文章基本信息

标题：Effect of Organic Matter on the Color of Sphalerite from the Silesia-Cracow Lead-Zinc Deposits, Poland
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作者：Maciej Rybicki
期刊名称：Contemporary Trends in Geoscience
电子版ISSN：2299-8179
出版年度：2012
卷号：1
期号：1
页码：57
DOI：10.2478/ctg-2012-0008
出版社：De Gruyter Open
摘要：Using gas chromatography-mass spectrometry (GC-MS) sphalerite samples from lead and zinc mines of theSilesian-Cracow region were studied in terms of the effect of organic matter on their coloration. The results indicate nocorrelation between the abundance and chemical composition of organic matter and sphalerite coloration. TOC valuesfor investigated samples are in the range of 0.5-1.28%. A basic feature characterizing all samples is very similar distributionof n-alkanes, with a predominance of short-chain n-alkanes (from n-C13 to n-C21) over long-chain n-alkanes(from n-C25 to n-C35). Among the isoprenoids pristane dominates over phytane (Pr/Ph ratio in one sample is even 8.95),which does not correspond to previous studies (Karwowski et al. 2001) and may be due to the multi-source nature oforganic matter present in sphalerite inclusions from the Silesian-Cracow Zn-Pb deposits. The occurrence of hopaneswith 17β,21β(H) stereochemistry indicates a low maturity of test samples.
关键词：organic matter; color of the sphalerite; Silesia-Cracow Zn-Pb depostis; GC-MS methods