Abstract
Arsenic and antimony are highly toxic to humans, animals, and plants. Incorporation in alunite, jarosite, and beudantite group minerals can immobilize these elements and restrict their bioavailability in acidic, oxidizing environments. This paper reviews research on the magnitude and mechanisms of incorporation of As and Sb in, and release from, alunite, jarosite, and beudantite group minerals in mostly abiotic systems. Arsenate-for-sulfate substitution is observed for all three mineral groups, with the magnitude of incorporation being beudantite (3–8.5 wt% As) > alunite (3.6 wt% As) > natroalunite (2.8 wt%) > jarosite (1.6 wt% As) > natroalunite (1.5 wt% As) > hydroniumalunite (0.034 wt% As). Arsenate substitution is limited by the charge differences between sulfate (–2) and arsenate (–3), deficiencies in B-cations in octahedral sites and for hydroniumalunite, difficulty in substituting protonated H2O-for-OH- groups. Substitution of arsenate causes increases in the c-axis for alunite and natroalunite, and in the c- and a-axes for jarosite. The degree of uptake depends on, but limited by, the AsO4/TO4 ratio. Aerobic and abiotic As release from alunite and natroalunite is limited, especially between pH 5 and 8. Release of As is also very limited in As-bearing jarosite, natrojarosite, and ammoniumjarosite at pH 8 due to the formation of secondary maghemite, goethite, hematite, and Fe arsenates that resorb the liberated As. Abiotic reductive dissolution of As-bearing jarosite at pH 4, 5.5, and 7 is likewise restricted by the formation of secondary green rust sulfate, goethite, and lepidocrocite that take up the As. Similar processes have been observed for the aerobic dissolution of Pb-As-jarosite (beudantite analog), with secondary Fe oxyhydroxides resorbing the released As at pH 8. Higher amounts of As are released, however, during microbial-driven jarosite dissolution. Natural jarosite has been found to contain up to 5.9 wt% Sb5+ substituting for Fe3+ in the B-site of the mineral structure. Sb(V) is not released from jarosite at pH 4 during abiotic reductive dissolution, but at pH 5.5 and 7, up to 75% of the mobilized Sb can be structurally incorporated into secondary green rust sulfate, lepidocrocite, or goethite. Further research is needed on the co-incorporation of As, Sb, and other ions in, and the uptake and release of Sb from, alunite, jarosite, and beudantite group minerals, the influence of microbes on these processes and the long-term (>1 yr) stability of these minerals.
Funding My work on these minerals has been supported by grants from the U.K. Natural Environment Research Council (GR9/04094), the U.K. Engineering and Physical Sciences Research Council (Ph.D. studentship to Adrian Smith), the European Union (IEF 327194), the Royal Society and synchrotron beamtime from CCLRC Daresbury Laboratory (46-068 and 39-310).
Acknowledgments
I sincerely thank colleagues with whom I have worked with and had discussions about arsenic, antimony, and minerals of the alunite supergroup. There are many of you but I especially thank Pat Acero, Bill Dubbin, Dave Craw, Ference Forray, Julian Gale, Heather Jamieson, David Kossoff, Peter Cogram, Pam Murphy, Christina Smeaton, Adrian Smith, Mark Welch, and Kate Wright. Bill Dubbin provided the beudantite sample BM. 1987, and Andy Beard assisted with the electron microprobe chemical mapping. The manuscript was improved by comments from an anonymous reviewer and associate editor Andrew Elwood Madden.
References cited
Abdul, K.S.M., Jayasinghe, S.S., Chandana, E.P.S., Jayasumana, C., and De Silva, P.M.C.S. (2015) Arsenic and human health effects: A review. Environmental Toxicology and Pharmacology, 40, 828–846.10.1016/j.etap.2015.09.016Search in Google Scholar
Acero, P., Ayora, C., Torrentó, C., and Nieto, J.-M. (2006) The behavior of trace elements during schwertmannite precipitation and subsequent transformation into goethite and jarosite. Geochimica et Cosmochimica Acta, 70, 4130–4139.10.1016/j.gca.2006.06.1367Search in Google Scholar
Aguilar-Carrillo, J., Villalobos, M., Pi-Puig, T., Escobar-Quiroz, I.N., and Romero, F.M. (2018) Synergistic arsenic(V) and lead(II) retention on synthetic jarosite. I. Simultaneous structural incorporation behaviour and mechanism. Environmental Science: Processes & Impacts, 20, 354–369.10.1039/C7EM00426ESearch in Google Scholar
Alpers, C.N., Rye, R.O., Nordstrom, D.K., White, L.D., and King, B. (1992) Chemical, crystallographic and stable isotopic properties of alunite and jarosite from acid-hypersaline Australian lakes. Chemical Geology, 96, 203–226.10.1016/0009-2541(92)90129-SSearch in Google Scholar
Becker, U., and Gasharova, B. (2001) AFM observations and simulations of jarosite growth at the molecular scale: probing the basis for incorporation of foreign ions into jarosite as a storage mineral. Physics and Chemistry of Minerals, 28, 545–556.10.1007/s002690100188Search in Google Scholar
Bigham, J.M., and Nordstrom, D.K. (2000) Iron and aluminium hydroxysulfates from acid sulfate waters. In C.N. Alpers, J.L. Jambor, and D.K. Nordstrom, Eds., Sulfate Minerals: Crystallography, Geochemistry and Environmental Significance, 40, pp. 351–403. Reviews in Mineralogy and Geochemistry, Mineralogical Society of America, Chantilly, Virginia.10.2138/rmg.2000.40.7Search in Google Scholar
Cooper, M.A., and Hawthorne, F.C. (2012) Refinement of the crystal structure of zoned philipsbornite-hidalgoite from the Tsumeb mine, Namibia, and hydrogen bonding in the D2+G33+(T5+O4(TO3OH)(OH)6 alunite structures. Mineralogical Magazine, 76, 839–849.10.1180/minmag.2012.076.4.02Search in Google Scholar
Courtin-Nomade, A., Rakotoarisoa, O., Bril, H., Brybos, M., Forestier, L., Foucher, F., and Kunz, M. (2012) Weathering of Sb-rich mining and smelting residues: Insight in solid speciation and soil bacteria toxicity. Chemie der Erde, 72, 29–39.10.1016/j.chemer.2012.02.004Search in Google Scholar
Courtin-Nomade, A., Waltzing, T., Evrard, C., Soubrand, M., Lenain, J.-F., Ducloux, E., Ghorbel, S., Grosbois, C., and Bril, H. (2016) Arsenic and lead mobility: From tailings materials to the aqueous compartment. Applied Geochemistry, 64, 10–21.10.1016/j.apgeochem.2015.11.002Search in Google Scholar
Craw, D., Wilson, N., and Ashley, P.M. (2004) Geochemical controls on the environmental mobility of Sb and As at mesothermal antimony and gold deposits. Applied Earth Science, 113, 3–10.10.1179/037174504225004538Search in Google Scholar
D’Angeli, I.M., Carbone, C., Nagostinis, M., Parise, M., Vattano, M., Madonia, G., and De Waele, J. (2018) New insights on secondary minerals from Italian sulfuric acid caves. International Journal of Speleology, 47, 271–291.10.5038/1827-806X.47.3.2175Search in Google Scholar
Dutrizac, J.E., and Jambor, J.L. (1987) The behaviour of arsenic during jarosite precipitation: Arsenic precipitation at 97°C from sulphate or chloride media. Canadian Metallurgical Quarterly, 26, 91–101.10.1179/cmq.1987.26.2.91Search in Google Scholar
Dutrizac, J.E., and Jambor, J.L. (2000) Jarosites and their application in hydrometallurgy. In C.N. Alpers, J.L. Jambor, and D.K. Nordstrom, Eds., Sulfate Minerals. Crystallography, Geochemistry and Environmental Significance, 40, pp. 405–452. Reviews in Mineralogy and Geochemistry, Mineralogical Society of America, Chantilly, Virginia.10.1515/9781501508660-010Search in Google Scholar
Egal, M., Casiot, C., Morin, G., Parmentier, M., Bruneel, O., Lebrun, S., and Elbaz-Poulichet, F. (2009) Kinetic control on the formation of tooeleite, schwertmannite and jarosite by Acidithiobacillus ferrooxidans strains in an As(III)-rich acid mine water. Chemical Geology, 265, 432–441.10.1016/j.chemgeo.2009.05.008Search in Google Scholar
Feng, R., Wei, C., Tu, S., Ding, Y., Want, R., and Guo, J. (2013) The uptake and detoxification of antimony by plants: A review. Environmental and Experimental Botany, 96, 28–34.10.1016/j.envexpbot.2013.08.006Search in Google Scholar
Filippi, M., Drahota, P., Machvič, Böhmová, V., and Mihaljevič, M. (2015) Arsenic mineralogy and mobility in the arsenic-rich historical mine waste dump. Science of the Total Environment, 536, 713–728.10.1016/j.scitotenv.2015.07.113Search in Google Scholar PubMed
Flores, M., Patiño, F., Palacios, E.G., Reyes, I., Reyes, M., Flores, V.H., Juárez, J.C., and Pandiyan, T. (2016) The behaviour of arsenic during the thermal and chemical decomposition of the ammonium-arsenic jarosite. Preprints, doi:10.20944/preprints201610.0059.v1. MDPI, Basel, Switzerland.10.20944/preprints201610.0059.v1.Search in Google Scholar
Forray, F.L., Smith, A.M.L., Navrotsky, A., Wright, K., Hudson-Edwards, K.A., and Dubbin, W.E. (2014) Synthesis, characterization and thermochemistry of Pb-As-, Pb-Cu- and Pb-Zn-jarosite compounds. Geochimica et Cosmochimica Acta, 127, 107–119.10.1016/j.gca.2013.10.043Search in Google Scholar
Foster, A.L., Brown, G.E., Tingle, T.N., and Parks, G.A. (1998) Quantitative arsenic speciation in mine tailings using X‑ray absorption spectroscopy. American Mineralogist, 83, 553–568.10.2138/am-1998-5-616Search in Google Scholar
Gale, J.D., Wright, K., and Hudson-Edwards, K.A. (2010) A first principles determination of the orientation of H3O+ in hydronium alunite. American Mineralogist, 95, 1109–1112.10.2138/am.2010.3537Search in Google Scholar
Gieré, R., Sidenko, N.V., and Lazareva, E.V. (2003) The role of secondary minerals in controlling the migration of arsenic and metals from high-sulfide wastes (Berikul gold mine, Siberia). Applied Geochemistry, 18, 1347–1359.10.1016/S0883-2927(03)00055-6Search in Google Scholar
Gräfe, M., Beattie, D.A., Smith, E., Skinner, W.M., and Singh, B. (2008) Copper and arsenate co-sorption at the mineral-water interfaces of goethite and jarosite. Journal of Colloid and Interface Science, 322, 399–413.10.1016/j.jcis.2008.02.044Search in Google Scholar
Hawthorne, F.C., Krivovichev, S.V., and Burns, P.C. (2000) The crystal chemistry of sulfate minerals. In C.N. Alpers, J.L. Jambor, and D.K. Nordstrom, Eds., Sulfate Minerals. Crystallography, Geochemistry and Environmental Significance, 40, pp. 1–112. Reviews in Mineralogy and Geochemistry, Mineralogical Society of America, Chantilly, Virginia.10.1515/9781501508660-003Search in Google Scholar
Hudson-Edwards, K.A., Schell, C., and Macklin, M.G. (1999) Mineralogy and geochemistry of alluvium contaminated by metal mining in the Rio Tinto area, southwest Spain. Applied Geochemistry, 14, 1015–1030.10.1016/S0883-2927(99)00008-6Search in Google Scholar
Hudson-Edwards, K.A., Jamieson, H.E., Charnock, J.M., and Macklin, M.G. (2005) Arsenic speciation in waters and sediment of ephemeral floodplain pools, Ríos Agrio-Guadiamar, Aznalcóllar, Spain. Chemical Geology, 219, 175–192.10.1016/j.chemgeo.2005.02.001Search in Google Scholar
Jambor, J.L. (1999) Nomenclature of the alunite supergroup. Canadian Mineralogist, 37, 1323–1341.Search in Google Scholar
Jambor, J.L., Owens, A.R., Grice, J.D., and Feinglos, M.N. (1996) Gallobeudantite, PbGa3[(AsO4(SO4]2(OH)6 a new mineral species from Tsumbe, Namibia, and associated new gallium analogues of the alunite-jarosite family. Canadian Mineralogist, 34, 1305–1315.Search in Google Scholar
Jamieson, H.E., Robinson, C., Alpers, C.N., Nordstrom, D.K., Poustovetov, A., and Lowers, H.A. (2005) The composition of coexisting jarosite-group minerals and water from the Richmond mine, Iron Mountain, California. Canadian Mineralogist, 43, 1225–1242.10.2113/gscanmin.43.4.1225Search in Google Scholar
Johnston, S.G., Burton, E.D., Keene, A.F., Planer-Friedrich, B., Voegelin, A., Blackford, M.G., and Lumpkin, G.R. (2012) Arsenic mobilization and iron transformations during sulfidization of As(V)-bearing jarosite. Chemical Geology, 334, 9–24.10.1016/j.chemgeo.2012.09.045Search in Google Scholar
Karimian, N., Johnston, S.G., and Burton, E.D. (2017) Antimony and arsenic behavior during Fe(II)-induced transformation of jarosite. Environmental Science & Technology, 51, 4259–4268.10.1021/acs.est.6b05335Search in Google Scholar PubMed
Karimian, N., Johnston, S.G., and Burton, E.D. (2018) Antimony and arsenic partitioning during Fe2+-induced transformation of jarosite under acidic conditions. Chemosphere, 195, 515–523.10.1016/j.chemosphere.2017.12.106Search in Google Scholar PubMed
Kendall, M.R., Madden, A.S., Elwood Madden, M.E., and Hu, Q. (2013) Effects of arsenic incorporation on jarosite dissolution rates and reaction products. Geochimica et Cosmochimica Acta, 112, 192–207.10.1016/j.gca.2013.02.019Search in Google Scholar
Kocourková, E., Sracke, O., Houzar, S., Cempírek, J., Losos, Z., Filip, J., and Hršelová (2011) Geochemical and mineralogical control on the mobility of arsenic in a waste rock pile at Dlouhá Ves, Czech Republic. Journal of Geochemical Exploration, 110, 61–73.10.1016/j.gexplo.2011.02.009Search in Google Scholar
Kolitsch, U., Slade, P.G., Tiekink, E.R.T., and Pring, A. (1999) The structure of antimonian dussertite and the role of antimony in oxysalt minerals. Mineralogical Magazine, 63, 17–26.10.1180/002646199548277Search in Google Scholar
Kubisz, J. (1964) A study of minerals in the alunite–jarosite group. Polska Akademia Nauk-Prace Museum Ziemi, 22, 1–93.Search in Google Scholar
Kubisz, J. (1970) Studies on synthetic alkali-hydronium jarosites: I. Synthesis of jarosite and natrojarosite. Mineralobia Polonica, 1, 47–57.Search in Google Scholar
Leuz, A.-K., Mönch, H., and Johnson, C.A. (2006) Sorption of Sb(III) and Sb(V) to goethite: influence on Sb(III) oxidation and mobilization. Environmental Science & Technology, 40, 7277–7282.10.1021/es061284bSearch in Google Scholar
Luo, Z.Q., Zhou, X.T., Jia, Q.M., Chen, X.F., Tao, Z.C.H., and Liu, S.Q. (2015) Preparation of arsenical-natroalunite solid solutions with high crystallinity by hydrothermal method. Materials Research Innovations, 19, No. Sup, 6, S6–S26.10.1179/1432891715Z.0000000001439Search in Google Scholar
Mitsunobu, S., Takahashi, Y., Terada, Y., and Skata, M. (2010) Antimony(V) incorporation into synthetic ferrihydrite, goethite and natural iron oxyhydroxides. Environmental Science & Technology, 44, 3712–3718.10.1021/es903901eSearch in Google Scholar
Mitsunobu, S., Muramatsu, C., Watanabe, K., and Sakata, M. (2013) Behavior of antimony (V) during the transformation of ferrihydrite and its environmental implications. Environmental Science and Technology, 47, 9660–9667.10.1021/es4010398Search in Google Scholar
Nieto, J.M., Capitn, M.A., Sez, R., and Almodóvar, G.R. (2003) Beudantite: A natural sink for As and Pb in sulphide oxidation processes. Applied Earth Science B, 112, 293–296.10.1179/037174503225003134Search in Google Scholar
Nordstrom, D.K. (1982) The effect of sulfate on aluminum concentrations in natural waters: some stability relations in the system Al2O3-SO2-H2O at 298 K. Geochimica et Cosmochimica Acta, 46, 681–692.10.1016/0016-7037(82)90168-5Search in Google Scholar
Paktunc, D., and Dutrizac, J.E. (2003) Characterization of arsenate-for-sulfate substitution in synthetic jarosite using X‑ray diffraction and X‑ray absorption spectroscopy. Canadian Mineralogist, 41, 905–919.10.2113/gscanmin.41.4.905Search in Google Scholar
Paktunc, D., Foster, A., and Laflamme, G. (2003) Speciation and characterization of arsenic in Ketza River mine tailings using X‑ray absorption spectroscopy. Environmental Science & Technology, 37, 2067–2074.10.1021/es026185mSearch in Google Scholar PubMed
Patiño, F., Flores, M.U., Reyes, I.A., Reyes, M., Hernández, J., Rivera, I., and Juárez, J. (2013) Alkaline decomposition of synthetic jarosite with arsenic. Geochemical Transactions, 14, 2.10.1186/1467-4866-14-2Search in Google Scholar
Ripmeester, J.A., Ratcliffe, C.I., Dutrizac, J.E., and Jambor, J.L. (1986) Hydronium in the alunite-jarosite group. Canadian Mineralogist, 22, 773–784.Search in Google Scholar
Roca, A., Viñals, J., Arranz, M., and Calero, J. (1999) Characterization and alkaline decomposition/ cyanidation of beudantite-jarosite materials from Rio Tinto gossan ores. Canadian Metallurgical Quarterly, 38, 93–103.10.1179/cmq.1999.38.2.93Search in Google Scholar
Roussel, C., Néel, C., and Bril, H. (2000) Minerals controlling arsenic and lead solubility in an abandoned gold mine tailings. Science of the Total Environment, 263, 209–219.10.1016/S0048-9697(00)00707-5Search in Google Scholar
Sànchez, L., Cruells, M., and Roca, A. (1996) Sulfidization-cyanidation of jarosite species: applicability to the ogssan ores of Rio Tinto. Hydrometallurgy, 42, 35–49.10.1016/0304-386X(95)00076-SSearch in Google Scholar
Savage, K.S., Bird, D.K., and Ashley, R.P. (2000) Legacy of the California Gold Rush: Environmental geochemistry of arsenic in the southern Mother Lode Gold Disctrict. International Geology Review, 42, 385–415.10.1080/00206810009465089Search in Google Scholar
Savage, K.S., Bird, D.K., and O’Day, P.A. (2005) Arsenic speciation in synthetic jarosite. Chemical Geology, 215, 473–498.10.1016/j.chemgeo.2004.06.046Search in Google Scholar
Smeaton, C.M., Walshe, G.E., Smith, A.M.L., Hudson-Edwards, K.A., Dubbin, W.E., Wright, K., Beale, A.M., Fryer, B.J., and Weisener, C.G. (2012) Simultaneous reduction of Fe and As during the reductive dissolution of Pb-As jarosite by Shewanella putrefaciens CN32. Environmental Science & Technology, 46, 12,823–12,831.Search in Google Scholar
Smith, A.M.L., Dubbin, W.E., Wright, K., and Hudson-Edwards, K.A. (2006) Dissolution of lead- and lead-arsenic jarosites at pH 2 and 8: insights from batch experiments. Chemical Geology, 229, 344–361.10.1016/j.chemgeo.2005.11.006Search in Google Scholar
Sundar, S., and Chakravarty, J. (2010) Antimony toxicity. International Journal of Environmental Research and Public Health, 7, 4267–4277.10.3390/ijerph7124267Search in Google Scholar PubMed PubMed Central
Sunyer, A., and Viñals, J. (2011a) Arsenate substitution in natroalunite: A potential medium for arsenic immobilization. Part 1: Synthesis and compositions. Hydrometallurgy, 109, 54–64.10.1016/j.hydromet.2011.05.009Search in Google Scholar
Sunyer, A., and Viñals, J. (2011b) Arsenate substitution in natroalunite: A potential medium for arsenic immobilization. Part 2: Cell parameters and stability tests. Hydrometallurgy, 109, 106–115.10.1016/j.hydromet.2011.06.001Search in Google Scholar
Sunyer, A., Currubí, M., and Viñals, J. (2013) Arsenic immobilization as alunite-type phases: The arsenate substitution in alunite and hydronium alunite. Journal of Hazardous Materials, 261, 559–569.10.1016/j.jhazmat.2013.08.011Search in Google Scholar PubMed
Szymanski, J.T. (1988) The crystal structure of beudantite, Pb(Fe,Al)3[(As,S)O4] (OH)6 Canadian Mineralogist, 26, 923–932.Search in Google Scholar
Viñals, J., Sunyer, A., Molera, P., Cruells, M., and Llorca, N. (2010) Arsenic stabilization of calcium arsenate waste by hydrothermal precipitation of arsenical natroalunite. Hydrometallurgy, 104, 247–259.10.1016/j.hydromet.2010.06.013Search in Google Scholar
Welch, S.A., Christy, A.G., Kirste, D., Beavis, S.G., and Beavis, F. (2007) Jarosite dissolution I—Trace cation flux in acid sulfate soils. Chemical Geology, 245, 183–197.10.1016/j.chemgeo.2007.07.028Search in Google Scholar
World Health Organization (WHO) (1996) Health criteria and other supporting information. In Guidelines for Drinking-Water Quality, 2nd ed., vol. 2, p. 940–949. WHO, Geneva.Search in Google Scholar
World Health Organization (WHO) (1998) Addendum to vol. 2. In Guidelines for Drinking-Water Quality, 2nd ed., p. 281–283. WHO, Geneva. https://www.who.int/water_sanitation_health/dwq/2edaddvol2a.pdfSearch in Google Scholar
Xu, Z., Lǚ, B., Wu, J., Zhou, L., and Lan, Y. (2013) Reduction of Cr(VI) facilitated by biogenetic jarosite and analysis of its influencing factors with response surface methodology. Materials Science and Engineering C, 33, 3723–3729.10.1016/j.msec.2013.05.006Search in Google Scholar PubMed
Zheng, M.X., Xu, J.M., Smith, L., and Naidu, R. (2003) Why a fern Pteris multifida dominantly growing on an arsenic/heavy metal contaminated soil does not accumulate arsenic. Journal de Physique IV, 107, 1409–1411.Search in Google Scholar
© 2019 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Uptake and release of arsenic and antimony in alunite-jarosite and beudantite group minerals
- Trends in the discovery of new minerals over the last century
- Origin of milky optical features in type IaB diamonds: Dislocations, nano-inclusions, and polycrystalline diamond
- Zeolite-group minerals in phonolite-hosted deposits of the Kaiserstuhl Volcanic Complex, Germany
- Melting curve minimum of barium carbonate BaCO3 near 5 GPa
- The effect of coordination changes on the bulk moduli of amorphous silicates: The SiO2-TiO2 system as a test case
- Energetics of ethanol and carbon dioxide adsorption on anatase, rutile, and γ-alumina nanoparticles
- The effect of oxidation on the mineralogy and magnetic properties of olivine
- Phase, morphology, elemental composition, and formation mechanisms of biogenic and abiogenic Fe-Cu-sulfide nanoparticles: A comparative study on their occurrences under anoxic conditions
- Static compression of B2 KCl to 230 GPa and its P-V-T equation of state
- Geochemical characteristics of lawsonite blueschists in tectonic mélange from the Tavşanlı Zone, Turkey: Potential constraints on the origin of Mediterranean potassium-rich magmatism
- Origin of vesuvianite-garnet veins in calc-silicate rocks from part of the Chotanagpur Granite Gneiss Complex, East Indian Shield: The quantitative P-T-XCO2 topology in parts of the system CaO-MgO-Al2O3-SiO2-H2O-CO2 (+Fe2O3, F)
- A new occurrence of yimengite-hawthorneite and crichtonite-group minerals in an orthopyroxenite from kimberlite: Implications for mantle metasomatism
- Discovery of asimowite, the Fe-analog of wadsleyite, in shock-melted silicate droplets of the Suizhou L6 and the Quebrada Chimborazo 001 CB3.0 chondrites
- New Mineral Names
Articles in the same Issue
- Uptake and release of arsenic and antimony in alunite-jarosite and beudantite group minerals
- Trends in the discovery of new minerals over the last century
- Origin of milky optical features in type IaB diamonds: Dislocations, nano-inclusions, and polycrystalline diamond
- Zeolite-group minerals in phonolite-hosted deposits of the Kaiserstuhl Volcanic Complex, Germany
- Melting curve minimum of barium carbonate BaCO3 near 5 GPa
- The effect of coordination changes on the bulk moduli of amorphous silicates: The SiO2-TiO2 system as a test case
- Energetics of ethanol and carbon dioxide adsorption on anatase, rutile, and γ-alumina nanoparticles
- The effect of oxidation on the mineralogy and magnetic properties of olivine
- Phase, morphology, elemental composition, and formation mechanisms of biogenic and abiogenic Fe-Cu-sulfide nanoparticles: A comparative study on their occurrences under anoxic conditions
- Static compression of B2 KCl to 230 GPa and its P-V-T equation of state
- Geochemical characteristics of lawsonite blueschists in tectonic mélange from the Tavşanlı Zone, Turkey: Potential constraints on the origin of Mediterranean potassium-rich magmatism
- Origin of vesuvianite-garnet veins in calc-silicate rocks from part of the Chotanagpur Granite Gneiss Complex, East Indian Shield: The quantitative P-T-XCO2 topology in parts of the system CaO-MgO-Al2O3-SiO2-H2O-CO2 (+Fe2O3, F)
- A new occurrence of yimengite-hawthorneite and crichtonite-group minerals in an orthopyroxenite from kimberlite: Implications for mantle metasomatism
- Discovery of asimowite, the Fe-analog of wadsleyite, in shock-melted silicate droplets of the Suizhou L6 and the Quebrada Chimborazo 001 CB3.0 chondrites
- New Mineral Names