Hostname: page-component-cd9895bd7-dzt6s Total loading time: 0 Render date: 2024-12-24T13:36:29.416Z Has data issue: false hasContentIssue false
  • English
  • Français

New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. VI. Melanarsite, K3Cu7Fe3+O4(AsO4)4

Published online by Cambridge University Press:  02 January 2018

Igor V. Pekov ,
Natalia V. Zubkova ,
Vasiliy O. Yapaskurt ,
Yury S. Polekhovsky ,
Marina F. Vigasina ,
Dmitry I. Belakovskiy ,
Sergey N. Britvin ,
Evgeny G. Sidorov  and
Dmitry Y. Pushcharovsky
Igor V. Pekov*
Affiliation:
Faculty of Geology, Moscow State University, Vorobievy Gory, 119991 Moscow, Russia
Natalia V. Zubkova
Affiliation:
Faculty of Geology, Moscow State University, Vorobievy Gory, 119991 Moscow, Russia
Vasiliy O. Yapaskurt
Affiliation:
Faculty of Geology, Moscow State University, Vorobievy Gory, 119991 Moscow, Russia
Yury S. Polekhovsky
Affiliation:
St Petersburg State University, Universitetskaya Nab. 7/9, 199034 St Petersburg, Russia
Marina F. Vigasina
Affiliation:
Faculty of Geology, Moscow State University, Vorobievy Gory, 119991 Moscow, Russia
Dmitry I. Belakovskiy
Affiliation:
Nanomaterials Research Center, Kola Science Center of Russian Academy of Sciences, Fersman Str. 18, 184209 Apatity, Russia
Sergey N. Britvin
Affiliation:
St Petersburg State University, Universitetskaya Nab. 7/9, 199034 St Petersburg, Russia
Evgeny G. Sidorov
Affiliation:
Institute of Volcanology and Seismology, Far Eastern Branch of the Russian Academy of Sciences, Piip Boulevard 9, 683006 Petropavlovsk-Kamchatsky, Russia
Dmitry Y. Pushcharovsky
Affiliation:
Faculty of Geology, Moscow State University, Vorobievy Gory, 119991 Moscow, Russia
*
E-mail: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

The new mineral melanarsite, K3Cu7Fe3+O4(AsO4)4, was found in the sublimates of the Arsenatnaya fumarole at the Second scoria cone of the Northern Breakthrough of the Great Tolbachik Fissure Eruption, Tolbachik volcano, Kamchatka Peninsula, Russia. It is associated with dmisokolovite, shchurovskyite, bradaczekite, hematite, tenorite, aphthitalite, johillerite, arsmirandite, As-bearing orthoclase, hatertite, pharmazincite, etc. Melanarsite occurs as tabular to prismatic crystals up to 0.4 mm, separate or combined in clusters up to 1 mm across or in interrupted crusts up to 0.02 cm × 1 cm × 1 cm covering basalt scoria. The mineral is opaque, black, with a vitreous lustre. Melanarsite is brittle. Mohs' hardness is ∼4 and the mean VHN = 203 kg mm–2. Cleavage was not observed and the fracture is uneven. D calc is 4.39 g cm–3. In reflected light, melanarsite is dark grey. Bireflectance is weak, anisotropism is very weak. Reflectance values [R1–R2, % (λ, nm)] are 10.5–9.4 (470), 10.0–8.9 (546), 9.7–8.7 (589), 9.5–8.6 (650). The Raman spectrum is reported. Chemical composition (wt.%, electron microprobe) is K2O 10.70, CaO 0.03, CuO 45.11, ZnO 0.24, Al2O3 0.32, Fe2O3 6.11, TiO2 0.12, P2O5 0.07, As2O5 36.86, total 99.56. The empirical formula, based on 20 O apfu, is (K2.81Ca0.01)∑2.82(Cu7.02Fe3+ 0.95Al0.08Zn0.04Ti0.02)∑8.11(As3.97P0.01)∑3.98O20. Melanarsite is monoclinic, C2/c, a = 11.4763(9), b = 16.620(2), c = 10.1322(8) Å, β = 105.078(9)°, V = 1866.0(3) Å3 and Z = 4. The strongest reflections of the powder X-ray diffraction pattern [d,Å(I)(hkl)] are 9.22(100)(110), 7.59(35)(1₃11), 6.084(17) (111), 4.595(26)(1₃31, 220, 2₃21), 3.124(22)(3₃31, 1₃51), 2.763(20)(400, 1₃52), 2.570(23)(043) and 2.473(16) (260, 2₃61, 350). Melanarsite has a novel structure type. Its crystal structure, solved from single-crystal X-ray diffraction data (R = 0.091), is based upon a heteropolyhedral pseudo-framework built by distorted Cu(1–3)O6 and (Fe,Cu)O6 octahedra and As(1–3)O4 tetrahedra. Two crystallographically independent K+ cations are located in the tunnels and voids of the pseudo-framework centring eight- and seven-fold polyhedra. The name reflects the mineral being an arsenate and its black colour (from the Greek μέλαν, black).

Keywords

melanarsitenew mineralpotassium copper iron arsenatecrystal structurefumarole sublimateTolbachik volcanoKamchatka
Type
Research Article
Information
Mineralogical Magazine , Volume 80 , Issue 5 , August 2016 , pp. 855 - 867
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2016

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Africano, F., Van Rompaey, G., Bernard, A. and Le Guern, F. (2002) Deposition of trace elements from high temperature gases of Satsuma-Iwojima volcano. Earth Planets Space, 54, 275–286.CrossRefGoogle Scholar
Agilent Technologies (2012) CrysAlisPro Software system, version 1.171.35.21. Agilent Technologies UK Ltd, Oxford, UK.Google Scholar
Brese, N.E. and O'Keeffe, M. (1991) Bond-valence parameters for solids. Acta Crystallographica, B47, 192–197.CrossRefGoogle Scholar
Cheynet, B., Dall'Aglio, M., Garavelli, A., Grasso, M.F. and Vurro, F. (2000) Trace elements from fumaroles at Vulcano Island (Italy): rates of transport and a thermochemical model. Journal of Volcanology and Geothermal Research, 95, 273–283.CrossRefGoogle Scholar
Clark, R.C. and Reid, J.S. (1995) The analytical calculation of absorption in multifaceted crystals. Acta Crystallographica, A51, 887–897.CrossRefGoogle Scholar
Effenberger, H. and Zemann, J. (1984) The crystal structure of caratiite. Mineralogical Magazine, 48, 541–546.CrossRefGoogle Scholar
Kahlenberg, V., Piotrowski, A. and Giester, G. (2000) Crystal structure of Na4[Cu402(S04)4]-MeCl (Me: Na, Cu, □) — the synthetic Na-analogue of piypite (caratiite). Mineralogical Magazine, 64, 1099–1108.CrossRefGoogle Scholar
Krivovichev, S.V., Vergasova, L.P., Filatov, S.K., Rybin, D.S., Britvin, S.N. and Ananiev, V.V. (2013) Hatertite, Na2(Ca,Na)(Fe3+,Cu)2(AsO4)3, a new alluaudite-group mineral from Tolbachik fumaroles, Kamchatka peninsula, Russia. European Journal of Mineralogy, 25, 683–691.CrossRefGoogle Scholar
Meniaylov, I.A., Nikitina, L.P. and Shapar', V.N. (1980) Geochemical Features of Exhalations of the Great Tolbachik Fissure Eruption. Nauka Publishing, Moscow.Google Scholar
Pekov, I.V., Zubkova, N.V., Chernyshov, D.Y., Zelenski, M.E., Yapaskurt, V.O. and Pushcharovsky, D.Y. (2013) A new Cu-rich variety of lyonsite from fumarolic sublimates of the Tolbachik volcano (Kamchatka, Russia) and its crystal structure. Doklady Earth Sciences, 448, 112–116.CrossRefGoogle Scholar
Pekov, I.V., Yapaskurt, V.O., Belakovskiy, D.I., Vigasina, M.F., Zubkova, N.V. and Sidorov, E.G. (2014a) Pharmazincite, IMA 2014–015. CNMNC Newsletter No. 21, August 2014, page 798; Mineralogical Magazine, 78, 797–804.Google Scholar
Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Belakovskiy, D.I., Lykova, I.S., Vigasina, M.F., Sidorov, E.G. and Pushcharovsky, D.Y. .(2014b) New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. I. Yurmarinite, Na7(Fe3+,Mg, Cu)4(AsO4)6 Mineralogical Magazine, 78, 905–917.CrossRefGoogle Scholar
Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Belakovskiy, D.I., Vigasina, M.F., Sidorov, E.G. and Pushcharovsky, D.Y. (2014c) New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. II. Ericlaxmanite and kozyrevs-kite, two natural modifications of Cu4O(AsO4)2. Mineralogical Magazine, 78, 1527—1543.Google Scholar
Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Belakovskiy, D.I., Chukanov, N.V., Lykova, I.S., Savelyev, D.P., Sidorov, E.G. and Pushcharovsky, D.Y. .(2014d) Wulffite, K3NaCu4O2(SO4)4, and parawulffite, K5Na3Cu8O4(SO4)8, two new minerals from fumarole sublimates of the Tolbachik volcano, Kamchatka, Russia. The Canadian Mineralogist, 52, 699—716.CrossRefGoogle Scholar
Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Polekhovsky, Y.S., Vigasina, M.F., Belakovskiy, D.I., Britvin, S.N., Sidorov, E.G. and Pushcharovsky, D.Y. (2014e) Melanarsite, IMA 2201–2048. CNMNC Newsletter No. 22, October 2014, page 1244; Mineralogical Magazine, 78, 1241–1248.Google Scholar
Pekov, I.V., Britvin, S.N., Yapaskurt, V.O., Polekhovsky, Y.S., Krivovichev, S.V., Vigasina, M.F. and Sidorov, E.G. (2015a) Arsmirandite, IMA 2014–2081. CNMNC Newsletter No. 23, February 2015, page 57; Mineralogical Magazine, 79, 51–58.Google Scholar
Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Belakovskiy, D.I., Vigasina, M.F., Sidorov, E.G. and Pushcharovsky, D.Y. .(2015b) New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. III. Popovite, Cu5O2(AsO4)2. Mineralogical Magazine, 79, 133–143.CrossRefGoogle Scholar
Pekov, I.V., Zubkova, N.V., Belakovskiy, D.I., Yapaskurt, V.O., Vigasina, M.F., Sidorov, E.G. and Pushcharovsky, D.Y. (2015c) New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. IV Shchurovskyite, K2CaCu6O2(AsO4)4, and dmisokolovite, K3Cu5AlO2(AsO4)4. Mineralogical Magazine, 79, 1737–1753.CrossRefGoogle Scholar
Pekov, I.V., Zubkova, N.V., Belakovskiy, D.I., Yapaskurt, V.O., Vigasina, M.F., Sidorov, E.G. and Pushcharovsky, D.Y. (2016) New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. V Katiarsite, KTiO(AsO4). Mineralogical Magazine, 80, 639—646.Google Scholar
Sheldrick, G.M. (2008) A short history of SHELX. Acta Crystallographica, A64, 112–122.Google Scholar
Starova, G.L., Krivovichev, S.V. and Filatov, S.K. (1998) Crystal chemistry of inorganic compounds based on chains of oxocentered tetrahedra. II. The crystal structure of Cu4O2[(As,V)O4]Cl. Zeitschrift für Kristallographie, 213, 650–653.Google Scholar
Symonds, R.B. and Reed, M.H. (1993) Calculation of multicomponent chemical equilibria in gas-solid-liquid systems: calculation methods, thermochemical data, and applications to studies of high-temperature volcanic gases with examples from Mount St. Helens. American Journal of Science, 293, 758—864.CrossRefGoogle Scholar
Symonds, R.B., Rose, W.I., Reed, M.H., Lichte, F.E. and Finnegan, D.L. (1987) Volatilization, transport and sublimation of metallic and non-metallic elements in high temperature gases of Merapi Volcano, Indonesia. Geochimica et Cosmochimica Acta, 51, 2083—2101.CrossRefGoogle Scholar
Vergasova, L.P. and Filatov, S.K. (2012) New mineral species in products of fumarole activity of the Great Tolbachik Fissure Eruption. Journal of Volcanology and Seismology , 6, 281-289.CrossRefGoogle Scholar
Zelenski, M. and Bortnikova, S. (2005) Sublimate speciation at Mutnovsky volcano, Kamchatka. European Journal of Mineralogy , 17, 107-118.CrossRefGoogle Scholar
Zelenski, M.E., Zubkova, N.V., Pekov, I.V., Polekhovsky, Yu. S. and Pushcharovsky, D.Y.u. (2012) Cupromolybdite, Cu3O(MoO4)2, a new fumarolic mineral from the Tolbachik volcano, Kamchatka Peninsula, Russia. European Journal of Mineralogy , 24, 749-757.Google Scholar