iu Can- 

 ada, is that by Dr. T. Sterry Hunt (Rep. Geol. Can., 18r,l-52, p. 120), who mentions 

 having observed it, iu association with iridosmine, in the gold washings of the 

 Rivière du Loup and Rivière des Plantes, Beauce county, in the province of Quebec. 

 It has since been met with, according to Dr. G. M. Dawson (Ann. Rep. Geol. Can., 

 vol. iii, 188*7, Part R), in association with placer gold in several localities in the pro- 

 vince of British Columbia — occurring in notable quantity in the region of the Upper 

 Similkameen and Tulameen Rivers, in minute scales where the gold is " fine " but 

 increasing iu coarseness to small pellets and nuggets in places where " coarse " gold 

 is found. Coarse grains and pellets have, so far, been found only on Granite, Cedar 

 and Slate Creeks, all entering the Tulameen on the south side. He also mentions its 

 occurrence, iu fine scales with gold, on Tranquille River, Kamloops Lake ; at a place 

 ten miles below Lillooet on the Fraser River, and iu nearly all the tributaries of the 

 Yukon River which have been worked. Analyses, G. C. Hotfmaun, Trans. Roy. Soc. 

 Can , vol. v, sec. iii, p. 17, 1887 — and an abridged statement of results, Ann. Rep. 

 Geol. Can., vol. ii, p. 5 t, 1886. 



202. PoLYDYMlTE — What is regarded as evidently a ferriferous variety of this mineral is 



