ISSN
print 2570-7337
online 2570-7345
Enargite, tennantite-(Cu) and tangdanite from the Gápeľ copper deposit near Dobšiná, Spišsko-gemerské rudohorie Mts., Slovakia
Klíčová slova
Abstrakt
A new occurrence of enargite, tennantite-(Cu) and tangdanite was recently discovered at the Gápeľ copper deposit near Dobšiná, Spišsko-gemerské rudohorie Mts., Rožňava Co., Košice Region, Slovakia. Enargite is rare mineral at the studied locality and it occurs as dark-grey, metallic, prismatic crystals up 2.5 mm with perfect cleavage, developed on fractures of quartz-dolomite gangue. Its refined unit-cell parameters (for the orthorhombic space group Pmn21) are: a 7.4031(7) Å, b 6.4321(6) Å, c 6.1466(7) Å and V 292.68(4) Å3. Its chemical composition corresponds to empirical formula Cu3.04As0.98S3.98. Tennantite-(Cu) forms anhedral grains and aggregates replacing crystals of enargite. Its empirical formula is Cu6.00[Cu4.00(Cu1.07Fe0.64Zn0.42)Σ2.13]As3.87S13.04. Tangdanite occurs as turquoise-blue to blue-green radial aggregates up to 3 mm with silky lustre, developed on fractures of quartz gangue with partly weathered aggregates of minerals of the tennantite series. Its chemical composition corresponds to empirical formula Ca2.12(Cu8.77Zn0.19)Σ8.96 [(AsO4)3.91(PO4)0.08(SiO4)0.01]Σ4.00(SO4)0.43(OH)9.30·9H2O.
Soubory
Reference
Adiwidjaja VG, Löhn J (1970) Strukturverfeinerung von Enargit, Cu3AsS4. Acta Cryst B26(11): 1878-1879. https://doi.org/10.1107/s0567740870005034
Biagioni C, Sejkora J, Moëlo Y, Marcoux E, Mauro D, Dolníček Z (2022) Tennantite-(Cu), Cu12As4S13, from Layo, Arequipa Department, Peru: a new addition to the tetrahedrite-group minerals. Mineral Mag 86(2): 331-339. https://doi.org/10.1180/mgm.2022.26
Burnham CW (1962) Lattice constant refinement. Carnegie Institute Washington Yearbook 61: 132-135
Chovan M, Háber M, Jeleň S, Rojkovič I (1994) Ore textures in the Western Carpathians. Slovak Academic Press, Bratislava, 1-219
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
Háber M (1985) Mineralogicko-paragenetický a geochemický výskum Fe-dolomit-kremeň-chalkopyritových žíl v Novoveskej Hute. MS, ŠGÚDŠ-Geofond (62076_2), 1-95
Háber M (1978a) Postavenie Fe-dolomit-kremeň-chalko-pyritovej mineralizácie v Spišsko-gemerskom rudohorí. In: Varček C. Háber M, Miškovic J (1978) Syntéza metalogenetického vývoja Spišsko-gemerského rudohoria za r. 1976-1977. MS, ŠGÚDŠ-Geofond (42055), 1-146
Háber M (1978b) Mineralogicko-paragenetické pomery na ložisku Novoveská Huta Cu v Spišsko-gemerskom rudohorí. In: Hornická Příbram ve vědě a technice, sek geologie 411-423
Háber M, Krištín J, Rojkovič I (1993) The tennantite-tetrahedrite series in Permian formations of the Western Carpathians. Geol Carpath 45(1): 11-28
Halahyjová-Andrusovová G (1959) Mineralogické a paragenetické štúdium rudných ložísk v okolí Dobšinej. MS, ŠGÚDŠ-Geofond (11244), 1-140
Henao JA, de Delgado GD, Delgado JM, Castrillo FJ, Odreman O (1994) Single-crystal structure refinement of enargite [Cu3AsS4]. Mater Res Bull 29(11): 1121-1127. https://doi.org/10.1016/0025-5408(94)90181-3
Karanović L, Cvetković L, Poleti D, Balić-Zunić T, Makovicky E (2002) Crystal and absolute structure of enargite from Bor (Serbia). N Jb Miner, Mh 241-253. https://doi.org/10.1127/0028-3649/2002/2002-0241
Novotný L, Miháľ F (1987) Nové litostratigrafické jednotky v krompašskej skupine, Miner Slov 19(2): 97-113
Ondruš P (1993) A computer program for analysis of X-ray powder diffraction patterns. Materials Science Forum, EPDIC-2, Enchede, 133-136, 297-300. https://doi.org/10.4028/www.scientific.net/msf.133-136.297
Pfitzner A, Bernert T (2004) The system Cu3AsS4-Cu3SbS4 and investigations on normal tetrahedral structures. Z Kristallogr 219(1): 20-26
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
Rozlozsnik P (1935) Die geologischen Verhältnisse der Gegend von Dobsina. Geol Hungar 5: 1-118
Varček C (1962) Vývoj hydrotermálnej mineralizácie Spišsko-gemerského rudohoria v čase a priestore. Geol Práce Zoš 61: 101-112
Vozárová A (1996) Tectono-sedimentary evolution of Late Paleozoic basins based on interpretation of litostratigraphic data (Western Carpathians; Slovakia). Slovak Geol Mag 3-4: 251-271
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