Dve nové lokality pyromorfitu v Slovenskej republike: Chvojnica a Hnilčík
Two new localities of pyromorphite in Slovak Republic: Chvojnica and Hnilčík
Klíčová slova
Abstrakt
Two new localities of pyromophite were recently discovered at the Chvojnica base metals occurrence in the Strážovské vrchy Mts. (Tatric Unit), and at the supergene zone of the Piata siderite-type hydrothermal vein near Hnilčík (Spišsko-gemerské rudohorie Mts., Gemeric Unit), Slovak Republic. At the Chvojnica occurrence pyromorphite occurs as bright green crystalline crusts and radial aggregates up to 3 mm developed in cavities and fractures in the porous quartz gangue with relicts of primary galena. It is associated with minor crystalline coatings of cerussite. The refined unit-cell parameters of pyromorphite from Chvojnica (for the hexagonal space group P63/m) are a 9.9750(2) Å, c 7.3569(2) Å and V 633.93(2) Å3. Except of dominant contents of Pb, P and Cl, only minor amounts of Ca (up to 0.10 apfu), Al (up to 0.05 apfu), Fe (up to 0.04 apfu), As (up to 0.05 apfu) and S (up to 0.02 apfu) were detected in studied pyromorphite. At the Hnilčík, pyromorphite occurs rarely in the cavities of the cavernous quartz-limonite gangue in the supergene zone of the Piata vein. It forms colourless to very light green prismatic crystals up to 2 mm in size, or crystalline aggregates associated with goethite, Mn oxides and malachite. The refined unit-cell parameters of pyromorphite from Hnilčík (for the hexagonal space group P63/m) are a 9.9484(15) Å, c 7.315(2) Å, V 627.0(2) Å3 (Ca-poor) and a 9.8983(6) Å, c 7.2589(8) Å, V 615.92(9) Å3 (Ca-rich). Pyromorphite from Hnilčík shows strong chemical zoning caused by variation of Pb and Ca contents, with outer parts of the crystals enriched in Ca. Contents of Ca are ranging between 0.09 to 0.96 apfu, with the atomic Pb/(Pb+Ca) ratio ranging from 0.98 to 0.81, which is close to the compositional boundary with phosphohedyphane. Interesting are also elevated concentrations of Cu reaching up to 0.07 apfu. Other minor elements detected in pyromorphite from Hnilčík are As (up to 0.12 apfu), Al, V and S (all up to 0.02 apfu).
Soubory
Reference
Burnham ChW (1962) Lattice constant refinement. Carnegie Inst Washington Year Book 61: 132-135
Grecula P, Abonyi A, Abonyiová M, Antaš J, Bartalský B, Bartalský J, Dianiška I, Ďuďa R, Gargulák M, Gazdačko Ľ, Hudáček J, Kobulský J, Lörincz L, Macko J, Návesňák D, Németh Z, Novotný L, Radvanec M, Rojkovič I, Rozložník L, Varček C, Zlocha Z (1995) Ložiská nerastných surovín Slovenského rudohoria. Zväzok 1. Geocomplex, Bratislava, 1-834
Hrušovský S, Bajtoš P, Murko I, Gonda S, Rychnavský P, Hradická A, Komoňová Z, Husár M, Čuj P, Komoň J, Staňa Š (1992) Záverečná správa úlohy Grétla-západ-VP, Surovina: Cu, Fe rudy. MS, archív ŠGÚDŠ-Geofond, Bratislava, 1-116 (78409)
Jonas J (1820) Ungerns Mineralreich orycto-geognostich und topographisch dargestellt. 1-414, Hartleben, Pest
Kampf AR, Steele IM, Jenkins RA (2006) Phosphohedyphane, Ca2Pb3(PO4)3Cl, the phosphate analog of hedyphane: Description and crystal structure. Am Mineral 91(11-12): 1909-1917 https://doi.org/10.2138/am.2006.2268
Klaproth MH (1802) Beiträge zur Chemischen Kenntniss der Mineralkörper. Dritter Band. 1-331, Decker und Compagnie, Posen und Heinrich August Rottmann, Berlin
Koděra M (1968) Nerosty Čs. Karpát. In: Československá vlastivěda. díl 1., Orbis, Praha, 285-301
Mohs F (1804) Des Herrn Jac. Fried. von der Null Mineralien-Kabinet. Dritte Abhtailung. 1-730, Camesinaischen Buchhandlung, Wien
Okudera H (2013) Relationships among channel topology and atomic displacements in the structures of Pb5(BO4)3Cl with B = P (pyromorphite), V (vanadinite), and As (mimetite). Am Mineral 98: 1573-1579 https://doi.org/10.2138/am.2013.4417
Ondruš P (1993) ZDS - A computer program for analysis of X-ray powder diffraction patterns. Materials Science Forum, 133-136, 297-300, EPDIC-2. Enchede https://doi.org/10.4028/www.scientific.net/msf.133-136.297
Ozdín D (2003) Mineralógia a genéza sideritovej mineralizácie Ďumbierskych Nízkych Tatier. Dizertačná práca, archív katedry mineralógie a petrológie PriF UK, Bratislava, 1-194
Plášil J, Sejkora J, Čejka J, Škácha P, Goliáš V (2009) Supergene mineralization of the Medvědín uranium deposit, Krkonoše Mountains, Czech Republic. J Geosci 54: 15-56 https://doi.org/10.3190/jgeosci.029
Pouchou JL, Pichoir F (1985) “PAP” (φρZ) procedure for improved quantitative microanalysis. In: Armstrong JT (ed): Microbeam analysis, San Francisco Press, San Francisco: 104-106
Sejkora J, Litochleb J, Strnad J, Kubica J (2008) Supergenní mineralizace slivického pásma (žíla Karel) jv. od Příbrami, Česká republika. Bull mineral-petrolog Odd Nár Muz (Praha) 16: 1-10
Sejkora J, Plášil J, Císařová I, Škoda R, Hloušek J, Veselovský F, Jebavá I (2011) Interesting supergene Pb-rich mineral association from the Rovnost mining field, Jáchymov (St. Joachimsthal), Czech Republic. J Geosci 56: 257-271 https://doi.org/10.3190/jgeosci.100
Strycharczyk M (2007) Crystal chemistry of synthetic pyromorphite-mimetite solid solutions. J Mining Inst 170(2): 22-24
Števko M (2020) Výskyt minerálov mimetit-pyromorfitovej série na území Slovenskej republiky. Minerál 28 (1): 11-18
Števko M, Ozdín D, Bačík P, Pršek J, Gramblička R (2008) Sekundárne minerály z polymetalickej mineralizácie pri Valaskej Belej, Slovenská republika. Bull mineral-petrolog Odd Nár Muz (Praha) 16(2): 177-184
Števko M, Gramblička R, Malíková R (2015) Nové údaje o supergénnych mineráloch z polymetalického ložiska Čavoj, Strážovské vrchy (Slovenská republika). Bull mineral-petrolog Odd Nár Muz (Praha) 23(1): 63-74
Tokody L (1926) Kristallographische Monographie der ungarischen Cerussite. Z Kristallogr Mineral 63(5-6): 385-456 https://doi.org/10.1524/zkri.1926.63.1.385
Tokody L (1941) A cerusszit szerkezete és alakja. Mat természettudom Ért 60: 163-190
Vendel M (1947) Studien aus der jungen karpathischen Metallprovinz. I. Teil. A József Nádor Műszaki és Gazdaságtudományi Egyetem Bánya - és Kohómérnök i Osztályának Közleményei, 16: 1-127
Vlasáč J, Mikuš T, Ondrejka M, Žiťňan P, Tuček P (2021) Supergene Pb-Cu-(Sb) mineral assemblage in abandoned epithermal deposit Rudno nad Hronom, Slovakia. Ageos 13(1): 107-118.
Vrtiška L, Malíková R, Sejkora J (2016) Zajímavý výskyt fosfátů v okolí Líštěnce u Votic (Česká republika). Bull mineral-petrolog Odd Nár Muz (Praha) 23(1): 114-131
Vrtiška L, Malíková R, Dolníček Z, Sejkora J (2019) Pyromorfit, kintoreit a cerusit z historického Ag-Pb-Zn ložiska Ratibořské Hory (Česká republika). Bull Mineral Petrolog 27(2): 394-410
Yvon K, Jeitschko W, Parthé E (1977) Lazy Pulverix, a computer program for calculation X-ray and neutron diffraction powder patterns. J Appl Cryst 10: 73-74 https://doi.org/10.1107/s0021889877012898
Zepharovich V (1859) Mineralogisches Lexicon für das Kaiserthum Österreich. Band I. 1-627, Wilhelm Braumüller, Wien
Zipser ChA (1817) Versuch eines topograhisch-mineralogischen Handbuches von Ungern. 1-440, Carl Friedrich Wigand, Oedenburg