ISSN
print 2570-7337
online 2570-7345
Brianyoungite from Plavno in the Jáchymov ore district (Czech Republic)
Keywords
Abstract
Rare zinc hydroxyl carbonate sulfate, mineral brianyoungite, was found in the area of skarn body near the hydrothermal vein No. 13 (2nd level of the shaft Vladimír), Plavno deposit, the Jáchymov ore district, Krušné hory Mountains, Czech Republic. Brianyoungite occurs as very thin white crystalline coatings on an area of up to several cm2 on altered skarn or more rarely it forms irregular crystalline aggregates up to 2 mm in size or spherical to hemispherical aggregates composed of small thin tabular crystals. Associated minerals are gypsum, hexahydrite, hydromagnesite, nesquehonite, serpierite, smithsonite, šlikite, Zn-rich malachite and ktenasite-like mineral. Brianyoungite is probably monoclinic, the unit-cell parameters refined from X-ray powder diffraction data are: a 15.747(4), b 6.254(2), c 5.482(2) Å, β 90.63(4)°, and V 539.8(4) Å3. Its chemical analyses (mean of 4 points) correspond to the empirical formula Zn3.00 [(CO3)0.74(SO4)0.23(SiO4)0.03]Σ1.00(OH)3.95 on the basis of 3 apfu Zn. Raman and infrared spectroscopy confirm presence of (OH)-, (CO3)2- and (SO4)2- groups in its crystal structure. The origin of brianyoungite is interpreted as product of (sub)recent supergene alteration of primary sphalerite and other minerals in skarn rock in environment of abandoned mine corridors.
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References
Bureš B, Sejkora J (2019) Supergenní karbonáty skarnového tělesa na uranovém ložisku Plavno u Jáchymova. Minerál 27(5): 460-465
Burnham ChW (1962) Lattice constant refinement. Carnegie Inst Washington Year Book 61: 132-135
Cotterell TE, Mason S, Green DI (2003) Brianyoungite from Elgar mine and Frongoch mine, Ceredigion, Wales. J Russell Soc 8: 33-34
Frost RL, López A, Wang L, Scholz R, Sampaio NP (2015) SEM, EDX and Raman and infrared spectroscopic study of brianyoungite Zn3(CO3,SO4)(OH)4 from Esperanza Mine, Laurion District, Greece. Spectrochim Acta Part A: Molecul Biomolec Spectrosc 149: 279-284. https://doi.org/10.1016/j.saa.2015.04.013
Hloušek J (2016) Jáchymov. Joachimsthal, díl II. Kateřina Hloušková, Jáchymov 539 s.
Hloušek J, Plášil J, Sejkora J, Škácha P (2014) Novinky a nové minerály z Jáchymova, (2003 - 2014). Bull mineral-petrolog Odd Nár Muz (Praha) 22: 155-181
Cho HG, Koo HJ (2022) First report for brianyoungite in the Korea. J Geol Soc Korea 58(2): 167-177
Chukanov NV (2014) Infrared spectra of mineral species: extended library. Springer Dordrecht
Lafuente B, Downs RT, Yang H, Stone N (2015) The power of databases: the RRUFF project. In: Armbruster T, Danisi RM, eds, Highlights in Mineralogical Crystallography, Berlin, Germany, W. De Gruyter: 1-30. https://doi.org/10.1515/9783110417104-003
Livingstone A, Champness PE (1993) Brianyoungite, a new mineral related to hydrozincite, from the north of England orefield. Mineral Mag 57: 665-670. https://doi.org/10.1180/minmag.1993.057.389.10
Mrňa F, Pavlů D (1959) Geologicko – montanistické posouzení šachty Plavno v Jáchymově, Geofond ÚÚG Praha, 17-26
Nakamoto K (2009) Infrared and Raman spectra of inorganic and coordination compounds Part A: Theory and applications in inorganic chemistry. John Wiley and Sons Inc. Hoboken, New Jersey. https://doi.org/10.1002/9780470405840
Ondruš P (1993) ZDS - A computer program for analysis of X-ray powder diffraction patterns. Materials Science Forum, 133-136, 297-300, EPDIC-2. Enschede. https://doi.org/10.4028/www.scientific.net/msf.133-136.297
Ondruš P, Veselovský F, Rybka R (1990) Znucalite, Zn12(UO2)Ca(CO3)3(OH)22.4H2O, a new mineral from Příbram, Czechoslovakia. Neu Jb Mineral, Mh 1990(9): 393-400
Ondruš P, Veselovský F, Hloušek J, Skála R, Frýda J, Čejka J, Gabašová A (1997a) Secondary minerals of the Jáchymov (Joachimsthal) ore district. J Czech Geol Soc 42: 3-76
Ondruš P, Veselovský F, Skála R, Císařová I, Hloušek J, Frýda J, Vavřín I, Čejka J, Gabašová A (1997b) New naturally occurring phases of secondary origin from Jáchymov (Joachimsthal). J Czech Geol Soc 42: 77-107
Ondruš P, Veselovský F, Gabašová A, Drábek M, Dobeš P, Malý K, Hloušek J, Sejkora J (2003a) Ore-forming processes and mineral parageneses of the Jáchymov ore district. J Czech Geol Soc 48: 157-192
Ondruš P, Veselovský F, Gabašová A, Hloušek J, Šrein V (2003b) Geology and hydrothermal vein system of the Jáchymov (Joachimsthal) ore district. J Czech Geol Soc 48: 3-18
Ondruš P, Veselovský F, Gabašová A, Hloušek J, Šrein V (2003c) Supplement to secondary and rock-forming minerals of the Jáchymov ore district. J Czech Geol Soc 48: 149-155
Ondruš P, Veselovský F, Gabašová A, Hloušek J, Šrein V, Vavřín I, Skála R, Sejkora J, Drábek M (2003d) Primary minerals of the Jáchymov ore district. J Czech Geol Soc 48: 19-147
Pauliš P (2021) Nový přehled minerálů České republiky a jejich lokalit. 1.,2.,3. díl. Kuttna Kutná Hora
Pavlíček R, Špalek J (2024) Rapidcreekit z haldy dolu Mayrau ve Vinařicích u Kladna - první nález v České republice. Bull Mineral Petrolog 32(2): 199-205. https://doi.org/10.46861/bmp.32.199
Pouchou JL, Pichoir F (1985) “PAP” (φρZ) procedure for improved quantitative microanalysis. In: Microbeam Analysis (Armstrong JT, ed.). San Francisco Press, San Francisco: 104-106
Rüsenberg KA, Pauliš P (1996) Umbildungen und Neubildungen in den Schlackehalden der Blei- und Silberhütte von Příbram/ČR. Aufschluss 47: 267-287
Sejkora J, Grey IE, Kampf AR, Mumme WG, Bureš B, Čejka J (2019) Šlikite, Zn2Mg(CO3)2(OH)2·4H2O, a new Zn–Mg carbonate from Plavno, Jáchymov ore district, Czech Republic. Eur J Mineral 31(5-6): 1047-1054. https://doi.org/10.1127/ejm/2019/0031-2866
Solnický J (1962) Závěrečná zpráva šachty Plavno, Geologický průzkum Praha, úsek Jáchymov, Geofond Praha, 25-28
Škácha P, Plášil J, Horák V (2019) Jáchymov: mineralogická perla Krušnohoří. Academia, Praha 682 s.
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
Števko M, Sejkora J, Malíková R (2018) Nové údaje o supergénnych mineráloch z ložiska Banská Štiavnica (Slovenská republika). Bull Mineral Petrolog 26(1): 90-101
Trvala C (1962) Geologická zpráva k likvidaci šachty Plavno v Jáchymově, Jáchymovské doly - Závod pro likvidaci, 13-15, 19-20
Veselý T (1983) Stavba a význam jednotlivých žilných uzlů uranového ložiska Jáchymov. Sbor geol Věd, ložisk geol mineral 27: 76-84
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
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