File:Canadian mining journal January-June 1905 (1905) (14782130082).jpg

Identifier: canminingjjanjun1905donm (find matches)
Title: Canadian mining journal January-June 1905
Year: 1905 (1900s)
Authors:
Subjects: Mines and mineral resources
Publisher: (Don Mills, Ont., Southam Business Communications)
Contributing Library: Fisher - University of Toronto
Digitizing Sponsor: University of Toronto

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ears as if hereoffers itself an extensive field for study and research work.Mr. Obalski in a paper read before the Canadian Mining Insti-tute at the Toronto meeting in March, 1904, pointed out thathe had found a mineral which he identified as cleveite andwhich, on further investigation, showed to contain 70.71 percent, uranium oxide, while its radio activity was pronouncedto be very strong. Prof. Rutherford, of McGill University,made an analysis of this sample and discovered that it con-tained one-tenth of a milligram of radium. This makes it been analyzed by the United States Geological Survey andcontained the following: Oxide of uranium 37.7 per cent. Oxide of yttrium 2.57 per cent. Oxide of cerium and thorium., .. 6.81 per cent. Whether this mineral contains radium has not been determin-ed yet, but as the composition is similar to that found inCharlevoix and since the uranium earths are recognized asbearing generally radium, there is a strong possibility thatsuch might be the case.
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Another View of the Quarries. (See page 126.) comparable with the best pitchblende so far tested for the pro-duction of radium. The pegmatite dike from which thismineral was taken is about 18 miles back from Murray Bay inthe County of Charlevoix on the north shore of the St. Law-rence River. The Villeneuve mine, at one time famous for its productionof an excellent quality of white transparent mica, and situatedin the north of Buckingham in the County of Ottawa is an-other example for the occurrence of rare minerals. The micaoccurs here in a dike of pegmatite composed largely of cleanwhite feldspar and quartz, in a width of about 150 feet, cuttingnearly along the strike of a reddish and grey quartzose gneissformation. A sample of uranite taken from this mine has The distribution of pegmatite dikes in Canada is very largeand if investigations in the direction as above indicated weremade, there is no question that many a deposit now lying dor-mant, may be found to contain these rarer min

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