ISSN
print 2570-7337
online 2570-7345
Zeolite mineralization from Libá near Cheb (Czech Republic)
Keywords
Abstract
A new occurrence of zeolite mineralization with phillipsite-K, phillipsite-Ca, thomsonite-Ca, natrolite and gonnardite has been discovered in an active basalt quarry in the Libá village near Cheb (Czech Republic). Phillipsites form druses of white or colourless crystals up to 1 mm in size in small cavities. Chemical analyses of phillipsite-K correspond to the empirical formula (K1.85Na1.24Ca0.83Ba0.27Sr0.01)Σ4.20(Al6.28Si10.33O32)·12H2O and phillipsite-Ca to (Ca1.84K1.33Na0.14Ba0.06)Σ3.37(Al5.97Si10.20O32)·12H2O. The unit-cell parameters were refined from the powder X-ray data for phillipsite-Ca as: a 9.924(2), b 14.309(3), c 8.7414(14) Å, β 124.92(2)° and V 1017.8(5) Å3. Thomsonite-Ca forms transparent hemispheric radial aggregates up to 1 cm in size. Its unit-cell parameters refined from the powder X-ray data are a 13.105(5), b 13.857(5), c 13.247(6) Å and V 2266.7(6) Å3 and its chemical analyses correspond to the empirical formula Ca1.79Sr0.18Na1.05(Al4.81 Si5.15)O20·6H2O. Natrolite occurs as snow white hemispheric radial clusters. Its unit-cell parameters refined from the powder X-ray data are a 18.326(7), b 18.569(7), c 6.594(3) Å and V 2243.8(9) Å3 and empirical formula is Na1.60Ca0.05(Al2.08 Si3.02)O10·2H2O. Gonnardite forms colourless or white aggregates of flat acicular crystals up to 2 mm in size. Its unit-cell parameters refined from the powder X-ray data are a 13.221(8), c 6.6233(4) Å and V 1156.9 Å3 and empirical formula is (Na3.14Ca2.21Sr0.02)Σ5.37(Al8.92Si11.41)Σ20.33O40·12H2O.
Files
References
Alberti A, Cruciani G, Dauru I (1995) Order–disorder in natrolite-group minerals. Eur J Mineral 7: 501-508. https://doi.org/10.1127/ejm/7/3/0501
Artioli G, Torres Salvador MR (1991) Characterization of the natural zeolite gonnardite. Structure analysis of natural and cation exchanged species by the Rietveld method. Materials Science Forum 1156.1. https://doi.org/10.4028/www.scientific.net/msf.79-82.845
Coombs DS, Alberti A, Armbruster T, Artioli G, Colella C, Galli E, Grice JD, Liebau F, Mandarino JA, Minato H, Nickel EH, Passaglia E, Peacor DR, Quartieri S, Rinaldi R, Ross M, Sheppard RA, Tillmanns E, Vezzalini G (1997) Recommended nomenclature for zeolite minerals: report of the subcommittee on zeolites of the International Mineralogical Association, commission on new minerals and mineral names. Can Mineral 35: 1571-1606. https://doi.org/10.1180/002646198547800
Čtyřoký V, Koubek M (1959) Průzkum čediče 1957 - 1959 - Libá u Hazlova. MS archiv ČGS-Geofond Praha GF FZ003005
Gatta GD, Cappelletti P, Rotiroti N, Slebodnick C, Rinaldi R (2009) New insights into the crystal structure and crystal chemistry of the zeolite phillipsite. Am Mineral 94: 190-199. https://doi.org/10.2138/am.2009.3032
Hrzina P, Koroš I, Krutský J (2016) Libá, geologický průzkum (č. ložiska 3 019900), závěrečná zpráva s výpočtem zásob. MS archiv ČGS-Geofond Praha GF FZ007249
Laugier J, Bochu B (2011) LMGP-Suite of Programs for the Interpretation of X-ray Experiments. http://www.ccp14.ac.uk/tutorial/lmgp. přístup duben 2011
Kratochvíl J (1961) Topografická mineralogie Čech IV. NČSAV Praha
Krutský J (2019) Geologická dokumentace hornické činnosti na výhradním ložisku Libá (B3 019 000) v DB Libá, Libá I a Libá II za rok 2018 těženého organizací BAZALT CZ s.r.o. MS GET Praha
Pauliš P, Svejkovský J, Janeček O, Hrůzek L, Dvořák Z, Jebavá I (2013) Offretit z kamenolomu Vrbička u Valče v Doupovských horách. Bull mineral-petrolog Odd Nár Muz 21, 2: 171-178
Pauliš P, Hrůzek L, Janeček O, Sejkora J, Malíková R (2014) Cowlesit a doprovodná mineralizace z vrchu Hackenberg u České Kamenice (Česká republika). Bull mineral-petrolog Odd Nár Muz (Praha) 22, 2: 248-260
Pauliš P, Hrůzek L, Janeček O, Sejkora J, Malíková R, Pour O, Fediuk F (2015) Tschernichit, garronit-Ca a doprovodná zeolitová mineralizace z Jehly u České Kamenice (Česká republika). Bull mineral-petrolog Odd Nár Muz (Praha) 23, 2: 147-170
Pauliš P, Hrůzek L, Janeček O, Sejkora J, Malíková R, Fediuk F (2016a): Zeolitová mineralizace z Nového Oldřichova u Kamenického Šenova (Česká republika). Bull mineral-petrolog Odd Nár Muz (Praha) 24, 1: 100-113
Pauliš P, Hrůzek L, Janeček O, Sejkora J, Malíková R, Pour O, Fediuk F (2016b) Zeolitová mineralizace ze Svoru u Nového Boru (Česká republika). Bull mineral-petrolog Odd Nár Muz (Praha) 24, 2: 194-204
Pauliš P, Janeček O, Hrůzek L, Sejkora J, Malíková R, Fediuk F, Pour O (2017) Nordstrandit a zeolitová mineralizace fonolitu Tachovského vrchu u Doks (Česká republika). Bull Mineral Petrolog 25, 1: 69-84
Pauliš P, Zeman P, Zeman V, Sejkora J, Malíková R, Vrtiška L, Dolníček Z, Fediuk F, Pour O, Radoň M (2018a): Zeolitová mineralizace z Heřmanic u České Lípy (Česká republika). Bull Mineral Petrolog 26, 2: 123-137
Pauliš P, Zeman P, Zeman J, Sejkora J, Malíková R, Vrtiška L, Dolníček Z, Fediuk F, Pour O, Radoň M (2018b) Zeolitová mineralizace s thomsonitem-Ca z Babětína u Těchlovic v Českém středohoří (Česká republika). Bull Mineral Petrolog 26, 1: 1-11
Pauliš P, Hrůzek L, Sejkora J, Dolníček Z, Vrtiška L, Malíková R, Ekrt B, Pour O, Fediuk F, Janeček O (2019) Zeolitová mineralizace ze Zaječího vrchu a Poustevny u Nového Boru. Bull Mineral Petrolog 27, 2: 346-369
Pekov IV, Turchkova AG, Chukanov NV, Zadov AE, Grichin VG (2000) Chabazite-Sr, (Sr,Ca)[Al2Si4O12]·6H2O, a new zeolite mineral from Lovozero massif, Kola Peninsula. Zap Vseross mineral Obšč 129, 4: 54-58
Pouchou JL, Pichoir F (1985) “PAP” (φρZ) procedure for improved quantitative microanalysis. In: Microbeam Analysis (J. T. Armstrong, ed.). San Francisco Press, San Francisco, 104-106
Stahl K, Kvick A, Smith JV (1990) Thomsonite, a neutron diffraction study at 13K. Acta Crystallogr C 46: 1370-1373. https://doi.org/10.1107/s0108270189013259