000 02193cam  2200337za 4500
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008170811s1971    oncd    ob   f000 0 eng d
040 |aCaOODSP|beng
041 |aeng|bfre
043 |an-cn---
0861 |aM34-20/139E-PDF|zM34-20/139
24500|aMolybdenum ore, PR-1 |h[electronic resource] : |bits characterization and preparation for use as a standard reference material / |cthe staff of the Mineral Sciences Division.
260 |aOttawa : |bInformation Canada, |c1971.
300 |av, 47 p. : |bcharts
4901 |aTechnical bulletin ; |vTB 139
500 |aCover title.
500 |a"August, 1971."
500 |aDigitized edition from print [produced by Natural Resources Canada].
504 |aIncludes bibliographical references.
520 |a“To fulfil a need of Canadian industrial and commercial laboratories, the Mines Branch of the Department of Energy, Mines and Resources has undertaken a program to produce a number of standard reference ores of metallic minerals. This report describes the characterization of molybdenum ore, PR-1, and its preparation for use as a standard reference material. The mineralogical, geological and chemical characteristics of PR-1 are given as well as the details of the methods used for its comminution and blending and for assessing its homogeneity. Nineteen laboratories participated in the program by providing analytical results for molybdenum, bismuth, iron and sulphur. All these results and the evaluation of their statistical parameters are reported for each of the four elements. Recommended values of the means and their confidence limits are given"--Synopsis, p. i.
546 |aIncludes synopsis in French.
69207|2gccst|aMetals
69207|2gccst|aMinerals
69207|2gccst|aStandards
7101 |aCanada. |bNatural Resources Canada.
7101 |aCanada. |bMines Branch.
830#0|aTechnical bulletin (Canada. Dept. of Energy, Mines and Resources. Mines Branch)|vTB 139|w(CaOODSP)9.834857
85640|qPDF|s3.93 MB|uhttps://publications.gc.ca/collections/collection_2017/rncan-nrcan/M34-20/M34-20-139-eng.pdf