The information given here is provided by the IMA Commission on New Minerals, Nomenclature and Classification for comparative purposes and as a service to mineralogists working on new species.
Each mineral is described in the following format:
Mineral name, if the authors agree on its release prior to the full description appearing in press
Chemical formula (ideal formula)
Mineral symbol
Type locality
Full authorship of proposal
E-mail address of corresponding author
Relationship to other minerals
Crystal system, Space group; Structure determined, yes or no
Unit-cell parameters
Strongest lines in the powder X-ray diffraction pattern
Type specimen repository and specimen number
Citation details for the mineral prior to publication of full description
Citation details concern the fact that this information will be published in the Mineralogical Magazine on a routine basis, as well as being added month by month to the Commission's website.
It is still a requirement for the authors to publish a full description of the new mineral.
NO OTHER INFORMATION WILL BE RELEASED BY THE COMMISSION
NEW MINERAL PROPOSALS APPROVED IN JUNE 2023
IMA No. 2022-145
-
Papikeite
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NaFe2+2(Mg3Al2)(Si5Al3)O22(OH)2
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Ppk
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In the southeastern shore of the island of Ærøya, Norway, (58°24’56” N, 8°46’03” E)
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Jan B. Kihle, Maxwell C. Day and Frank C. Hawthorne
-
*E-mail: frank.hawthorne@umanitoba.ca
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Amphibole supergroup
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Orthorhombic: Pnma; structure determined
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a = 18.6322(6), b = 17.8492(6), c = 5.2811(2) Å
-
3.223(70), 3.059(100), 2.819(55), 2.670(54), 2.565(95), 2.542(93), 2.498(61), 1.511(68)
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Type material is deposited in the collections of the Royal Ontario Museum, 100 Queens Park, Toronto, ON M5S 2C6, Canada, accession number M60376
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How to cite: Kihle, J.B., Day, M.C. and Hawthorne, F.C. (2023) Papikeite, IMA 2022-145. CNMNC Newsletter 74; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2023.54
IMA No. 2023-002
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Enricofrancoite
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KNaCaSi4O10
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Enf
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In crusts covering metamorphosed lapilli related to the 1872 eruption, Somma-Vesuvius volcano, Naples, Italy (40°49’17.0” N, 14°25’34.6” E)
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Giuseppina Balassone, Taras L. Panikorovskii*, Annamaria Pellino, Ayya V. Bazai, Vladimir N. Bocharov, Olga F. Goychuk, Evgenia Y. Avdontseva, Victor N. Yakovenchuk, Sergey V. Krivovichev, Carmela Petti, Piergiulio Cappelletti, Nicola Mondillo, Anna Moliterni and Angela Altomare
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*E-mail: t.panikorovskii@ksc.ru
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Litidionite group
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Triclinic: P $\overline 1$; structure determined
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a = 7.0155(4), b = 8.0721(4), c = 10.0275(4) Å, α = 104.420(4), β = 99.764(4), γ = 115.126(5)°
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6.75(35), 4.05(15), 3.65(18), 3.37(100), 3.22(75), 2.976(13), 2.835(18), 2.409(85)
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Type material is deposited in the collections of the Royal Mineralogical Museum, University of Naples “Federico II”, Via Mezzocannone 8, 80134 Napoli, Italy, catalogue number 17926/E6457
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How to cite: Balassone, P., Panikorovskii, T.L., Pellino, A., Bazai, A.V., Bocharov, V.N., Goychuk, O.F., Avdontseva, E.Y., Yakovenchuk, V.N., Krivovichev, S.V., Petti, C., Cappelletti, P., Mondillo, N., Moliterni, A. and Altomare, A. (2023) Enricofrancoite, IMA 2023-002. CNMNC Newsletter 74; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2023.54
IMA No. 2023-015
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Magnesio-dutrowite
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Na(Mg2.5Ti0.5)Al6(Si6O18)(BO3)3(OH)3O
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Mdtw
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Rędziny, near Kamienna Góra, Karkonosze granite massif, northeastern part of the Bohemian Massif, Western Sudetes, Poland (50°49’06” N, 15°55’28” E)
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Adam Pieczka*, Mateusz P. Sęk, Marcin Stachowicz, Adam Włodek, Bożena Gołębiowska, Jarosław Majka and Krzysztof Woźniak
-
*E-mail: pieczka@agh.edu.pl
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Tourmaline supergroup
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Trigonal: R3m; structure determined
-
a = 15.9682(4), c = 7.2081(2) Å
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6.39(41), 4.231(56), 3.992(69), 3.488(51), 2.967(65), 2.582(100), 2.045(40), 1.923(25)
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Type material is deposited in the collections of the Mineralogical Museum, Institute of Geological Sciences, University of Wrocław, Cybulskiego 30, 50-205 Wrocław, Poland, catalogue number MMUWr IV8121
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How to cite: Pieczka, A., Sęk, M.P., Stachowicz, M., Włodek, A., Gołębiowska, B., Majka, J. and Woźniak, K. (2023) Magnesio-dutrowite, IMA 2023-015. CNMNC Newsletter 74; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2023.54
IMA No. 2023-017
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Mckelveyite-(Nd)
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NaCaBa3Nd(CO3)6⋅3H2O
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Mkv-Nd
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Kirovsky Mine (level +252 m), Kukisvumchorr Mount, Khibiny Massif, Murmansk Oblast, Russia (67°40’ N, 33°43’ E)
-
Inna Lykova*, Ralph Rowe, Glenn Poirier and Stephanie Barnes
-
*E-mail: ilykova@nature.ca
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Mckelveyite group
-
Monoclinic: Cc; structure determined
-
a = 15.877(1), b = 9.1792(7), c = 13.8292(8) Å, β = 112.251(5)°
-
6.39(36), 4.584(37), 4.314(100), 3.124(84), 2.647(48), 2.623(26), 2.040(22), 2.019(29)
-
Type material is deposited in the collections of the Canadian Museum of Nature, PO Box 3443, Station “D”, Ottawa, Canada, catalogue number CMNMC 90535
-
How to cite: Lykova, I., Rowe, R., Poirier, G. and Barnes, S. (2023) Mckelveyite-(Nd), IMA 2023-017. CNMNC Newsletter 74; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2023.54
IMA No. 2023-018
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Bainbridgeite-(NdCe)
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Na2Ba2NdCe(CO3)6⋅3H2O
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Bbg-NdCe
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Poudrette (Demix) quarry, Mont Saint-Hilaire, Quebec, Canada (45°33’46” N, 73°08’30” W)
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Inna Lykova*, Ralph Rowe, Glenn Poirier, Henrik Friis, Kelsie Ojaste and Stephanie Barnes
-
*E-mail: ilykova@nature.ca
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Mckelveyite group
-
Triclinic: P1; structure determined
-
a = 9.0525(3), b = 9.1178(2), c = 6.8518(2) Å, α = 102.575(3), β = 116.272(4), γ = 59.788(4)°
-
6.17(50), 4.407(100), 4.077(30), 3.241(32), 2.870(88), 2.621(39), 2.253(22), 1.998(25)
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Type material is deposited in the collections of the Canadian Museum of Nature, PO Box 3443, Station “D”, Ottawa, Canada, catalogue number CMNMC 90534
-
How to cite: Lykova, I., Rowe, R., Poirier, G., Friis, H., Ojaste, K. and Barnes, S. (2023) Bainbridgeite-(NdCe), IMA 2023-018. CNMNC Newsletter 74; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2023.54
IMA No. 2023-019
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Ferrodimolybdenite
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FeMo2S4
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Fdmol
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Daba-Siwaqa complex, Transjordan Plateau, Jordan (31°22’01” N, 36°11’10” E)
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Evgeny V. Galuskin*, Irina O. Galuskina, Joachim Kusz, Maria Książek, Yevgeny Vapnik and Grzegorz Zieliński
-
*E-mail: evgeny.galuskin@us.edu.pl
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Known synthetic analogue
-
Monoclinic: C2/c; structure determined
-
a = 11.8249(8), b = 6.5534(3), c = 13.005(1) Å, β = 114.474(9)°
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5.918(100), 5.194(42), 2.865(47), 2.601(65), 2.597(33), 2.081(54), 2.046(25), 2.037(57)
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Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 115162, Russia, registration number 6005/1
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How to cite: Galuskin, E.V., Galuskina, I.O., Kusz, J., Książek, M., Vapnik, Y. and Zieliński, G. (2023) Ferrodimolybdenite, IMA 2023-019. CNMNC Newsletter 74; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2023.54
IMA No. 2023-021
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Masaitisite
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KCu5O2(SeO3)2Cl3
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Msts
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Yadovitaya (Poisonous) fumarole, Second scoria cone of the Northern Breakthrough of the Great Tolbachik Fissure Eruption, Tolbachik volcano, Kamchatka peninsula, Far-Eastern Region, Russia (55°41’ N, 160°14’ E, 1200 m a.s.l.)
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Igor V. Pekov*, Mikhail N. Murashko, Atali A. Agakhanov, Marina F. Vigasina, Sergey N. Britvin and Anna G. Turchkova
-
*E-mail: igorpekov@mail.ru
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The K analogue of ilinskite
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Orhorhombic: Pnma
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a = 18.154(5), b = 6.451(2), c = 10.567(3) Å
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9.03(100), 5.50(55), 5.27(88), 3.276(52), 3.227(71), 2.633(63), 2.526(46), 2.347(43)
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Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 6006/1
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How to cite: Pekov, I.V., Murashko, M.N., Agakhanov, A.A., Vigasina, M.F., Britvin, S.N. and Turchkova, A.G. (2023) Masaitisite, IMA 2023-021. CNMNC Newsletter 74; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2023.54
IMA No. 2023-022
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Ferriandrosite-(Ce)
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MnCe(Fe3+AlMn2+)(Si2O7)(SiO4)O(OH)
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Fea-Ce
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Július manganese ore occurrence, north-eastern slopes of the Turecká hill, 4 km WSW of the Betliar village, Rožňava Co., Košice Region, Slovakia (48°41’53.3” N, 20°29’20.1” E, 953 m a.s.l.)
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Martin Števko*, Pavol Myšľan, Cristian Biagioni, Daniela Mauro and Tomáš Mikuš
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*E-mail: msminerals@gmail.com
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Epidote supergroup
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Monoclinic: P21/m; structure determined
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a = 8.8483(4), b = 5.7307(3), c = 10.0314(5) Å, β = 113.366(1)°
-
7.8(m), 3.511(ms), 2.895(vs), 2.704(m), 2.615(s), 2.177(m), 2.112(mw), 1.657(mw)
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Type material is deposited in the collections of the Department of Mineralogy and Petrology, National Museum, Cirkusová 1740, 19300 Prague 9, Czech Republic, catalogue number P1P 2/2023, and the Museo di Storia Naturale, Università di Pisa, Via Roma 79, Calci (PI), Italy, catalogue number 20063
-
How to cite: Števko, M., Myšľan, P., Biagioni, C., Mauro, D. and Mikuš, T. (2023) Ferriandrosite-(Ce), IMA 2023-022. CNMNC Newsletter 74; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2023.54
IMA No. 2023-023
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Wiperamingaite
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NaCaFe3+Al(PO4)F5(OH)⋅H2O
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Wip
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Wiperaminga Hill West Quarry, Boolcoomatta Reserve, Olary Province, South Australia, Australia (31°57’42” S, 140°27’34” E)
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Peter Elliott* and Anthony R. Kampf
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*E-mail: peter.elliott@adelaide.edu.au
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New structure type
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Orthorhombic: P212121; structure determined
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a = 5.354(1), b = 5.591(1), c = 26.279(5) Å
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4.29(28), 3.868(100), 2.825(32), 2.682(20), 2.397(19), 2.199(29), 1.933(52), 1.702(23)
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Type material is deposited in the collections of the South Australian Museum, North Terrace, Adelaide, South Australia 5000, Australia, registration number G35314
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How to cite: Elliott, P. and Kampf, A.R. (2023) Wiperamingaite, IMA 2023-023. CNMNC Newsletter 74; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2023.54
IMA No. 2023-024
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Alfredcasparite
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Sr2TiO(Si2O7)
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Afc
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Caspar quarry, Bellerberg volcano, Eifel, Germany (50°35’14” N, 7°23’54” E)
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Rafał Juroszek*, Krystian Prusik and Christof Schӓfer
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*E-mail: rafal.juroszek@us.edu.pl
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The Sr analogue of fresnoite
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Tetragonal: P4bm
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a = 8.3200(3), c = 5.0239(2) Å
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3.204(40), 2.990(100), 2.631(29), 2.512(18), 2.082(16), 2.018(15), 1.872(15), 1.817(16)
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Type material is deposited in the collections of the Natural History Museum Mainz/State Collection for Natural History Rhineland-Palatinate, Reichklarastrasse 10, 55116 Mainz, Germany, catalogue number NHMMZ M 2023/1-LS
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How to cite: Juroszek, R., Prusik, K. and Schӓfer, C. (2023) Alfredcasparite, IMA 2023-024. CNMNC Newsletter 74; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2023.54
IMA No. 2023-025
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Paramolybdomenite
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PbSeO3
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Pmdm
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Western paleo-fumarole field, Mountain 1004, Tolbachik volcano, Kamchatka peninsula, Far-Eastern Region, Russia
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Igor V. Pekov*, Sergey N. Britvin, Atali A. Agakhanov, Marina F. Vigasina, Anna G. Turchkova and Pavel S. Zhegunov
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*E-mail: igorpekov@mail.ru
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A dimorph of molybdomenite
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Monoclinic: P21/c; structure determined
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a = 8.997(1), b = 8.159(1), c = 9.032(1) Å, β = 103.33(1)°
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3.823(17), 3.534(34), 3.293(100), 3.244(63), 2.997(35), 2.981(36), 2.788(49), 2.760(26)
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Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 6007/1
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How to cite: Pekov, I.V., Britvin, S.N., Agakhanov, A.A., Vigasina, M.F., Turchkova, A.G. and Zhegunov, P.S. (2023) Paramolybdomenite, IMA 2023-025. CNMNC Newsletter 74; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2023.54
NEW MINERAL PROPOSALS APPROVED IN JULY 2023
IMA No. 2022-136
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Magnesioqingheiite
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Na2Mg(MgAl)(PO4)3
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Mqin
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Western ridge of the Stockhorn, Zermatt valley, Valais, Switzerland (3400 m a.s.l.)
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Fernando Cámara, Christian Chopin* and Damien Deldicque
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*E-mail: chopin@geologie.ens.fr
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Alluaudite supergroup
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Monoclinic: P21/n; structure determined
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a = 11.7248(3), b = 12.3146(2), c = 6.3886(1) Å, β = 114.226(3)°
-
2.989(41), 2.844(35), 2.677(100), 2.518(43), 2.485(49), 2.185(59), 1.728(52), 1.581(35)
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Type material is deposited in the collections of the Musée de Minéralogie, Ecole des Mines de Paris, 60 boulevard Saint-Michel, 75006 Paris, France, catalogue number ENSMP 84268 (holotype), and the Museum National d'Histoire Naturelle, 61 rue Buffon, Paris, France, catalogue number MNHN_MIN_223.002 (cotype)
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How to cite: Cámara, F., Chopin, C. and Deldicque, D. (2023) Magnesioqingheiite, IMA 2022-136. CNMNC Newsletter 74; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2023.54
IMA No. 2023-026
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Shinichengite
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Ca5[BSi2O7(OH)2]2⋅6H2O
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Shnc
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Shijiangshan mine, at the boundary between Hexigten Banner and Linxi County, Chifeng City, Inner Mongolia, China (43°43’15” N, 117°50’32” E)
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Ningyue Sun, Yuan Xue, Jinhua Hao, Guowu Li*, Hongtao Shen, Chang Li, Aiqing Chen, Natalia V. Zubkova and Igor V. Pekov
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*E-mail: liguowu@cugb.edu.cn
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Chemically related to oyelite
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Triclinic: P1; structure determined
-
a = 7.2341(2), b = 11.2289(3), c = 12.3471(4) Å, α = 87.229(2), β = 81.587(2), γ = 89.986(2)°
-
12.26(100), 5.21(5), 4.073(7), 3.375(5), 3.024(13), 2.739(6), 2.630(6), 2.444(7)
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Type material is deposited in the collections of the Geological Museum of China, Xisi, Yangrou Hutong No. 15, Xicheng District, Beijing, People's Republic of China, catalogue number GMCTM2023001 (holotype), and the Crystal Structure Laboratory, China University of Geosciences, Beijing 100083, People's Republic of China, catalogue number SJS-2 (cotype)
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How to cite: Sun, N., Xue, Y., Hao, J., Li, G., Shen, H., Li, C., Chen, A., Zubkova, N.V. and Pekov, I.V. (2023) Shinichengite, IMA 2023-026. CNMNC Newsletter 74; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2023.54
IMA No. 2023-027
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Naalasite
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NaAl(AsO3OH)2⋅H2O
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Naa
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Torrecillas mine, Salar Grande, Iquique Province, Tarapacá Region, Chile (20°58’36” S, 70°08’31” W)
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Anthony R. Kampf*, Gerhard Möhn, Chi Ma and Joy Désor
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*E-mail: akampf@nhm.org
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The Al analogue of nafeasite
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Trigonal: R32; structure determined
-
a = 8.4796(6), c = 26.399(3) Å
-
9.04(20), 7.23(89), 4.33(30), 3.127(100), 3.085(33), 2.809(15), 2.518(15), 1.417(16)
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Type material is deposited in the collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue number 76282
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How to cite: Kampf, A.R., Möhn, G., Ma, C. and Désor, J. (2023) Naalasite, IMA 2023-027. CNMNC Newsletter 74; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2023.54
IMA No. 2023-028
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Regerite
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KFe6(PO4)4(OH)7(H2O)6⋅4H2O
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Reg
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Kreuzberg pegmatite, Pleystein, Oberpfalz, northeast Bavaria, Germany (49°38’47” N, 12°24’42” E)
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Christian Rewitzer, Rupert Hochleitner, Ian E. Grey*, Anthony R. Kampf, Stephanie Boer and Colin M. MacRae
-
*E-mail: ian.grey@csiro.au
-
New structure type
-
Monoclinic: P21/c; structure determined
-
a = 15.353(3), b = 17.351(4), c = 9.887(2) Å, β = 95.26(3)°
-
11.52(63), 7.69(100), 5.85(20), 3.877(33), 3.797(28), 2.934(22), 2.543(21), 1.530(19)
-
Type material is deposited in the collections of the Mineralogical State Collection Munich (SNSB), Theresienstrasse 41, 80333 Munich, Germany, registration number MSM 38039
-
How to cite: Rewitzer, C., Hochleitner, R., Grey, I.E., Kampf, A.R., Boer, S. and MacRae, C.M. (2023) Regerite, IMA 2023-028. CNMNC Newsletter 74; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2023.54
IMA No. 2023-029
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Viskontite
-
Pb5Cu2(SO4)3(SeO3)(OH)6
-
Vkt
-
Western paleo-fumarole field, Mountain 1004, Tolbachik volcano, Kamchatka peninsula, Far-Eastern Region, Russia
-
Igor V. Pekov*, Sergey N. Britvin, Atali A. Agakhanov, Anna G. Turchkova and Pavel S. Zhegunov
-
*E-mail: igorpekov@mail.ru
-
The selenite analogue of caledonite
-
Orthorhombic: Pmn21; structure determined
-
a = 20.6265(4), b = 7.2040(1), c = 6.5220(1) Å
-
6.22(56), 4.73(100), 3.261(62), 3.155(89), 3.109(83), 2.857(31), 2.806(48), 2.074(29)
-
Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 6008/1
-
How to cite: Pekov, I.V., Britvin, S.N., Agakhanov, A.A., Turchkova, A.G. and Zhegunov, P.S. (2023) Viskontite, IMA 2023-029. CNMNC Newsletter 74; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2023.54
IMA No. 2023-030
-
Wangkuirenite
-
Pb3Cl2(SeO3)2
-
Wgk
-
Baccu Locci mine, near Villaputzu, Sardinia, Italy (39°32’38” N, 9°32’04” E)
-
Hexiong Yang*, Xiangping Gu, Ronald B. Gibbs and Robert T. Downs
-
*E-mail: hyang@arizona.edu
-
Known synthetic analogue
-
Monoclinic: C2/c; structure determined
-
a = 13.4266(4), b = 5.5826(2), c = 13.0024(4) Å, β = 94.287(2)°
-
6.478(37), 3.974(57), 3.484(50), 3.146(100), 2.889(28), 2.791(45), 2.706(61), 2.008(43)
-
Type material is deposited in the collections of the University of Arizona Alfie Norville Gem & Mineral Museum, 115 N Church Ave Ste 121, Tucson, AZ 85701, USA, catalogue no. 22731 (holotype), and the RRUFF Project, deposition no. R220047 (cotype)
-
How to cite: Yang, H., Gu, X., Gibbs, R.B. and Downs, R.T. (2023) Wangkuirenite, IMA 2023-030. CNMNC Newsletter 74; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2023.54
IMA No. 2023-031
-
Paulišite
-
Ca2Zn(CO3)3⋅2H2O
-
Plš
-
Staročeské Lode (1st level), adit Ch151, ca. 20 m north of the historical shaft Šafary, Kaňk, near Kutná Hora, central Bohemia, Czech Republic (49°58’43.23” N, 15°16’06.62” E)
-
Jiří Sejkora*, Cristian Biagioni, Zdeněk Dolníček, Radek Škoda and Jana Ederová
-
*E-mail: jiri.sejkora@nm.cz
-
New structure type
-
Monoclinic: Cc; structure determined
-
a = 14.3484(1), b = 10.624(1), c = 6.3007(6) Å, β = 115.205(4)°
-
8.226(100), 6.492(99), 4.112(18), 3.246(35), 3.085(19), 2.935(15), 2.797(14), 2.458(20)
-
Type material is deposited in the collections of the Department of Mineralogy and Petrology, National Museum, Cirkusová 1740, 19300 Prague 9, Czech Republic, catalogue number P1P 9/2023, and the Museo di Storia Naturale, Università di Pisa, Via Roma 79, Calci (PI), catalogue number 20064
-
How to cite: Sejkora, J., Biagioni, C., Dolníček, Z., Škoda, R. and Ederová, J. (2023) Paulišite, IMA 2023-031. CNMNC Newsletter 74; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2023.54
NOMENCLATURE/CLASSIFICATION PROPOSALS APPROVED IN JUNE 2023
IMA 22-K-bis – Establishment of the paulkerrite group
(Ian E. Grey, Ferdinando Bosi, William G. Mumme and Stephanie Boer)
Proposal 22-K-bis is accepted, and the paulkerrite group is defined. The general formula may be written as A 2M12M22M3(PO4)4X 2(H2O)10⋅4H2O, where A = K, H2O; M = Mg, Mn2+, Al, Fe3+, Ti; X = O, OH, F. The following species belong to the group: paulkerrite, mantienneite, benyacarite, pleysteinite and hochleitnerite.
NOMENCLATURE/CLASSIFICATION PROPOSALS APPROVED IN JULY 2023
Establishment of the dongchuanite group
(Guowu Li, Ningyue Sun and Yuan Xue)
The dongchuanite group has been established. The general formula may be written as A 4VIB IVB 2(T1O4)2(T2O4)2Y 2. Currently there are the following species: dongchuanite (VIB = Zn, T1 = P), cuprodongchuanite (VIB = Cu, T1 = P), zheshengite (VIB = Zn, T1 = As), and cuprozheshengite (VIB = Cu, T1 = As). In all of them it is invariably A = Pb, IVB = Zn, T2 = P, Y = (OH).