Hartite from Bilina

Other| December 01, 1998 Hartite from Bilina Vladimir Bouska; Vladimir Bouska Charles University, Faculty of Science, Prague, Czech Republic Search for other works by this author on: GSW Google Scholar Ivana Cisarova; Ivana Cisarova Search for other works by this author on: GSW Google Scholar Roman Skala; Roman Skala Search for other works by this author on: GSW Google Scholar Zdenek Dvorak; Zdenek Dvorak Search for other works by this author on: GSW Google Scholar Jaroslav Zelinka; Jaroslav Zelinka Search for other works by this author on: GSW Google Scholar Karel Zak Karel Zak Search for other works by this author on: GSW Google Scholar Author and Article Information Vladimir Bouska Charles University, Faculty of Science, Prague, Czech Republic Ivana Cisarova Roman Skala Zdenek Dvorak Jaroslav Zelinka Karel Zak Publisher: Mineralogical Society of America First Online: 02 Mar 2017 Online ISSN: 1945-3027 Print ISSN: 0003-004X GeoRef, Copyright 2004, American Geological Institute. American Mineralogist (1998) 83 (11-12_Part_1): 1340–1346. https://doi.org/10.2138/am-1998-11-1224 Article history First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Vladimir Bouska, Ivana Cisarova, Roman Skala, Zdenek Dvorak, Jaroslav Zelinka, Karel Zak; Hartite from Bilina. American Mineralogist 1998;; 83 (11-12_Part_1): 1340–1346. doi: https://doi.org/10.2138/am-1998-11-1224 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyAmerican Mineralogist Search Advanced Search Abstract In the Bilina Mine (Czech Republic), a very chemically pure material corresponding to hartite was found as a product of distillation into the pelosiderite nodule during coalification of a lignite seam in the Miocene or later. The amount of the material available allowed characterizing this natural mineral equivalent of the hydrocarbon (+)-phyllocladane [16alpha (H)-phyllocladane] thoroughly. Elementary analysis of hartite from Bilina gave C = 87.45 wt% and H = 12.55 wt%, which corresponds to the formula C 20 H 34 . The IR spectrum demonstrated the presence of gem-dimethyl groups (doublet delta s CH 3 at 1369 and 1383 cm (super -1) ). Other bands indicated the presence of methyl and methylene groups. NMR studies showed that the hydrocarbon (hartite) molecule contains four CH 3 groups, nine CH 2 groups, four CH groups, and three quaternary carbon atoms. The sample exhibits a well-defined melting point between 71 and 71.5 degrees C. Measurements of optical rotation gave [alpha ] D = +24.2 degrees (CHCl 3 , c = 0.7). Lattice parameters from single-crystal study measured at 293(2) K were a = 11.407 (1), b = 20.952 (2), c = 7.4060 (8) Aa, alpha = 93.941 (9) degrees , beta = 100.750 (8) degrees , and gamma = 80.499 (9) degrees . The crystal system is triclinic with space group Pl, Z = 4, V = 1713.8 (3) Aa 3 . Densities are D m = 1.04 g/cm 3 and D x = 1.064 g/cm 3 , respectively. Isotopic composition of C in hartite from Bilina gave delta 13 C (sub (PDB)) = -24.4(1) per mil, a common value for coal and organic sedimentary material derived from higher plants. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.