Fifteen quartz petrofabric diagrams were made from nine specimens of Grenville type granulites. The majority of the specimens, which are granitic, posses B-B' - tectonite fabrics comparable to those of other granulite areas. An important feature brought out by the diagrams is the lack of correspondance between the megascopic fabric axes, determined by lineation and foliation, and the fabric axes determined by the quartz diagrams. This discrepancy may be interpreted as an indication of a change in the direction of tectonic transport, during deformation, from N 50 to N 80 E.

The Grey River Area lies on the south coast of Newfoundland. In general, it includes the land between Grey River and Baie de Vieux, lat. 47°40' - 47°50', long. 57°00’ - 57°15'. The area may be reached by steamer, which runs weekly between Port aux Basques and Argentia. The nearest major settlement is Burgeo, 24 miles west along the coast; Ramea, a minor fishing port lies 12 miles southwest on Ramea Island. The Grey River area is 87 miles due south of Buchans. It is accessible from the air, and both Grey River and Long Pond have adequate facilities for landing small sea planes.

Although the special study of the present work is an experimental investigation or the mineralogy, mode and conditions of formation of the hydrous nickel-magnesium silicates, often collectively referred to as garnierite, that characterize all nickel silicate deposits, it is felt that a brief description of the broader features and field relationships of the better-known nickel silicate deposits of the world would be an appropriate introduction to this subject.

In recent years valuable contributions have been made to the study of hydrothermal wall rock alteration associated with ore deposits in a number of districts. ( Review of previous work on pp 152-194). A more complete understanding and correlation of wall rock alteration trends can be accomplished only by undertaking detailed chemical and mineralogical studies in various types of deposits from as many mining districts as possible.

Metadiabase sills constitute up to 27 percent of a steeply-dipping assemblage of ancient volcanic rocks in Roy and McKenzie townships, Chibougamau region, northwest Quebec. Three rock types are represented. They are, from lower to upper parts of the sills, metapyroxenite, metadiabase, and diabase-pegmatite. Comparison is made with “metadiorite” and “metagabbro” sills in an adjoining area. Chemical and planimetric analyses show that layering of the sills is the result of magmatic differentiation which is characterized by iron-enrichment. The metadiabase sills are similar to the intrusive phase of plateau-type basaltic magma in chemical composition and in trend of differentiation.

Specimens of stilbite, heulandite, mordenite, chabazite and gmelinite were chemically analysed and their chemical compositions correlated with their optical properties. Thirty specimens were analysed chemically using a rapid method of silicate analysis. The elements silicon, aluminum, potassium, calcium, strontium, barium and iron were determined quantitatively by x-ray fluorescence and sodium was determined by flame photometry. [...]

Massive and disseminated sulphides occur at Kennco Clearwater deposit and the Caribou Ore Body. The geological setting and mineralogy of the Kennco Clearwater deposit were studied in the field and in thin and polished sections, and wall rock alteration of both deposits was studied by X-ray diffraction.

This thesis presents a structural, mineralogical and alteration study of the Henderson copper orebodies, located in the Chibougamau region of Quebec. The orebodies were discovered early in 1956 as the result of drilling two holes on an electromagnetic anomaly. Approximately 90,000 feet of drilling in 1957 outlined some 4,750,000 tons of ore with an average grade of 2.01% copper, 0.057 ounces of gold per ton and with small amounts of nickel and cobalt. A road and causeway have been constructed to the site and shaft sinking is now in progress.

Note: Missing page 28. / In spite of the many studies of the various Paleozoic systems in the Rocky Mountains, no one has dealt satisfactorily with the beds immediately below the known Upper Devonian strata. Several factors are involved. The beds are not so resistant as those above and they are usually found at the base of fault blocks. Thus the sections are talus covered and incomplete due to faulting. Fossils are rare and there is no adequate means of correlation between widely spaced sections.

The term “semi-microfossils”, here proposed for the first time in palaeontology, refers to those fossils which, though easily recognized by the naked eye, depend upon microscopic examination for at least their specific identification. Included in this group are (i) Bryozoans, (ii) Scolecodonts, (iii) Conodonts, and (iv) Ostraoods. Of these, the bryozoans and scolecodonts have been selected for detailed study owing to their abundance in the Black River and Trenton formations in the Province of Quebec.