Newsletter 54

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

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 FEBRUARY 2020

IMA No. 2018-121a

• Pošepnýite

• (Cu⁺₃□₃)_Σ6(Hg²⁺₄Cu⁺₂)_Σ6Sb₄(Se_12.5□_0.5)_Σ13

• At the mine dump of shaft No. 16 – Háje, near Příbram, Central Bohemia, Czech Republic (49°40′33.894″N, 14°3′29.922″E)

• Pavel Škácha*, Jiří Sejkora, Jakub Plášil and Emil Makovicky

• *E-mail: [email protected]

• Tetrahedrite group

• Cubic: I $ {\bar 4} $3m; structure determined

• a = 10.964(1) Å

• 4.476(11), 3.165(100), 2.930(24), 2.002(16), 1.938(65), 1.778(13), 1.653(31), 1.119(12)

• Type material is deposited in the mineralogical collections of the National Museum, Department of Mineralogy and Petrology, Cirkusová 1740, Praha 9, Czech Republic, catalogue number P1P 15/2015, and the Mining Museum, Hynka Kličky Place 293, Příbram VI, Březové Hory, Czech Republic, catalogue number 1/2016

• How to cite: Škácha, P., Sejkora, J., Plášil, J. and Makovicky, E. (2020) Pošepnýite, IMA 2018-121a. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2018-145

• Hydroxyplumbopyrochlore

• (Pb_1.5□_0.5)Nb₂O₆(OH)

• Jabal Sayid peralkaline granitic complex, Saudi Arabia (23°49′28.72″N, 40°56′30.93″E)

• Ting Li*, Ziying Li, Guang Fan, Honghai Fan, Jun Zhong, Naser S. Jahdali, Mingkuan Qin, Abdullah M. Jehani, Fenggang Wang and Mubarak M. Nahdi

• *E-mail: [email protected]

• Pyrochlore supergroup

• Cubic: Fd $ {\bar 3} $m; structure determined

• a = 10.558(2) Å

• 6.051(8), 3.043(100), 2.636(42), 1.862(36), 1.591(43), 1.521(8), 1.320(6), 1.183(12)

• Type material is deposited in the mineralogical collections of the Geological Museum of China, No. 16 Yangrou Hutong, Xisi, Beijing 100031, People's Republic of China, catalogue number M13239

• How to cite: Li, T., Li, Z., Fan, G., Fan, H., Zhong, J., Jahdali, N.S., Qin, M., Jehani, A.M., Wang, F. and Nahdi, M.M. (2020) Hydroxyplumbopyrochlore, IMA 2018-145. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-092

• Stangersite

• SnGeS₃

• In the central part of a burning coal mine dump of the abandoned Kateřina mine, Radvanice village, ca. 12 km E of Trutnov, northern Bohemia, Czech Republic (50°33′39.0″N, 16°03′56.2″E)

• Jiří Sejkora*, Emil Makovicky, Tonci Balić-Žunić and Peter Berlepsch

• *E-mail: [email protected]

• Known synthetic analogue

• Monoclinic: P2₁/c; structure determined

• a = 7.270(1), b = 10.197(2), c = 6.846(1) Å, β = 105.34(3)°

• 7.006(100), 4.135(49), 3.077(47), 2.810(29), 2.776(38), 2.699(69), 2.121(31), 1.724(35)

• Type material is deposited in the mineralogical collections of the Department of Mineralogy and Petrology, National Museum in Prague, Cirkusová 1740, 19300 Praha 9, Czech Republic, catalogue number P1P 8/2000

• How to cite: Sejkora, J., Makovicky, E., Balić-Žunić, T. and Berlepsch, P. (2020) Stangersite, IMA 2019-092. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-101

• Meifuite

• KFe₆(Si₇Al)O₁₉(OH)₄Cl₂

• Fe-Cu ore deposit of Yinachang, Yangtze Block, China

• Shiyun Jin, Xiaochun Li and Huifang Xu*

• *E-mail: [email protected]

• Chemically and structurally related to annite

• Triclinic: P $ {\bar 1} $; structure determined

• a = 22.777(1), b = 9.5553(5), c = 14.3282(8) Å, α = 99.258(4), β = 136.750(3), γ = 89.899(4)°

• 9.56(100), 4.78(25), 3.19(19), 2.79(20), 2.69(15), 2.55(37), 2.44(13), 2.23(15)

• Type material is deposited in the mineralogical collections of the Geology Museum, Department of Geoscience, University of Wisconsin, 1215 West Dayton Street, Madison, WI 53706, USA, catalogue numbers UWGM 6859 (holotype), UWGM 6860 and UWGM 6861 (cotypes)

• How to cite: Jin, S., Li, X. and Xu, H. (2020) Meifuite, IMA 2019-101. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-102

• Dutkevichite-(Ce)

• NaZnBa₂Ce₂Ti₂Si₈O₂₆F⋅H₂O

• In the moraine of Darai-Pioz glacier, Alai mountain range, Tien-Shan, Rashtskii district, Tajikistan (39°30′N, 70°40′E)

• Atali A. Agakhanov*, Leonid A. Pautov, Natalia V. Zubkova, Andrey A. Zolotarev, Anatoly V. Kasatkin, Vladimir Y. Karpenko, Igor V. Pekov, Vitaliya A. Agakhanova, Vyacheslav A. Muftakhov, Radek Škoda and Sergey N. Britvin

• *E-mail: [email protected]

• The Zn analogue of byelorussite-(Ce)

• Orthorhombic: Ama2; structure determined

• a = 22.238(5), b = 10.497(3), c = 9.649(2) Å

• 4.420(73), 4.281(35), 3.287(53), 3.203(39), 2.992(100), 2.939(56), 2.779(47), 2.606(40)

• 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 5281/1

• How to cite: Agakhanov, A.A., Pautov, L.A., Zubkova, N.V., Zolotarev, A.A., Kasatkin, A.V., Karpenko, V.Y., Pekov, I.V., Agakhanova, V.A., Muftakhov, V.A., Škoda, R. and Britvin, S.N. (2020) Dutkevichite-(Ce), IMA 2019-102. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-105

• Niasite

• Ni²⁺_4.5(AsO₄)₃

• Johanngeorgenstadt, Erzgebirgskreis, Saxony, Germany

• Anthony R. Kampf*, Barbara P. Nash, Jakub Plášil, Jason B. Smith and Mark N. Feinglos

• *E-mail: [email protected]

• Isostructural with jeffbenite

• Tetragonal: I $ {\bar 4} $2d; structure determined

• a = 6.8046(8), c = 18.619(1) Å

• 3.274(18), 3.008(25), 2.752(100), 2.330(10), 1.706(21), 1.678(28), 1.446(13), 1.412(10)

• Cotype material is deposited in the mineralogical collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue number 74203, and the American Museum of Natural History, Central Park West @ 79th Street, New York City, NY 10024, USA, catalogue number 17956

• How to cite: Kampf, A.R., Nash, B.P., Plášil, J., Smith, J.B. and Feinglos, M.N. (2020) Niasite, IMA 2019-105. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-106

• Dobrovolskyite

• Na₄Ca(SO₄)₃

• Second scoria cone of the Northern Breakthrough of the Great Tolbachik fissure eruption, Tolbachik volcano, Kamchatka, Far-Eastern Region, Russia (55°41′N, 160°14′E, 1200 m asl)

• Andrey P. Shablinskii*, Stanislav K. Filatov, Lidiya P. Vergasova, Svetlana V. Moskaleva, Eugeniya Y. Avdontseva and Rimma S. Bubnova

• *E-mail: [email protected]

• Chemically and structurally related to bubnovaite

• Trigonal: R3; structure determined

• a = 15.7223(2), c = 22.0160(5) Å

• 11.58(40), 5.79(22), 3.86(88), 3.67(32), 3.11(24), 3.09(26), 2.855(50), 2.682(100)

• Type material is deposited in the collections of the Saint-Petersburg State University mineralogical museum, University Emb. 7/9, St. Petersburg 199034, Russia, catalogue number 1/19829

• How to cite: Shablinskii, A.P., Filatov, S.K., Vergasova, L.P., Moskaleva, S.V., Avdontseva, E.Y. and Bubnova, R.S. (2020) Dobrovolskyite, IMA 2019-106. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-108

• Keplerite

• Ca₉(Ca_0.5□_0.5)Mg(PO₄)₇

• Marjalahti meteorite, fell June 01, 1902 at the northern coast of Lake Ladoga, Karelia, Russia (61°30′N, 30°30′E – holotype); Hatrurim Formation, near Arad, Negev Desert, Israel (31°13′58″N, 35°16′2″E – cotype)

• Sergey N. Britvin*, Irina O. Galuskina, Natalia S. Vlasenko, Oleg S. Vereshchagin, Vladimir N. Bocharov, Maria G. Krzhizhanovskaya, Vladimir V. Shilovskikh, Evgeny V. Galuskin, Yevgeny Vapnik and Edita V. Obolonskaya

• *E-mail: [email protected]

• The Mg analogue of matyhite

• Trigonal: R3c; structure determined

• a = 10.3330(4), c = 37.067(2) Å

• 5.166(25), 3.424(24), 3.177(46), 2.854(100), 2.583(64), 1.915(22), 1.877(19), 1.712(28)

• Type material is deposited in the collections of the Mining Museum, Saint Petersburg Mining University, St. Petersburg, Russia, catalogue number MM74/2-1

• How to cite: Britvin, S.N., Galuskina, I.O., Vlasenko, N.S., Vereshchagin, O.S., Bocharov, V.N., Krzhizhanovskaya, M.G., Shilovskikh, V.V., Galuskin, E.V., Vapnik, Y. and Obolonskaya, E.V. (2020) Keplerite, IMA 2019-108. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-111

• Tilkerodeite

• Pd₂HgSe₃

• Eskaborn adit (60-m level, 5 m N of the blind shaft IV), Tilkerode, Harz Mountains, Germany (51°38′3″N, 11°19′4″E)

• Chi Ma* and Hans-Jürgen Förster

• *E-mail: [email protected]

• The Pd analogue of jacutingaite

• Trigonal: P $ {\bar 3} $m1

• a = 7.325, c = 5.288 Å

• 5.288(9), 2.720(100), 2.031(34), 1.831(37), 1.519(19), 1.360(10), 1.270(10), 1.169(15)

• Type material is deposited in the collections of the Mineralogical Institute, Technische Universität Bergakademie Freiberg, Freiberg, Germany, inventory number MiSa84670

• How to cite: Ma, C. and Förster, H.-J. (2020) Tilkerodeite, IMA 2019-111. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2018-073b

• Fleetite

• Cu₂RhIrSb₂

• Miass Placer Zone, close to the city of Miass, Chelyabinsk oblast, southern Urals, Russia

• Andrei Y. Barkov*, Luca Bindi, Nobumichi Tamura, Robert F. Martin, Chi Ma, Björn Winkler, Gennadiy I. Shvedov and Wolfgang Morgenroth

• *E-mail: [email protected]

• New structure type

• Cubic: Fd $ {\bar 3} $m; structure determined

• a = 11.6682(8) Å

• 6.7(75), 4.13(100), 3.52(30), 2.679(20), 2.380(50), 2.064(40), 1.969(15), 1.556(20)

• Type material is deposited in the mineralogical collections of the State Museum of Geology of Central Siberia, 13 Partizana Zheleznyaka Street, 660021 Krasnoyarsk, Russia, catalogue number 1/41/11002

• How to cite: Barkov, A.Y., Bindi, L., Tamura, N., Martin, R.F., Ma, C., Winkler, B., Shvedov, G.I. and Morgenroth, W. (2020) Fleetite, IMA 2018-073b. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2018-132a

• Chukochenite

• LiAl₅O₈

• Xianghualing skarn, Linwu County, Hunan Province, China (25°26′N, 112°34′E)

• Can Rao*, Xiangping Gu, Rucheng Wang, Qunke Xia, Yuanfeng Cai, Chuanwan Dong, Frédéric Hatert and Yantao Hao

• *E-mail: [email protected]

• New structure type

• Orthorhombic: Imma; structure determined

• a = 5.642(1), b = 16.827(2), c = 8.014(1) Å

• 2.404(53), 1.538(77), 1.412(100), 1.256(52), 1.068(36), 1.040(61), 0.999(59), 0.942(35)

• Type material is deposited in the mineralogical collections of the Geological Museum of China, No. 15 Yangrou Hutong, Xisi, Beijing 100031, People's Republic of China, catalogue number M13818

• How to cite: Rao, C., Gu, X., Wang, R., Xia, Q., Cai, Y., Dong, C., Hatert, F. and Hao, Y. (2020) Chukochenite, IMA 2018-132a. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2018-026b

• Poirierite

• Mg₂SiO₄

• Suizhou meteorite, fell at Xihe, Zengdu District, Suizhou, Hubei, China (31°37′N, 113°28′E – holotype); Tenham meteorite, fell at Tenham Station, Windorah, Barcoo Shire, Queensland, Australia (25°43′59″S, 142°57′0″E – cotype); Miami meteorite, Texas, USA (35°40′N, 100°36′W)

• Naotaka Tomioka*, Takuo Okuchi, Toshiaki Iitaka, Masaaki Miyahara, Luca Bindi and Xiande Xie

• *E-mail: [email protected]

• A polymorph of forsterite, wadsleyite and ringwoodite

• Orthorhombic: Pmma; structure determined

• a = 5.801(11), b = 2.905(9), c = 8.411(16) Å

• 3.405(54), 2.804(71), 2.742(62), 2.482(95), 2.053(82), 1.469(100), 1.453(32), 1.450(32)

• Type material is deposited in the mineralogical collections of the Museo di Storia Naturale, Università di Firenze, Via La Pira 4, I-50121, Firenze, Italy, catalogue number 3238/I (holotype – Suizhou), and the Department of Geology and Paleontology, National Museum of Nature and Science, Tokyo, Japan, sample number NSM-MF15125 (cotype – Tenham)

• How to cite: Tomioka, N., Okuchi, T., Iitaka, T., Miyahara, M., Bindi, L. and Xie, X. (2020) Poirierite, IMA 2018-026b. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

NEW MINERAL PROPOSALS APPROVED IN MARCH 2020

IMA No. 2019-084

• Zaykovite

• Rh₃Se₄

• Kazan gold-bearing placer, Gogino placer zone, 100–150 km SSE from the city of Magnitogorsk, Chelyabinsk region, Russia (52°42′00″N, 60°26′27″E)

• Elena V. Belogub*, Sergey N. Britvin, Vladimir V. Shilovskikh, Leonid A. Pautov, Vasiliy A. Kotlyarov and Elisaveta V. Zaykova

• *E-mail: [email protected]

• The Se analogue of kingstonite

• Monoclinic: C2/m; structure determined

• a = 10.877(1), b = 11.192(1), c = 6.4796(6) Å, β = 108.887(2)°

• 5.43(37), 3.275(75), 3.199(100), 3.061(87), 2.568(62), 2.545(41), 3.413(34), 1.697(34)

• 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 5395/1

• How to cite: Belogub, E.V., Britvin, S.N., Shilovskikh, V.V., Pautov, L.A., Kotlyarov, V.A. and Zaykova, E.V. (2020) Zaykovite, IMA 2019-084. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-110

• Oxycalciomicrolite

• Ca₂Ta₂O₇

• Fumal pegmatite, Nazareno, Minas Gerais, Brazil (21°04′08.23″S, 44°33′59.63″W)

• Victor Hugo Riboura Menezes da Silva*, Reiner Neumann, Ciro Alexandre Ávila, Fabiano Richard Leite Faulstich, Felipe Emerson André Alves and Filipe Barra de Almeida

• *E-mail: [email protected]

• Pyrochlore supergroup

• Cubic: Fd $ {\bar 3} $m; structure determined

• a = 10.3803(6) Å

• 6.023(89), 3.145(44), 3.011(100), 2.608(25), 2.008(14), 1.844(48), 1.763(11), 1.573(33)

• Type material is deposited in the mineralogical collections of the Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista s/n, 20940-040 Rio de Janeiro, Brazil, registration number MN-7601-M

• How to cite: Menezes da Silva, V.H.R., Neumann, R., Ávila, C.A., Faulstich, F.R.L., Alves, F.E.A. and de Almeida, F.B. (2020) Oxycalciomicrolite, IMA 2019-110. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-113

• Uvite

• CaMg₃(Al₅Mg)(Si₆O₁₈)(BO₃)₃(OH)₃(OH)

• Facciatoia quarry, S. Piero in Campo (LI), Elba, Tuscany, Italy (42°45′04.55″N, 10°12′50.89″E)

• Ferdinando Bosi*, Cristian Biagioni, Federico Pezzotta, Henrik Skobgy, Ulf Hålenius, Jan Cempírek, Frank C. Hawthorne, Aaron J. Lussier, Yassir A. Abdu, Maxwell C. Day, Mostafa Fayek, Christine M. Clark, Joel D. Grice and Darrell J. Henry

• *E-mail: [email protected]

• Tourmaline supergroup

• Trigonal: R3m; structure determined

• a = 15.952(1), c = 7.2222(5) Å

• 4.237(49), 3.994(51), 3.497(57), 2.973(88), 2.584(100), 2.047(53), 1.925(37), 1.666(26)

• Type material is deposited in the mineralogical collections of the Museo Civico di Storia Naturale, Corso Venezia 55, 20121 Milano, Italy, catalogue number M38848, and the Museo di Storia Naturale, Università di Pisa, Via Roma 79, 56011 Calci (PI), Italy, catalogue number 19911

• How to cite: Bosi, F., Biagioni, C., Pezzotta, F., Skobgy, H., Hålenius, U., Cempírek, J., Hawthorne, F.C., Lussier, A.J., Abdu, Y.A., Day, M.C., Fayek, M., Clark, C.M., Grice, J.D. and Henry, D.J. (2020) Uvite, IMA 2019-113. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-114

• Rhabdoborite-(Mo)

• Mg₁₂Mo⁶⁺_1.33O₆(BO₃)₆F₂

• Arsenatnaya fumarole, second scoria cone of the Northern Breakthrough of the Great Tolbachik fissure eruption, Tolbachik volcano, Kamchatka, Far-Eastern Region, Russia (55°41′N, 160°14′E, 1200 m asl)

• Igor V. Pekov*, Natalia V. Zubkova, Natalia N. Koshlyakova, Dmitry I. Belakovskiy, Atali A. Agakhanov, Sergey N. Britvin, Evgeny G. Sidorov and Dmitry Y. Pushcharovsky

• *E-mail: [email protected]

• Isostructural with rhabdoborite-(V) and rhabdoborite-(W)

• Hexagonal: P6₃; structure determined

• a = 10.6304(3), c = 4.5637(2) Å

• 9.20(100), 5.312(32), 3.483(73), 2.769(70), 2.549(40), 2.228(72), 1.702(61), 1.475(37)

• 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 5464/1

• How to cite: Pekov, I.V., Zubkova, N.V., Koshlyakova, N.N., Belakovskiy, D.I., Agakhanov, A.A., Britvin, S.N., Sidorov, E.G. and Pushcharovsky, D.Y. (2020) Rhabdoborite-(Mo), IMA 2019-114. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-115

• Popugaevaite

• Ca₃[B₅O₆(OH)₆]FCl₂⋅8H₂O

• International diamond mine, Internatsional'naya kimberlite pipe, Irelyakh river basin, 10 km SW of the city of Mirny, Sakha Republic, Siberia, Russia

• Igor V. Pekov*, Natalia V. Zubkova, Ilya I. Chaikovskiy, Nikita V. Chukanov, Dmitry I. Belakovskiy, Vasiliy O. Yapaskurt, Yana V. Bychkova, Dmitry A. Ksenofontov, Elena P. Chirkova, Sergey N. Britvin and Dmitry Y. Pushcharovsky

• *E-mail: [email protected]

• The F analogue of brianroulstonite

• Monoclinic: Pn; structure determined

• a = 8.705(1), b = 8.102(1), c = 14.812(2) Å, β = 91.367(7)°

• 8.12(100), 7.13(12), 4.058(27), 3.577(15), 2.936(10), 2.834(16), 2.283(10), 2.104(9)

• 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 5465/1

• How to cite: Pekov, I.V., Zubkova, N.V., Chaikovskiy, I.I., Chukanov, N.V., Belakovskiy, D.I., Yapaskurt, V.O., Bychkova, Y.V., Ksenofontov, D.A., Chirkova, E.P., Britvin, S.N. and Pushcharovsky, D.Y. (2020) Popugaevaite, IMA 2019-115. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-116

• Freitalite

• C₁₄H₁₀

• Königin Carola shaft, Freital, near Dresden, Saxony, Germany (51°00′10″N, 13°38′18″E)

• Thomas Witzke*, Martin Schreyer, René Csuk and Herbert Pöllmann

• *E-mail: [email protected]

• Known synthetic analogue (anthracene)

• Monoclinic: P2₁/a; structure determined

• a = 8.5572(9), b = 6.0220(5), c = 11.173(1) Å, β = 124.174(1)°

• 9.252(98), 4.877(19), 4.628(10), 4.587(100), 4.152(7), 3.538(27), 3.434(22), 3.050(20)

• Type material is deposited in the mineralogical collections of the Technische Universität Bergakademie Freiberg, Akademiestrass 6, 09599 Freiberg, Germany, specimens No. MiSa72396 and MiSa84590

• How to cite: Witzke, T., Schreyer, M., Csuk, R. and Pöllmann, H. (2020) Freitalite, IMA 2019-116. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-117

• Shuiskite-(Cr)

• Ca₂CrCr₂[SiO₄][Si₂O₆(OH)](OH)₂O

• Rudnaya underground chromite mine (level 280 m), Glavnoe Saranovskoe deposit, Saranovskaya deposits, Sarany, Middle Urals, Russia

• Inna Lykova*, Dmitry A. Varlamov, Nikita V. Chukanov, Igor V. Pekov, Dmitry I. Belakovskiy, Oleg K. Ivanov, Natalia V. Zubkova and Sergey N. Britvin

• *E-mail: [email protected]

• Pumpellyite group

• Monoclinic: C2/m; structure determined

• a = 19.2436(6), b = 5.9999(2), c = 8.8316(3) Å, β = 97.833(3)°

• 4.759(34), 4.707(36), 3.783(75), 2.913(100), 2.755(52), 2.539(48), 2.470(39), 1.602(35)

• 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 5481/1, and the Canadian Museum of Nature, 240 McLeod Street, Ottawa, ON K2P 2R1, Canada, catalogue number CMNMC 87302

• How to cite: Lykova, I., Varlamov, D.A., Chukanov, N.V., Pekov, I.V., Belakovskiy, D.I., Ivanov, O.K., Zubkova, N.V. and Britvin, S.N. (2020) Shuiskite-(Cr), IMA 2019-117. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-118

• Alexkuznetsovite-(Ce)

• Ce₂Mn(CO₃)(Si₂O₇)

• Mochalin Log REE deposit, 14 km N of the city of Kyshtym, Chelyabinsk Oblast’, Southern Urals, Russia (55°48′42″N, 60°33′46″E)

• Anatoly V. Kasatkin*, Natalia V. Zubkova, Igor V. Pekov, Nikita V. Chukanov, Radek Škoda, Atali A. Agakhanov and Dmitriy I. Belakovskiy

• *E-mail: [email protected]

• The Ce analogue of alexkuznetsovite-(La)

• Monoclinic: P2₁/c; structure determined

• a = 6.5764(4), b = 6.7685(4), c = 18.749(1) Å, β = 108.672(8)°

• 4.145(35), 3.177(26), 2.893(100), 2.797(36), 2.027(24), 1.833(26), 1.808(25), 1.686(20)

• 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 5416/3

• How to cite: Kasatkin, A.V., Zubkova, N.V., Pekov, I.V., Chukanov, N.V., Škoda, R., Agakhanov, A.A. and Belakovskiy, D.I. (2020) Alexkuznetsovite-(Ce), IMA 2019-118. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-120

• Biagioniite

• Tl₂SbS₂

• Museum sample from Hemlo gold deposit, Marathon, Ontario, Canada

• Luca Bindi* and Yves Moëlo

• *E-mail: [email protected]

• Isostructural with dervillite

• Monoclinic: Pc; structure determined

• a = 11.0895(9), b = 14.3124(11), c = 7.9352(6) Å, β = 96.230(8)°

• 3.79(60), 3.68(40), 3.56(100), 3.48(40), 3.37(75), 3.16(49), 3.08(40), 3.03(60)

• Type material is deposited in the mineralogical collections of the Museo di Storia Naturale, Università di Firenze, Via La Pira 4, I-50121, Firenze, Italy, catalogue number 46582/G

• How to cite: Bindi, L. and Moëlo, Y. (2020) Biagioniite, IMA 2019-120. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-121

• Jasonsmithite

• Mn²⁺₄ZnAl(PO₄)₄(OH)(H₂O)₇⋅3.5H₂O

• East dump of the Foote Lithium Company mine, Kings Mountain district, Cleveland Co., North Carolina, USA (35°12′40″N, 81°21′20″W)

• Anthony R. Kampf*, Aaron J. Celestian and Barbara P. Nash

• *E-mail: [email protected]

• New structure type

• Monoclinic: P2₁/c; structure determined

• a = 8.5822(3), b = 13.1770(6), c = 20.304(1) Å, β = 98.485(7)°

• 10.98(43), 10.08(100), 7.95(18), 4.074(19), 3.029(30), 2.846(18), 2.605(29), 2.543(24)

• Type material is deposited in the mineralogical collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue numbers 74374 (holotype), 74375 (cotype) and 74376 (cotype)

• How to cite: Kampf, A.R., Celestian, A.J. and Nash, B.P. (2020) Jasonsmithite, IMA 2019-121. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-122

• Johanngeorgenstadtite

• Ni²⁺_4.5(AsO₄)₃

• Johanngeorgenstadt, Erzgebirgskreis, Saxony, Germany

• Anthony R. Kampf*, Barbara P. Nash and Jakub Plášil

• *E-mail: [email protected]

• Alluaudite supergroup

• Monoclinic: C2/c; structure determined

• a = 11.993(3), b = 12.753(3), c = 6.696(2) Å, β = 113.302(8)°

• 3.514(16), 3.215(48), 3.076(18), 2.748(100), 2.623(20), 1.948(17), 1.661(28), 1.585(16)

• Type material is deposited in the mineralogical collections of the American Museum of Natural History, Central Park West @ 79th Street, New York City, NY 10024, USA, catalogue number 17956

• How to cite: Kampf, A.R., Nash, B.P. and Plášil, J. (2020) Johanngeorgenstadtite, IMA 2019-122. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-123

• Grguricite

• CaCr₂(CO₃)₂(OH)₄⋅4H₂O

• Adeghoual mine, northern outskirts of the town of Mibladen, Midelt region, Morocco (32°46′00″N, 4°37′59″W)

• Mike S. Rumsey*, Mark D. Welch, John Spratt and Annette Kleppe

• *E-mail: [email protected]

• The Cr analogue af alumohydrocalcite

• Triclinic: P$ {\bar 1} $

• a = 5.724(2), b = 6.5304(9), c = 14.646(4) Å, α = 81.682(1), β = 83.712(2), γ = 86.365(2)°

• 7.208(45), 6.454(63), 6.222(100), 4.039(40), 3.227(87), 2.883(58), 2.648(47), 2.589(64)

• Type material is deposited in the mineralogical collections of the Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom, specimen # BM2019,5

• How to cite: Rumsey, M.S., Welch, M.D., Spratt, J. and Kleppe, A. (2020) Grguricite, IMA 2019-123. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-124

• Chukotkaite

• AgPb₇Sb₅S₁₅

• In the valley of Levyi Vulvyveem river, Amguema river basin, Iultin District, Chukotka Autonomous Okrug, Russia

• Anatoly V. Kasatkin*, Jakub Plášil, Emil Makovicky, Radek Škoda, Atali A. Agakhanov, Ilya I. Chaikovskiy, Evgeny A. Vlasov and Igor V. Pekov

• *E-mail: [email protected]

• New structure type

• Monoclinic: P2₁/c; structure determined

• a = 4.0575(3), b = 35.950(1), c = 19.221(2) Å, β = 90.525(8)°

• 3.52(100), 3.38(50), 3.13(50), 2.96(30), 2.82(25), 2.26(15), 2.23(15), 1.91(50)

• 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 5467/1

• How to cite: Kasatkin, A.V., Plášil, J., Makovicky, E., Škoda, R., Agakhanov, A.A., Chaikovskiy, I.I., Vlasov, E.A. and Pekov, I.V. (2020) Chukotkaite, IMA 2019-124. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-125

• Luboržákite

• Mn₂AsSbS₅

• Vorontsovskoe gold deposit, ca. 13 km S of the city of Krasnotur'insk, Sverdlovskaya Oblast’, Northern Urals, Russia (59°66′29″N, 60°19′61″E)

• Anatoly V. Kasatkin*, Jakub Plášil, Emil Makovicky, Radek Škoda, Atali A. Agakhanov and Sergey Y. Stepanov

• *E-mail: [email protected]

• Pavonite homologous series

• Monoclinic: C2/m; structure determined

• a = 12.5077(6), b = 3.8034(2), c = 16.0517(8) Å, β = 94.190(4)°

• 3.486(50), 3.286(50), 3.262(36), 2.806(39), 2.788(57), 2.690(100), 1.904(37), 1.902(36)

• 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 5498/1

• How to cite: Kasatkin, A.V., Plášil, J., Makovicky, E., Škoda, R., Agakhanov, A.A. and Stepanov, S.Y. (2020) Luboržákite, IMA 2019-125. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-126

• Cuyaite

• Ca₂Mn³⁺As³⁺₁₄O₂₄Cl

• NW side of the steep Camarones Valley, ca. 9 km NE of the village of Cuya, Arica Province, Chile

• Anthony R. Kampf*, Barbara Nash, Maurizio Dini and Arturo A. Molina Donoso

• *E-mail: [email protected]

• New structure type

• Monoclinic: Pn; structure determined

• a = 14.7231(6), b = 5.5871(2), c = 17.418(1) Å, β = 112.451(8)°

• 4.73(45), 3.162(100), 3.035(28), 3.004(37), 2.931(90), 2.799(28), 1.854(23), 1.832(26)

• Type material is deposited in the mineralogical collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA; catalogue number 74462

• How to cite: Kampf, A.R., Nash, B., Dini, M. and Molina Donoso, A.A. (2020) Cuyaite, IMA 2019-126. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

IMA No. 2019-127

• Brattforsite

• Mn₁₉As₁₂O₃₆Cl₂

• Brattforsgruvan mine, Filipstad municipality, Värmland, Sweden (59°49′59″N, 14°07′25″E, 230 m asl)

• Dan Holtstam*, Cristian Biagioni and Ulf Hålenius

• *E-mail: [email protected]

• The Cl analogue of magnussonite, with lower symmetry

• Monoclinic: C2/c; structure determined

• a = 27.7223(9), b = 19.5763(7), c = 19.5806(7) Å, β = 134.541(1)°

• 2.843(100), 2.828(99), 2.471(16), 2.448(28), 1.746(16), 1.739(25), 1.731(32), 1.475(16)

• Type material is deposited in the mineralogical collections of the Department of Geosciences, Swedish Museum of Natural History, Box 50007, SE-10405 Stockholm, Sweden, collection number GEO-NRM #19100303, and the Natural History Museum, University of Pisa, Via Roma 79, Calci (PI), Italy, catalogue number 19912

• How to cite: Holtstam, D., Biagioni, C. and Hålenius, U. (2020) Brattforsite, IMA 2019-127. CNMNC Newsletter No. 54; Mineralogical Magazine, 84, https://doi.org/10.1180/mgm.2020.21

NOMENCLATURE/CLASSIFICATION PROPOSALS APPROVED IN FEBRUARY 2020

Arctite supergroup

The arctite supergroup has been established; it currently includes nine mineral species. The supergroup is divided into the zadovite group (alternation of tetrahedral layers and antiperovskite layers – TA) and the arctite group (alternation of tetrahedral layers and triple antiperovskite layers – TA ³).

Fillowite group

The fillowite group has been established; it currently includes four mineral species. The chemical formulae of the minerals of the fillowite group have been uniformed, based on 9 (PO₄) groups per formula unit, as follows: fillowite, Na₃CaMn²⁺₁₁(PO₄)₉; johnsomervilleite, Na₃CaFe²⁺₁₁(PO₄)₉; chladniite, Na₃CaMg₁₁(PO₄)₉; galileiite, Na₃Fe²⁺Fe²⁺₁₁(PO₄)₉. Stornesite-(Y) has been discredited as it is equivalent to Y-bearing chladniite.

Magnetoplumbite group

The magnetoplumbite group has been established; it currently includes eleven mineral species. Minerals of the magnetoplumbite group have the general formula AB ₁₂O₁₉. The group is divided into subgroups, based on the dominant A cation: magnetoplumbite subgroup (A = Pb), hawthorneite subgroup (A = Ba), and hibonite subgroup (A = Ca). Hibonite-(Fe) has been renamed to chihuahuaite.

Walentaite group

The walentaite group has been established; it currently includes four mineral species. Minerals of the walentaite group have the general formula [(A1,A1′,A2,□)(H₂O)n][BxAs³⁺_3–xM1(M2)₂(TO ₄)₂(O,OH)₇]. The group is divided into subgroups based on the dominant T cation: walentaite subgroup (T = P), and halilsarpite subgroup (T = As).

NOMENCLATURE/CLASSIFICATION PROPOSALS APPROVED IN MARCH 2020

IMA 19-I: Redefinition of fairbankite

Proposal 19-I is accepted, and fairbankite is redefined. The previously accepted formula was Pb²⁺Te⁴⁺O₃. Now it has been proven that the sulfate group is an essential constituent and the formula has been changed to Pb²⁺₁₂(Te⁴⁺O₃)₁₁(SO₄).

Renaming of shuiskite

After the approval of shuiskite-(Cr) (IMA No. 2019-117; see above), and considering that the nomenclature of the pumpellyite group is based on suffixes, it was decided to change the name of the mineral shuiskite to shuiskite-(Mg). The rationale in the nomenclature of the pumpellyite group is that the root-name depends on the dominant - always trivalent - cation at M2, whereas the suffix depends on the dominant cation at M1. Currently the root-names are as follows: pumpellyite (M2 = Al), julgoldite (M2 = Fe³⁺), shuiskite (M2 = Cr); okhotskite (M2 = Mn³⁺), poppiite (M2 = V³⁺). The valid species are as follows: pumpellyite-(Mg), pumpellyite-(Fe²⁺), pumpellyite-(Fe³⁺), pumpellyite-(Mn²⁺), pumpellyite-(Al), julgoldite-(Fe²⁺), julgoldite-(Fe³⁺), julgoldite-(Mg), shuiskite-(Mg), shuiskite-(Cr), okhotskite and poppiite. The latter two minerals are (still) without suffix as they stand alone with their root-name.