00000nam 2200000za 4500 9.841390 CaOODSP 20221107152057 cr ||||||||||| 170810s1970 oncd ob f000 0 eng d CaOODSP eng eng fre n-cn--- M34-20/123E-PDF M34-20/123 Machacek, H. Quantitative x-ray determination of quartz and pyrite in dusts [electronic resource] / H. Machacek, Mineral Sciences Division. Ottawa : Queen's Printer, 1970. iv, 18 p. : charts Technical bulletin ; TB 123 Cover title. "January 1970." Digitized edition from print [produced by Natural Resources Canada]. Includes bibliographical references. “This investigation concerns the quantitative direct X-ray determination of quartz and pyrite in airborne mine dusts. A new technique developed by Leroux and Powers has been successfully applied and some new details have been found. The method provides reproducible analyses of quartz and pyrite in dust samples. When the calibration curves of the pure components have been made and certain sources of error are kept within appropriate limits, quartz and pyrite can be determined down to 30 μg/cm2 when deposited on appropriate filters"--Abstract, p. i. Includes abstract in French. gccst Minerals gccst Analysis Canada. Natural Resources Canada. Canada. Mines Branch. Technical bulletin (Canada. Dept. of Energy, Mines and Resources. Mines Branch) TB 123 (CaOODSP)9.834857 PDF 1.24 MB https://publications.gc.ca/collections/collection_2017/rncan-nrcan/M34-20/M34-20-123-eng.pdf 300008