ISSN
print 2570-7337
online 2570-7345
Copper arsenates from the ore stope at the Geschieber vein - north (Daniel level), Svornost, the Jáchymov ore district (Czech Republic)
Keywords
Abstract
An interesting mineral association of Cu arsenates was found at abandoned ore stope at the Geschieber vein - north at the Daniel level of the Svornost mine, the Jáchymov ore district, Krušné hory, Czech Republic. Tangdanite forms thin tabular crystals up to 3 mm in size and coatings and fine crystalline aggregates on the area up to some cm2. It has light green, bluish-green to emerald green color and perfect cleavage. It is monoclinic, space group C2/c, the unit-cell parameters refined from X-ray powder diffraction data are: a 54.335(12), b 5.579(2), c 10.459(2) Å, β 95.42(3)° and V 3156(2) Å3; its chemical analyses correspond to the empirical formula Ca1.99(Cu8.72Zn0.09Ni0.04Al0.04)Σ8.89[(AsO4)3.83 (PO4)0.14(SiO4)0.03]Σ4.00(SO4)0.41(OH)8.97·9H2O on the basis As+P+Si+V = 4 apfu. The results of Raman and infrared spectroscopy confirmed an absence of carbonate group in studied tangdanite. K-rich lavendulan was found as a relatively abundant sky blue crusts and coatings on the area up to some cm2 and hemispherical aggregates with a radial structure or rarely as a group of thin tabular crystals up to 0.2 mm in size. It is monoclinic, space group P21/n, the unit-cell parameters refined from X-ray powder diffraction data are: a 10.081(12), b 19.469(12), c 10.033(9) Å, β 90.32° and V 1969(2) Å3; its chemical analyses correspond to the empirical formula (Na0.63K0.16)Σ0.79Ca1.12(Cu4.82Al0.01)Σ4.83[(AsO4)3.86(PO4)0.07 (SO4)0.06(SiO4)0.01]Σ4.00Cl0.96·5H2O on the basis As+P+V+Si+S = 4 apfu. Olivenite occurs as olive green spherical aggregates with radial structure up to 8 mm in size and rarely as groups of acicular crystals in association with strashimirite and köttigite. It is orthorhombic, space group Pnnm, the unit-cell parameters refined from X-ray powder diffraction data are: a 8.6204(10), b 8.2332(9), c 5.9337(11) Å and V 421.13(7) Å3; its chemical analyses correspond to the empirical formula (Cu1.94Ni0.01Al0.01)Σ1.96[(AsO4)0.97(VO4)0.02(PO4)0.01]Σ1.00(OH)0.93 on the basis As+V+P = 1 apfu. Strashimirite forms there light green crystalline coatings on the area up to several cm2 and spherical aggregates with a radial structure in association with olivenite and lavendulan. Strashimirite is probably monoclinic, space group P2, the unit-cell parameters refined from X-ray powder diffraction data are: a 9.991(9), b 18.466(9), c 8.986(8) Å, β 96.5(2)° and V 1574(3) Å3; its chemical analyses correspond to the empirical formula (Cu7.83Ni0.18Ca0.09Zn0.06Co0.02Al0.02)Σ8.20 [(AsO4)3.81(PO4)0.07 (SO4)0.07(VO4)0.03(SiO4)0.02]Σ4.00 (OH)4.45·5H2O on the basis As+P+Si+V+S = 4 apfu. Chalcophyllite was found as rare emerald green thin tabular crystals up to 0.5 mm in size and crystalline aggregates. Its chemical composition is possible to express on the basis As+S+P+Si = 7 apfu by the empirical formula Cu17.83Al1.97[(AsO4)4.00(PO4)0.09]Σ4.09[(SO4)2.80(SiO4)0.11]Σ2.91(OH)23.27·36H2O. Brochantite, devilline, köttigite, erythrite and gypsum were also found in the association with Cu arsenates. The origin of the described mineral association is connected with (sub)recent weathering of primary ore minerals (tennantite, sphalerite, nickelskutterudite) in relatively dry conditions of abandoned mine adits.
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References
Burnham ChW (1962) Lattice constant refinement. Carnegie Inst Washington Year Book 61: 132-135
Burns PC, Hawthorne FC (1995) Rietveld refinement of the crystal structure of olivenite: a twinned monoclinic structure. Can Mineral 33: 885-888
Frost RL, Weier ML, Williams PA, Leverett P, Kloprogge JT (2007) Raman spectroscopy of the sampleite group of minerals. J Raman Spectrosc 38(5): 574-583. https://doi.org/10.1002/jrs.1702
Frost RL, Sejkora J, Čejka J, Keeffe EC (2009) Vibrational spectroscopic study of the arsenate mineral strashimirite Cu8(AsO4)4(OH)4.5H2O – relationship to other basic copper arsenates. Vibrat Spectrosc 50: 289-297. https://doi.org/10.1016/j.vibspec.2009.02.002
Giester G, Kolitsch U, Leverett P, Turner P, Williams PA (2007) The crystal structures of lavendulan, sampleite, and a new polymorph of sampleite. Eur J Miner 19(1): 75-93. https://doi.org/10.1127/0935-1221/2007/0019-0075
Gołębiowska B (1999) Strashimirite and cornwallite (copper arsenates) from Rędziny (Lower Silesia, Poland). Mineral Polon 30: 3-11
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(2): 155-181
Kampf AR, Sejkora J, Witzke T, Plášil J, Čejka J, Nash BP, Marty J (2017) Rietveldite, Fe(UO2)(SO4)2(H2O)5, a new uranyl sulfate mineral from Giveaway-Simplot mine (Utah, USA), Willi Agatz mine (Saxony, Germany) and Jáchymov (Czech Republic). J Geosci 62(2): 107-120. https://doi.org/10.3190/jgeosci.236
Li Yi, Lai Lairen, Zhou Weining, Qin Chaoke (2004) Mineralogical characteristics and geological significance of tyrolite. Acta Miner Sinica 24: 378-380
Libowitzky E (1999) Correlation of O-H stretching frequencies and O-H×××O hydrogen bond lengths in minerals. Monat Chem 130: 1047-1059. https://doi.org/10.1007/bf03354882
Ma Zhesheng, Qian Rongyao, Peng Zhizhong (1980) Clinotyrolite: a new mineral of hydrous copper arsenate discovered in Dongchuan, Yunnan. Acta Geol Sinica 54: 134-143
Ma Zhesheng, Li Guowu, Chukanov NV, Poirier G, Shi Necheng (2014) Tangdanite, a new mineral species form the Yunnan Province, China and the discreditation of “clinotyrolite”. Mineral Mag 78(3): 559-569. https://doi.org/10.1180/minmag.2014.078.3.06
Majzlan J, Plášil J, Dachs E, Benisek A, Mangold S, Škoda R, Abrosimova N (2021) Prediction and observation of formation of Ca–Mg arsenates in acidic and alkaline fluids: Thermodynamic properties and mineral assemblages at Jáchymov, Czech Republic and Rotgülden, Austria. Chem Geol 559: 119922 doi.org/10.1016/j.chemgeo.2020.119922. https://doi.org/10.1016/j.chemgeo.2020.119922
Minčeva-Stefanova J (1968) Strashimirite - new hydrated copper arsenate. Zap Vses Mineral Obšč 97: 470-477
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
Ondruš P, Veselovský F, Hloušek J, Skála R, Vavřín I, Frýda J, Čejka J, Gabašová A (1997) Secondary minerals of the Jáchymov (Joachimsthal) ore district. J Czech Geol Soc 42(4): 3-76
Ondruš P, Veselovský F, Gabašová A, Hloušek J, Šrein V (2003a) 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 (2003b) 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 (2003c) Primary minerals of the Jáchymov ore district. J Czech Geol Soc 48: 19-147
Petříček V, Dušek M, Plášil J (2016) Crystallographic computing system Jana2006: solution and refinement of twinned structures. Z Kristallogr 231: 583-599. https://doi.org/10.1515/zkri-2016-1956
Plášil J (2020) Krystalová struktura phurcalitu, Ca2[(UO2)3 O2(PO4)2]·7H2O, z Jáchymova. Bull Mineral Petrolog 28(2): 276-280
Plášil J, Hloušek J, Kasatkin AV (2014) Pozoruhodný výskyt metaťujamunitu a minerálů mixitové skupiny na Dušní žíle (Geister), Jáchymov (Česká republika). Bull mineral-petrolog Odd Nár Muz (Praha) 22(2) 215-220
Plášil J, Hloušek J, Kasatkin AV, Belakovskiy DI, Čejka J, Chernyshov D (2015a) Ježekite, Na8[(UO2)(CO3)3](SO4)2·3H2O, a new uranyl mineral from Jáchymov, Czech Republic. J Geosci 60(4): 259-267. https://doi.org/10.3190/jgeosci.203
Plášil J, Hloušek J, Kasatkin AV, Novák M, Čejka J, Lapčák L (2015b) Svornostite, K2Mg[(UO2)(SO4)2]2·8H2O, a new uranyl sulfate mineral from Jáchymov, Czech Republic. J Geosci 60(2): 113-121. http://dx.doi.org/10.3190/jgeosci.192
Plášil J, Hloušek J, Kasatkin AV, Škoda R, Novák M, Čejka J (2015c) Geschieberite, K2(UO2)(SO4)2(H2O)2, a new uranyl sulfate mineral from Jáchymov. Mineral Mag 79(1): 205-216. https://doi.org/10.1180/minmag.2015.079.1.16
Plášil J, Čejka J, Sejkora J, Hloušek J, Škoda R, Novák M, Dušek M, Císařová I, Němec I, Ederová J (2017a) Línekite, K2Ca3[(UO2)(CO3)3]2·8H2O, a new uranyl carbonate mineral from Jáchymov, Czech Republic. J Geosci 62(3): 201-213. https://doi.org/10.3190/jgeosci.241
Plášil J, Škácha P, Sejkora J, Kampf AR, Škoda R, Čejka J, Hloušek J, Kasatkin AV, Pavlíček R, Babka K (2017b) Plavnoite, a new K–Mn member of the zippeite group from Jáchymov, Czech Republic. Eur J Mineral 29(1), 117-128. https://doi.org/10.1127/ejm/2017/0029-2583
Plášil J, Škácha P, Sejkora J, Škoda R, Novák M, Veselovský F, Hloušek J (2017c) Babánekite, Cu3(AsO4)2 ∙8H2O, from Jáchymov, Czech Republic - a new member of the vivianite group. J Geosci 62(4): 261-270. http://dx.doi.org/10.3190/jgeosci.248
Plášil J, Kampf AR, Sejkora J, Čejka J, Škoda R, Tvrdý J (2018) Horákite, a new hydrated bismuth uranyl-arsenate-phosphate mineral from Jáchymov (Czech Republic) with a unique uranyl-anion topology. J Geosci 63(3): 265-276. https://doi.org/10.3190/jgeosci.267
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
Sejkora J, Čejka J (2019) New data on uranyl sulphate mineral shumwayite from Jáchymov - a Raman spectroscopy study. Bull Mineral Petrolog 27(2): 411-418
Sejkora J, Ďuďa R, Novotná M (2001) Minerály oxidační zóny žíly Krížová, Gelnica, Slovenské Rudohorie. Bull mineral-petrolog Odd Nár Muz (Praha) 9: 121-139
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
Sejkora J, Škácha P, Dvořák Z, Muzikant P (2015) Slavkovit z Preisselbergu, rudní revír Krupka (Česká republika) a jeho minerální asociace. Bull mineral-petrolog Odd Nár Muz (Praha) 23(1), 1-18
Sejkora J, Plášil J, Kampf AR (2018) Honzaite, (Ni,Co)2(AsO3OH)2(H2O)5, a new Ni-dominant analogue of burgessite, from Jáchymov, Czech Republic. Eur J Mineral 30(5): 989-997. https://doi.org/10.1127/ejm/2018/0030-2770
Škácha P, Plášil J, Horák V (2019a) Jáchymov - mineralogická perla Krušnohoří. 1-688, Academia, Praha
Škácha P, Sejkora J, Čejka J (2019b) Molecular structure of tangdanite from the Jánská vein, Příbram (Czech Republic) - a vibrational spectroscopy study. Bull Mineral Petrolog 27(1): 205-211
Števko M, Sejkora J, Bačík P (2011) Mineralogy and origin of supergene mineralization at the Farbiště ore occurrence near Poniky, central Slovakia. J Geosci 56: 273-298. https://doi.org/10.3190/jgeosci.098
Velebil D, Sejkora J (2018) Bismutem bohaté tennantity z Jáchymova (Česká republika). Bull Mineral Petrolog 26(2): 213-222
Veselý T (1982) Lokalizace zrudnění na žilách v důlním poli jámy Svornost a Josef ložiska Jáchymov. MS, Závěrečná zpráva ÚUG Praha, duben 1982, 11-13
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