Newsletter 70

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 web site.

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 OCTOBER 2022

IMA No. 2018-146a

• Borzęckiite

• Pb(UO₂)₃(SeO₃)₂O₂⋅3H₂O

• Bzc

• On dumps near the No. 16 shaft of the Miedzianka mine, Miedzianka village, Janowice Wielkie commune, Jelenia Góra District, Lower Silesia, Poland (50°52’42” N, 15°56’25” E)

• Rafał Siuda, Łukasz Kruszewski and Travis A. Olds*

• *E-mail: [email protected]

• Structurally related to marthozite, guilleminite and larisaite

• Orthorhombic: P2₁nm; structure determined

• a = 7.00(2), b = 7.13(1), c = 17.10(4) Å

• 8.545(72), 7.101(100), 3.503(48), 3.145(31), 3.064(38), 1.955(30), 1.765(19), 1.298(15)

• Type material is deposited in the collections of the S.J. Thugutt Geological Museum, Faculty of Geology, University of Warsaw, ul. Żwirki i Wigury 93, 02-089 Warsaw, Poland, catalogue number MWG UW 009763

• How to cite: Siuda, R., Kruszewski, Ł. and Olds, T.A. (2023) Borzęckiite, IMA 2018-46a. CNMNC Newsletter 70; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2021-050a

• Nioboixiolite-(Mn²⁺)

• (Nb_0.67Mn²⁺_0.33)O₂

• Nbix-Mn

• Sosedka granitic pegmatite vein, Malkhan pegmatite field, Krasnochikoisky District, Zabaikalsky Krai, Siberia, Russia (50°39’06” N, 109°53’14” E)

• Nikita V. Chukanov*, Igor V. Pekov, Natalia V. Zubkova, Vasiliy O. Yapaskurt, Yulia S. Shelukhina, Sergey N. Britvin and Dmitry Y. Pushcharovsky

• *E-mail: [email protected]

• The Nb-dominant analogue of ixiolite-(Mn²⁺)

• Orthorhombic: Pbcn; structure determined

• a = 4.7559(5), b = 5.7318(5), c = 5.1344(4) Å

• 3.662(29), 2.984(100), 2.505(21), 1.775(21), 1.748(28), 1.726(35), 1.553(20), 1.463(30)

• 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 5721/1

• How to cite: Chukanov, N.V., Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Shelukhina, Y.S., Britvin, S.N. and Pushcharovsky, D.Y. (2023) Nioboixiolite-(Mn²⁺), IMA 2021-050a. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-035

• Ikorskyite

• KMn³⁺(Si₄O₁₀)⋅3H₂O

• Iko

• Kirov underground mine (horizon +252 m), Mt. Kukisvumchorr, Khibiny massif, Kola peninsula, Russia (67°40’ N, 33°43’ E)

• Victor N. Yakovenchuk, Taras L. Panikorovskii, Nataliya G. Konoplyova, Yakov A. Pakhomovsky, Eugeny E. Savchenko, Julia A. Mikhailova, Vladimir N. Bocharov, Dar'ya V. Spiridonova and Sergey V. Krivovichev

• *E-mail: [email protected]

• New structure type

• Monoclinic: P2₁/c; structure determined

• a = 5.0339(4), b = 8.2329(7), c = 13.3484(10) Å, β = 93.953(7)°

• 7.04(55), 4.318(41), 4.185(100), 3.956(24), 3.339(28), 3.095(19), 3.014(30), 2.939(70)

• Type material is deposited in the collections of the Mineralogical Museum, St. Petersburg State University, 7-9 Universitetskaya Emb., St. Petersburg 199034, Russia, catalogue number 1/19651, and the Geological and the Mineralogical Museum, Kola Science Centre of Russian Academy of Sciences, 14 Fersman Street, Apatity 184200, Russia, catalogue number 7538

• How to cite: Yakovenchuk, V.N., Panikorovskii, T.L., Konoplyova, N.G., Pakhomovsky, Y.A., Savchenko, E.E., Mikhailova, J.A., Bocharov, V.N., Spiridonova, D.V. and Krivovichev, S.V. (2023) Ikorskyite, IMA 2022-035. CNMNC Newsletter 69; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-055

• Monazite-(Gd)

• Gd(PO₄)

• Mnz-Gd

• Zimná Voda REE-U-Au vein, Prakovce, Gelnica District, Košice Region, Slovakia (48°46’00” N, 20°54’48” E)

• Martin Ondrejka*, Pavel Uher, Štefan Ferenc, Juraj Majzlan, Kilian Pollok, Stanislava Milovská, Tomáš Mikuš, Alexandra Molnárová, Radek Škoda, Richard Kopáčik, Ľubomír Orovčík and Peter Bačík

• *E-mail: [email protected]

• Monazite group

• Monoclinic: P2₁/n

• a = 6.703(1), b = 6.914(1), c = 6.383(1) Å, β = 103.8(1)°

• 3.450(32), 3.227(68), 3.024(100), 2.804(48), 2.394(54), 2.335(25), 2.140(24), 1.833(28)

• Type material is deposited in the collections of the Department of Mineralogy, Petrology and Economic Geology, Comenius University, Ilkovičova 6, 842 15, Bratislava, Slovakia, catalogue number MMUK7660

• How to cite: Ondrejka, M., Uher, P., Ferenc, Š., Majzlan, J., Pollok, K., Milovská, S., Mikuš, T., Molnárová, A., Škoda, R., Kopáčik, R., Orovčík, L. and Bačík, P. (2023) Monazite-(Gd), IMA 2022-055. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-057

• Bernardevansite

• Al₂(SeO₃)₃⋅6H₂O

• Bev

• El Dragón mine, Antonio Quijarro Province, Potosí Department, Bolivia (19°49’15” S, 65°55’00” W)

• Hexiong Yang*, Xiangping Gu, Robert A. Jenkins, Ronald B. Gibbs and Robert T. Downs

• *E-mail: [email protected]

• A dimorph of alfredopetrovite

• Monoclinic: P2₁/c; structure determined

• a = 16.5016(5), b = 7.7703(2), c = 9.8524(3) Å, β = 98.258(3)°

• 8.147(39), 7.036(100), 3.515(64), 3.385(47), 3.013(29), 2.943(80), 2.769(37), 2.247(20)

• 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 # 22712 (holotype), and the RRUFF Project, deposition # R210010 (cotype)

• How to cite: Yang, H., Gu, X., Jenkins, R.A., Gibbs, R.G. and Downs, R.T. (2023) Bernardevansite, IMA 2022-057. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-058

• Driekopite

• PtBi

• Dkp

• Driekop mine, eastern limb of the Bushveld complex, South Africa (24°32’43.04” S, 30°06’06.94” E)

• Andrew M. McDonald*, Nobumichi Tamura, Louis J. Cabri and Frank Melcher

• *E-mail: [email protected]

• The Pt analogue of sobolevskite, and the Bi analogue of stumpflite

• Hexagonal: P6₃/mmc; structure determined

• a = 4.1993(5), c = 5.6194(6) Å

• 3.637(17), 3.053(92), 2.223(100), 2.010(77), 1.730(17), 1.527(28), 1.235(24), 1.168(18)

• Type material is deposited in the collections of the Canadian Museum of Nature, 1740 Pink Road, Gatineau, QC, Canada, catalogue number CMNMC 90261

• How to cite: McDonald, A.M., Tamura, N., Cabri, L.J. and Melcher, F. (2023) Driekopite, IMA 2022-058. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-059

• Alumolukrahnite

• CaCu²⁺Al(AsO₄)₂(OH)(H₂O)

• Alkr

• Jote mine, Pampa Larga district, Tierra Amarilla, Copiapó Province, Atacama Region, Chile (27°36’30” S, 70°09’23” W)

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

• *E-mail: [email protected]

• Tsumcorite group

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

• a = 5.343(5), b = 5.501(5), c = 7.329(5) Å, α = 67.72(2), β = 69.06(2), γ = 69.42(2)°

• 4.89(86), 3.396(100), 3.196(70), 3.115(70), 2.882(90), 2.714(52), 2.488(82), 1.694(65)

• Cotype material is deposited in the collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue numbers 76256, 76257 and 76258

• How to cite: Kampf, A.R., Mills, S.J., Nash, B., Dini, M. and Molina Donoso, A.A. (2023) Alumolukrahnite, IMA 2022-059. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-060

• Liangjunite

• K₂(Mo₂O₅)(SO₄)₂⋅3H₂O

• Lju

• Freedom #2 mine, about 5.6 km NNE of the town of Marysvale, central part of the Marysvale volcanic field, Piute Co., Utah, USA (38°29’43” N, 112°12’55” W)

• Xiangping Gu*, Hexiong Yang and Michael M. Scott

• *E-mail: [email protected]

• Isostructural with bouškaite

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

• a = 5.48124(8), b = 9.5360(2), c = 14.1235(2) Å, α = 97.401(1), β = 99.906(1), γ = 90.080(1)°

• 13.87(00), 6.921(41), 5.379(98), 4.760(56), 3.936(46), 3.468(57), 3.166(49), 3.000(71)

• 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 # 22719 (holotype), and the RRUFF Project, deposition # R220001 (cotype)

• How to cite: Gu, X., Yang, H. and Scott, M.M. (2023) Liangjunite, IMA 2022-060. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-061

• Cuprodobrovolskyite

• Na₄Cu(SO₄)₃

• Cdvo

• Arsenatnaya 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.)

• Nadezhda V. Shchipalkina*, Igor V. Pekov, Natalia N. Koshlyakova, Dmitry I. Belakovskiy, Natalia V. Zubkova, Atali A. Agakhanov, Sergey N. Britvin and Maria A. Nazarova

• *E-mail: [email protected]

• The Cu-dominant analogue of dobrovolskyite

• Trigonal: R3; structure determined

• a = 15.702(2, c = 22.017(2) Å

• 11.66(38), 7.28(33), 3.859(100), 3.702(36), 3.674(39), 3.086(46), 2.853(99), 2.615(68)

• 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 5881/1

• How to cite: Shchipalkina, N.V., Pekov, I.V., Koshlyakova, N.N., Belakovskiy, D.I., Zubkova, N.V., Agakhanov, A.A., Britvin, S.N. and Nazarova, M.A. (2023) Cuprodobrovolskyite, IMA 2022-061. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-063

• Chenowethite

• Mg(H₂O)₆[(UO₂)₂(SO₄)₂(OH)₂]⋅5H₂O

• Chw

• Blue Lizard mine, White Canyon mining district, San Juan Co., Utah, USA (37°33’26” N, 110°17’44” W – type locality); Green Lizard Mine, White Canyon mining district, San Juan Co., Utah, USA (37°34’37.10” N, 110°17’52.80” W – co-type locality)

• Anthony R. Kampf*, Jakub Plášil, Travis A. Olds, Chi Ma and Joe Marty

• *E-mail: [email protected]

• Structurally related to deliensite

• Orthorhombic: Cmcm; structure determined

• a = 6.9435(6), b = 19.035(2), c = 16.358(1) Å

• 9.54(100), 6.07(80), 4.712(54), 4.535(34), 3.476(41), 3.259(28), 2.928(27), 2.650(32)

• Cotype material is deposited in the collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue numbers 76259 and 76260 (Blue Lizard), and 76261 and 76262 (Green Lizard)

• How to cite: Kampf, A.R., Plášil, J., Olds, T.A., Ma, C. and Marty, J. (2023) Chenowethite, IMA 2022-063. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-064

• Antipovite

• Cu₅O₂(PO₄)₂

• Antp

• Arsenatnaya 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.)

• Oleg I. Siidra*, Evgeny V. Nazarchuk, Leonid A. Pautov, Artem S. Borisov and Mirak A. Mirakov

• *E-mail: [email protected]

• Known synthetic analogue

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

• a = 5.2703(2), b = 5.3020(3), c = 7.6883(4) Å, α = 97.342(4), β = 90.441(4), γ = 111.361(4)°

• 3.902(31), 3.667(34), 3.095(100), 2.974(52), 2.653(87), 2.610(34), 2.540(21), 2380(16)

• 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 5884/1

• How to cite: Siidra, O.I., Nazarchuk, E.V., Pautov, L.A., Borisov, A.S. and Mirakov, M.A. (2023) Antipovite, IMA 2022-064. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-065

• Asagiite

• NiCu₄(SO₄)₂(OH)₆⋅6H₂O

• Asa

• Nakauri mine, Nakauri, Shinshiro city, Mikawa Province, Aichi Prefecture, Japan (34°51’05” N, 137°32’09” E)

• Daisuke Nishio-Hamane*, Takeshi Yajima, Norimasa Shimobayashi, Masayuki Ohnishi and Takefumi Niwa

• *E- mail: [email protected]

• The Ni analogue of ktenasite

• Monoclinic: P2₁/c; structure determined

• a = 5.6095(8), b = 6.1259(7), c = 23.758(3) Å, β = 95.288(4)°

• 11.83(100), 5.912(64), 4.845(55), 3.920(45), 2.953(33), 2.668(57), 2.571(36), 2.142(33)

• Type material is deposited in the collections of the National Museum of Nature and Science, Amakubo, Tsukuba, Ibaraki 305-0005, Japan, specimen number NSM-M49723

• How to cite: Nisio-Hamane, D., Yajima, T., Shimobayashi, N., Ohnishi, M. and Niwa, T. (2023) Asagiite, IMA 2022-065. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-066

• Ruizhongite

• (Ag₂☐)Pb₃Ge₂S₈

• Rzh

• Wusihe Pb-Zn deposit, Hanyuan County, Sichuan Province, China (29°16’27.0” N, 102°53’23.0” E)

• Yumiao Meng and Xiangping Gu*

• *E- mail: [email protected]

• New structure type

• Cubic: I $\overline{4}$3d ; structure determined

• a = 14.0559(2) Å

• 3.755(100), 3.511(76), 2.992(73), 2.482(79), 2.276(46), 2.075(24), 1.784(39), 1.680(25)

• Type material is deposited in the collections of the Geological Museum of China, No. 16, Yangrou Hutong, Xisi, Beijing 100031, People's Republic of China, catalogue number M16138

• How to cite: Meng, Y. and Gu, X. (2023) Ruizhongite, IMA 2022-066. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-067

• Novikovite

• (NH₄)₄(Mo⁶⁺₂Mo⁵⁺₂)₄O₈(SO₄)₅

• Nvi

• Near Ravat kishlak (village), about 100 km north of Dushanbe, Kuhi-Malik area, Fan-Jagnob lignite basin, Tajikistan (39°11’02” N, 68°35’11” E)

• Leonid A. Pautov, Mirak A. Mirakov, Oleg I. Siidra*, Nikita V. Chukanov, Artem S. Borisov, Vladimir Y. Karpenko, Pavel Y. Plechov and Saimudasir Makhmadsharif

• *E- mail: [email protected]

• New structure type

• Monoclinic: P2₁/n; structure determined

• a = 8.936(2), b = 13.210(3), c = 22.555(5) Å, β = 94.484(4)°

• 11.39(51), 8.54(40), 8.46(100), 6.49(20), 6.34(40), 5.70(41), 4.28(23), 3.468(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 5886/1

• How to cite: Pautov, L.A., Mirakov, M.A., Siidra, O.I., Chukanov, N.V., Borisov, A.S., Karpenko, V.Y., Plechov, P.Y. and Makhmadsharif, S. (2023) Novikovite, IMA 2022-067. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-068

• Pengite

• (Pb₈Sb³⁺₃)_Σ11Sb⁵⁺₉O₃₅

• Peg

• Wuxu ore field, Nandan-Hechi metallogenic belt, Guangxi, China (23° N, 108° E)

• Guowu Li*, Ningyue Sun, Qi Lu, Yuan Xue, Zhesheng Ma, Nicheng Shi, Jinhua Hao and Junjia Fan

• *E-mail: [email protected]

• Structurally related to pyrochlore supergroup minerals

• Trigonal: R $\overline{3}$m ; structure determined

• a = 7.3651(3), c = 48.346(2) Å

• 3.236(43), 3.039(100), 2.669(55), 1.932(18), 1.846(21), 1.604(13), 1.578(11), 1.518(12)

• Type material is deposited in the collections of the Geological Museum of China, Yangrou Hutong No. 15, Xisi, Xicheng District, Beijing 100031, People's Republic of China, catalogue number M16137 (holotype), and the Crystal Structure Laboratory, China University of Geosciences, Beijing 100083, People's Republic of China, catalogue number Hc-1 (cotype)

• How to cite: Li, G., Sun, N., Lu, Q., Xue, Y., Ma, Z., Shi, N., Hao, J. and Fan, J. (2023) Pengite, IMA 2022-068. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-069

• Ferro-bosiite

• NaFe³⁺₃(Al₄Fe²⁺₂)(Si₆O₁₈)(BO₃)₃(OH)₃O

• Fbos

• “Marina” granitic pegmatite, Mavuco, Alto Ligoña, Nampula Province, Mozambique (15°54’16” S, 39°02’56” E)

• Ferdinando Bosi*, Alessandra Altieri, Henrik Skobgy, Federico Pezzotta, Ulf Hålenius, Gioacchino Tempesta, Paolo Ballirano, Tomáš Flégr and Jan Cempírek

• *E-mail: [email protected]

• Tourmaline supergroup

• Trigonal: R3m; structure determined

• a = 16.0499(5), c = 7.2977(2) Å

• 6.461(51), 4.264(48), 4.012(62), 3.529(46), 2.997(59), 2.598(100), 2.060(41), 1.937(23)

• Type material is deposited in the collections of the Museo Universitario di Scienze della Terra, Dipartimento di Scienze della Terra, Sapienza Università di Roma, Piazzale Aldo Moro 5, I-00185 Roma, Italy, catalogue number 33308/405

• How to cite: Bosi, F., Altieri, A., Skobgy, H., Pezzotta, F., Hålenius, U., Tempesta, G., Ballirano, P., Flégr, T. and Cempírek, J. (2023) Ferro-bosiite, IMA 2022-069. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-070

• Zincorietveldite

• Zn(UO₂)(SO₄)₂(H₂O)₅

• Zrvd

• Blue Lizard mine, Red Canyon, White Canyon district, San Juan Co., Utah, USA (37°33’26” N, 110°17’44” W)

• Anthony R. Kampf*, Travis A. Olds, Jakub Plášil and Joe Marty

• *E-mail: [email protected]

• The Zn analogue of rietveldite

• Orthorhombic: Pmn2₁; structure determined

• a = 12.8712(9), b = 8.3148(4), c = 11.2959(4) Å

• 8.35(37), 6.42(62), 5.09(58), 4.67(100), 4.23(38), 3.916(46), 3.429(47), 3.340(39)

• Cotype material is deposited in the collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue numbers 76262, 76264, 76265, 76266 and 76267

• How to cite: Kampf, A.R., Olds, T.A., Plášil, J. and Marty, J. (2023) Zincorietveldite, IMA 2022-070. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-071

• Nickelalumite

• NiAl₄(SO₄)(OH)₁₂(H₂O)₃

• Nal

• Kara-Tangi uranium deposit, Batken region, Kyrgyzstan

• Vladimir Y. Karpenko, Atali A. Agakhanov, Leonid A. Pautov, Tamara V. Dikaya, Galiya K. Bekenova, Yulia Uvarova, Elena Sokolova and Frank C. Hawthorne*

• *E-mail: [email protected]

• The Ni analogue of chalcoalumite

• Monoclinic: P2₁/n; structure determined

• a = 10.2567(5), b = 8.8815(4), c = 17.0989(8) Å, β = 95.548(1)°

• 8.35(100), 4.27(90), 3.02(60), 2.683(60), 2.508(80), 2.276(70), 1.981(90), 1.480(60)

• 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 6794

• How to cite: Karpenko, V.Y., Agakhanov, A.A., Pautov, L.A., Dikaya, T.V., Bekenova, G.K., Uvarova, Y., Sokolova, E. and Hawthorne, F.C. (2023) Nickelalumite, IMA 2022-071. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-072

• Whiteite-(CaMnFe)

• CaMnFe₂Al₂(PO₄)₄(OH)₂⋅8H₂O

• Wt-CaMnFe

• In a pegmatite mine, Hagendorf-Süd, Oberpfalz, Bavaria, Germany (49°39’01” N, 12°27’35” E)

• Rupert Hochleitner, Christian Rewitzer, Ian E. Grey*, William G. Mumme, Colin M. Macrae, Anthony R. Kampf, Erich Keck, Robert W. Gable and Alexander M. Glenn

• *E-mail: [email protected]

• Jahnsite group

• Monoclinic; P2/a; structure determined

• a = 14.924(3), b = 7.010(1), c =10.053(2) Å, β = 111.31(3)°

• 9.397(35), 4.932(38), 4.707(20), 3.493(20), 3.470(18), 2.923(29), 2.807(100), 1.950(20)

• Cotype material is deposited in the collections of the Mineralogische Staatssammlung München, Theresienstrasse 41,80333 München, Germany, registration number MSM 38031

• How to cite: Hochleitner, R., Rewitzer, C., Grey, I.E., Mumme, W.G., Macrae, C.M., Kampf, A.R., Keck, E., Gable, R.W. and Glenn, A.M. (2023) Whiteite-(CaMnFe), IMA 2022-072. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-073

• Napoliite

• Pb₂OFCl

• Npi

• From a fumarole after the 1944 eruption of the Vesuvius volcano, Naples province, Campania, Italy

• Anatoly V. Kasatkin*, Oleg I. Siidra, Fabrizio Nestola, Igor V. Pekov, Atali A. Agakhanov, Evgeny V. Nazarchuk, Natalia N. Koshlyakova, Nikita V. Chukanov and Manuela Rossi

• *E-mail: [email protected]

• A dimorph of rumseyite

• Tetragonal: P4₂/mcm; structure determined

• a = 5.742(1), c = 12.524(4) Å

• 3.860(85), 3.139(20), 2.914(100), 2.866(63), 2.118(19), 2.027(19), 1.665(20), 1.642(23)

• 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 5885/1

• How to cite: Kasatkin, A.V., Siidra, O.I., Nestola, F., Pekov, I.V., Agakhanov, A.A., Nazarchuk, E.V., Koshlyakova, N.N., Chukanov, N.V. and Rossi, M. (2023) Napoliite, IMA 2022-073. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

NEW MINERAL PROPOSALS APPROVED IN NOVEMBER 2022

IMA No. 2022-056

• Sidorovite

• Fe₃Pt

• Sido

• Snegovaya River placer, Koryak Highlands, Far Eastern Region, Russia (61°32’06” N, 171°35’50” E)

• Anton V. Kutyrev, Andrew M. McDonald*, Nobumichi Tamura, Louis J. Cabri, Nadezhda Tolstykh and Igor V. Pekov

• *E-mail: [email protected]

• The Fe analogue of tomamaeite

• Cubic: Pm $\overline{3}$m ; structure determined

• a = 3.725(4) Å

• 3.711(48), 2.161(100), 1.871(36), 1.673(27), 1.323(22), 1.248(<10), 1.187(<10), 1.03(<10)

• Type material is deposited in the collections of the Canadian Museum of Nature, 1740 Pink Road, Gatineau, QC, Canada, catalogue number CMNMC 90260

• How to cite: Kutyrev, A.V., McDonald, A.M., Tamura, N., Cabri, L.J., Tolstykh, N. and Pekov, I.V. (2023) Sidorovite, IMA 2022-056. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-075

• Zipserite

• Bi₅S₄

• Zps

• Alsó-Rózsa adit, about 5 km ENE of the village Nagybörzsöny, Pest province, Hungary (47°56’27” N, 18°53’40” E)

• Juraj Majzlan*, Daniel Ozdín, Jiří Sejkora, Gwladys Steciuk, Jakub Plášil, Christiane Rößler and Christian Matthes

• *E-mail: [email protected]

• New structure type

• Trigonal: P $\overline{3}$m ; structure determined

• a = 4.162(1), c = 16.397(1) Å

• 3.520(18), 3.300(14), 3.009(100), 2.178(37), 2.081(37), 1.712(20), 1.371(15), 1.322(17)

• Type material is deposited in the collections of the Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 3278/6, 84104 Karlova Ves, Slovakia, catalogue number MMUK 7670

• How to cite: Majzlan, J., Ozdín, D., Sejkora, J., Steciuk, G., Plášil, J., Rößler, C. and Matthes, C. (2023) Zipserite, IMA 2022-075. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-077

• Pleysteinite

• [(H₂O)_0.5K_0.5]₂Mn₂Al₃(PO₄)₄F₂⋅14H₂O

• Pley

• Hagendorf Süd pegmatite mine (64/67 m level), Oberpfalz, northeast Bavaria, Germany (49°39’01” N, 12°27’35” E)

• Ian E. Grey*, Rupert Hochleitner, Christian Rewitzer, Anthony R. Kampf, Colin M. MacRae, Robert W. Gable, William G. Mumme, Erich Keck and Cameron Davidson

• *E-mail: [email protected]

• The Mn²⁺ analogue of mantienneite, and the Al analogue of benyacarite

• Orthorhombic: Pbca; structure determined

• a = 10.4133(8), b =20.524(2), c =12.265(1) Å

• 10.29(49), 7.41(65), 6.13(100), 5.20(43), 3.699(59), 3.122(69), 2.859(76), 2.606(37)

• Type material is deposited in the collections of the Staatlichen Naturwissenschaftlichen Sammlungen Bayerns, Menzinger Str. 71, 80638 Munich, Germany, registration number MSM 38032 (holotype), and the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue number 76271 (cotype)

• How to cite: Grey, I.E., Hochleitner, R., Rewitzer, C., Kampf, A.R., MacRae, C.M., Gable, R.W., Mumme, W.G., Keck, E. and Davidson, C. (2023) Pleysteinite, IMA 2022-077. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA no. 2022-078

• Tetrahedrite-(Cu)

• Cu₆(Cu₄Cu₂)Sb₄S₁₃

• Ttr-Cu

• Medvedza magnesite body (stope K 401), Bankov magnesite deposit, near Košice, Košice Region, Slovakia (48°44’8.06” N, 21°13’40.10” E)

• Jiří Sejkora*, Cristian Biagioni, Martin Števko, Silvia Musetti and Dušan Peterec

• *E-mail: [email protected]

• Tetrahedrite group

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

• a = 10.329(1) Å

• 3.652(9), 2,982(100), 2.761(7), 2.582(21), 2.435(7), 1.886(7), 1.826(40), 1.557(19)

• Type material is deposited in the collections of the Department of Mineralogy and Petrology, National Museum in Prague, Cirkusová 1740, 19300 Praha 9, Czech Republic, catalogue number P1P 27/2022, and the Museo di Storia Naturale, Università di Pisa, Via Roma 79, Calci (PI), Italy, catalogue number 20017

• How to cite: Sejkora, J., Biagioni, C., Števko, M., Musetti, S. and Peterec, D. (2023) Tetrahedrite-(Cu), IMA 2022-078. CNMNC Newsletter 70; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA no. 2022-079

• Yeite

• TiSi

• Yei

• As inclusions in corundum xenocrysts, Mount Carmel, Haifa district, Israel (32°44’ N, 35°03’ E)

• Chi Ma*, William L. Griffin, Luca Bindi, Fernando Cámara and Vered Toledo

• *E-mail: [email protected]

• Known synthetic analogue

• Orthorhombic: Pnma

• a = 6.55(1), b = 3.64(1), c = 4.99(1) Å

• 2.683(66), 2.435(58), 2.332(80), 2.188(100), 2.000(42), 1.963(71), 1.820(44), 1.435(35)

• Type material is deposited in the mineralogical collections of the Università di Milano, Via Mangiagalli 34, 20133 Milano, Italy, registration number MCMGPG-H2021-002

• How to cite: Ma, C., Griffin, W.L., Bindi, L., Cámara, F. and Toledo, V. (2023) Yeite, IMA 2022-079. CNMNC Newsletter 70; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-080

• Gunmaite

• (Na₂Sr)Sr₂Al₁₀(PO₄)₄F₁₄(OH)₁₂

• Gum

• Ashio Mountains, Tsukubara, Kiryu city, Gunma Prefecture, Japan (36°30’41” N, 139°25’26” E)

• Daisuke Nishio-Hamane*, Takeshi Yajima, Yoshiya Ohki, Hirofumi Hori, Issei Ikari and Yoshihiro Ohara

• *E-mail: [email protected]

• New structure type

• Trigonal: R $\overline{3}$m ; structure determined

• a = 6.9972(2), c = 50.270(2) Å

• 5.458(80), 3.499(57), 3.228(29), 2.965(100), 2.233(35), 2.138(49), 1.900(59), 1.749(64)

• Type material is deposited in the collections of the National Museum of Nature and Science, Amakubo, Tsukuba, Ibaraki 305-0005, Japan, specimen number NSM-M49762

• How to cite: Nishio-Hamane, D., Yajima, T., Ohki, Y., Hori, H., Ikari, I. and Ohara, Y. (2023) Gunmaite, IMA 2022-080. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-081

• Tianhuixinite

• (MoO₃)₃⋅H₂O

• Thx

• Summit group of claims, near Cookes Peak, southern end of the Cookes Range, Luna Co., New Mexico, USA (32°33’47” N, 107°43’48” W)

• Xiangping Gu*, Ron Gibbs and Hexiong Yang

• *E-mail: [email protected]

• Known synthetic analogue

• Hexagonal: P6₃/m

• a = 10.5845(3), c = 3.7285(1) Å

• 9.174(100), 4.586(26), 3.456(94), 3.047(43), 2.539(34), 1.999(13), 1.951(14), 1.641(22)

• 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 # 22722 (holotype), and the RRUFF Project, deposition # R220024 (cotype)

• How to cite: Gu, X., Gibbs, R. and Yang, H. (2023) Tianhuixinite, IMA 2022-081. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA no. 2022-082

• Hakite-(Fe)

• Cu₆(Cu₄Fe₂)Sb₄Se₁₃

• Hak-Fe

• In the mine dump of the shaft No. 16 – Háje, near Příbram, Příbram ore district, Central Bohemia, Czech Republic (49°40’33.894” N, 14°03'29.922” E)

• Jiří Sejkora*, Cristian Biagioni, Pavel Škácha, Silvia Musetti and Zdeněk Dolníček

• *E-mail: [email protected]

• Tetrahedrite group

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

• a = 10.7983(4) Å

• 3.818(9), 3.117(100), 2.886(15), 2.545(10), 1.971(15), 1.909(54), 1.752(10), 1.628(20)

• Type material is deposited in the collections of the Department of Mineralogy and Petrology, National Museum in Prague, Cirkusová 1740, 19300 Praha 9, Czech Republic, catalogue number P1P 11/2016, and the Museo di Storia Naturale, Università di Pisa, Via Roma 79, Calci (PI), Italy, catalogue number 20019

• How to cite: Sejkora, J., Biagioni, C., Škácha, P., Musetti, S. and Dolníček, Z. (2023) Hakite-(Fe), IMA 2022-082. CNMNC Newsletter 70; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA no. 2022-083

• Hakite-(Zn)

• Cu₆(Cu₄Zn₂)Sb₄Se₁₃

• Hak-Zn

• In the mine dump of the shaft No. 16 – Háje, near Příbram, Příbram ore district, Central Bohemia, Czech Republic (49°40’33.894” N, 14°03'29.922” E)

• Jiří Sejkora*, Cristian Biagioni, Pavel Škácha, Silvia Musetti and Zdeněk Dolníček

• *E-mail: [email protected]

• Tetrahedrite group

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

• a = 10.812(1) Å

• 3.822(8), 3.121(100), 2.890(15), 2.548(9), 1.974(15), 1.911(54), 1.754(10), 1.630(20)

• Type material is deposited in the collections of the Department of Mineralogy and Petrology, National Museum in Prague, Cirkusová 1740, 19300 Praha 9, Czech Republic, catalogue number P1P 11/2016, and the Museo di Storia Naturale, Università di Pisa, Via Roma 79, Calci (PI), Italy, catalogue number 20021

• How to cite: Sejkora, J., Biagioni, C., Škácha, P., Musetti, S. and Dolníček, Z. (2023) Hakite-(Zn), IMA 2022-083. CNMNC Newsletter 70; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA no. 2022-084

• Arsenogoldfieldite

• Cu₆Cu₆(As₂Te₂)S₁₃

• Asgf

• North Star mine, Mammoth, Tintic district, Juab Co., Utah, USA (39°55’14” N, 112°06’26” W)

• Jiří Sejkora*, Cristian Biagioni, Zdeněk Dolníček and Panagiotis Voudouris

• *E-mail: [email protected]

• Tetrahedrite group

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

• a = 10.2868(4) Å

• 7.251(5), 3.638(8), 2.969(100), 2.573(9), 2.426(5), 1.819(21), 1.550(9), 1.484(7)

• Type material is deposited in the collections of the Department of Mineralogy and Petrology, National Museum in Prague, Cirkusová 1740, 19300 Praha 9, Czech Republic, catalogue number P1P 28/2022 (holotype), and the Museo di Storia Naturale, Università di Pisa, Via Roma 79, Calci (PI), Italy, catalogue number 20018 (holotype) and 20020 (cotype)

• How to cite: Sejkora, J., Biagioni, C., Dolníček, Z. and Voudouris, P. (2023) Arsenogoldfieldite, IMA 2022-084. CNMNC Newsletter 70; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-085

• Stanevansite

• Mg(C₂H₃O₃)₂⋅2H₂O

• Ses

• Pusch Ridge, Santa Catalina Mountains, north of Tucson, Pima Co., Arizona, USA (32°21’42” N, 110°57’30” W)

• Hexiong Yang*, Xiangping Gu, Warren Lazar, Ronald B. Gibbs and Robert T. Downs

• *E-mail: [email protected]

• New structure type

• Monoclinic: P2₁/c; structure determined

• a = 11.4927(2), b = 5.8547(1), c = 12.4711(2) Å, β = 91.161(1)°

• 5.47(62), 5.223(93), 4.787(100), 3.819(73), 3.102(71), 3.018(33), 2.580(20), 2.406(33)

• 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 # 22721 (holotype), and the RRUFF Project, deposition # R220011 (cotype)

• How to cite: Yang, H., Gu, X., Lazar, W., Gibbs, R.B. and Downs, R.T. (2023) Stanevansite, IMA 2022-085. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-086

• Cuprocherokeeite

• [Pb₈Zn₃Cu²⁺(OH)₁₆](SO₄)₄⋅4H₂O

• Cchk

• Redmond mine, Haywood Co., North Carolina, USA (35°40’55” N, 83°00’56” W)

• Anthony R. Kampf*, Jason B. Smith, John M. Hughes, Chi Ma and Christopher Emproto

• *E-mail: [email protected]

• Chemically and structurally related to cherokeeite

• Monoclinic: P2₁/n; structure determined

• a = 12.6828(5), b = 9.4629(5), c = 14.7876(8) Å, β = 94.798(4)°

• 5.27(100), 4.53(48), 3.431(34), 3.315(24), 3.130(27), 3.081(68), 2.924(26), 2.435(22)

• Cotype material is deposited in the collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue numbers 76272, 76273 and 76274

• How to cite: Kampf, A.R., Smith, J.B., Hughes, J.M., Ma, C. and Emproto, C. (2023) Cuprocherokeeite, IMA 2022-086. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-087

• Elaliite

• (Fe²⁺₈Fe³⁺)(PO₄)O₈

• Eal

• El Ali meteorite, found in September 2020 close to Hiiraan, Somalia

• Christopher D.K. Herd*, Chi Ma, Radhika Saini, Andrew J. Locock and Erin L. Walton

• *E-mail: [email protected]

• Known synthetic analogue

• Orthorhombic: Cmmm

• a = 5.95(1), b = 25.69(1), c = 3.06(1) Å

• 12.84(80), 2.699(42), 2.592(38), 2.569(46), 2.443(45), 2.141(44), 2.133(100), 1.511(77)

• Type material is deposited in the meteorite collections of the Department of Earth and Atmospheric Sciences, University of Alberta, 1-26 Earth Sciences Building, Edmonton, Alberta, T6G 2E3, Canada, accession number MET11814

• How to cite: Herd, C.D.K., Ma, C., Saini, R., Locock, A.J. and Walton, E.L. (2023) Elaliite, IMA 2022-087. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-088

• Elkinstantonite

• Fe₄(PO₄)₂O

• Elk

• El Ali meteorite, found in September 2020 close to Hiiraan, Somalia

• Christopher D.K. Herd*, Chi Ma, Radhika Saini, Andrew J. Locock and Erin L. Walton

• *E-mail: [email protected]

• Known synthetic analogue

• Monoclinic: P2₁/c

• a = 6.56(1), b = 11.27(1), c = 9.38(1) Å, β = 104.0(1)°

• 3.063(25), 2.929(60), 2.869(78), 2.822(45), 2.817(100), 2.671(64), 2.508(30), 1.849(28)

• Type material is deposited in the meteorite collections of the Department of Earth and Atmospheric Sciences, University of Alberta, 1-26 Earth Sciences Building, Edmonton, Alberta, T6G 2E3, Canada, accession number MET11814

• How to cite: Herd, C.D.K., Ma, C., Saini, R., Locock, A.J. and Walton, E.L. (2023) Elkinstantonite, IMA 2022-088. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA no. 2022-090

• Hakite-(Cd)

• Cu₆(Cu₄Cd₂)Sb₄Se₁₃

• Hak-Cd

• In the mine dump of the shaft No. 16 – Háje, near Příbram, Příbram ore district, Central Bohemia, Czech Republic (49°40’33.894” N, 14°03'29.922” E)

• Jiří Sejkora*, Cristian Biagioni, Pavel Škácha, Silvia Musetti and Zdeněk Dolníček

• *E-mail: [email protected]

• Tetrahedrite group

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

• a = 10.8860(6) Å

• 3.143(100), 2.909(12), 2.566(8), 2.135(9), 1.988(13) 1.924(50), 1.766(9), 1.641(20)

• Type material is deposited in the collections of the Department of Mineralogy and Petrology, National Museum in Prague, Cirkusová 1740, 19300 Praha 9, Czech Republic, catalogue number P1P 30/2022, and the Museo di Storia Naturale, Università di Pisa, Via Roma 79, Calci (PI), Italy, catalogue number 20022

• How to cite: Sejkora, J., Biagioni, C., Škácha, P., Musetti, S. and Dolníček, Z. (2023) Hakite-(Cd), IMA 2022-090. CNMNC Newsletter 70; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA No. 2022-091

• Libbyite

• (NH₄)₂(Na₂☐)[(UO₂)₂(SO₄)₃(H₂O)]₂⋅7H₂O

• Ly

• Blue Lizard mine, Red Canyon, White Canyon District, San Juan Co., Utah, USA (37°33’26” N, 110°17’44” W)

• Anthony R. Kampf*, Travis A. Olds, Jakub Plášil, Barbara P. Nash and Joe Marty

• *E-mail: [email protected]

• New structure type

• Tetragonal: P4₁2₁2; structure determined

• a = 10.704(1), c = 31.824(2) Å

• 7.97(100), 4.77(23), 4.58(79), 3.553(71), 3.385(25), 2.963(21), 2.648(31), 2.053(25)

• Cotype material is deposited in the collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue numbers 76267, 76268, 76269 and 76270

• How to cite: Kampf, A.R., Olds, T.A., Plášil, J., Nash, B.P. and Marty, J. (2023) Libbyite, IMA 2022-091. CNMNC Newsletter 70, Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

IMA no. 2022-092

• Zvĕstovite-(Fe)

• Ag₆(Ag₄Fe₂)As₄S₁₃

• Zvĕ-Fe

• Ulatayskoe Ag-Cu-Co occurrence, Ulatay river, Ovyurskiy District, Tuva Republic, Eastern Siberia, Russia

• Cristian Biagioni*, Anatoly V. Kasatkin, Fabrizio Nestola, Radek Škoda, Atali A. Agakhanov and Natalia N. Koshlyakova

• *E-mail: [email protected]

• Tetrahedrite group

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

• a = 10.8601(3) Å

• 7.679(6), 4.434(4), 3.135(100), 2.715(19), 2.560(4), 1.983(11), 1.920(31), 1.637(15),

• 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 5919/1

• How to cite: Biagioni, C., Kasatkin, A.V., Nestola, F., Škoda, R., Agakhanov, A.A. and Koshlyakova, N.N. (2023) Zvĕstovite-(Fe), IMA 2022-092. CNMNC Newsletter 70; Mineralogical Magazine, 87, https://doi.org/10.1180/mgm.2022.135

Symbol for raydemarkite

The correct symbol for the new mineral raydemarkite (IMA No. 2022-015) is ryd, and not rdy, as given in CNMNC Newsletter 68.

NOMENCLATURE/CLASSIFICATION PROPOSALS APPROVED IN OCTOBER 2022

Triphylite group

The triphylite group is established; it includes seven mineral species: triphylite, lithiophilite, heterosite, purpurite, simferite, karenwebberite and natrophilite. Sicklerite and ferrisicklerite have been discredited. Simferite has been redefined as LiMg(PO₄).

NOMENCLATURE/CLASSIFICATION PROPOSALS APPROVED IN NOVEMBER 2022

IMA 22-F: Holotype redefinition for donnayite-(Y)

Proposal 22-F is accepted. Re-examination of donnayite-(Y) type specimens showed that the original description contains data collected on two different phases with simplified formulae NaCaSr₃Y(CO₃)₆⋅3H₂O and Na₂Sr₂YCe(CO₃)₆⋅3H₂O. The latter corresponds to the recently approved species alicewilsonite-(YCe) (IMA 2020-055). Donnayite-(Y), with the ideal formula NaCaSr₃Y(CO₃)₆⋅3H₂O, was found in only one specimen - CMNMC 39396 - out of seven housed at the Canadian Museum of Nature, 240 McLeod St, Ottawa, ON K2P 2R1, Canada. This specimen has become the holotype of donnayite-(Y).

IMA 22-G: Establishment of the mckelveyite group

Proposal 22-G is accepted, and the mckelveyite group is established. Seven minerals belong to the group: alicewilsonite-(YCe), alicewilsonite-(YLa), bainbridgeite-(YCe), donnayite-(Y), ewaldite, mckelveyite-(Y), and weloganite. Mckelveyite group minerals are carbonates with the general formula A₃B₃(CO₃)₆⋅3H₂O, where A = Na, Ca, Y+HREE, Zr, and B = Sr, Ba, LREE. Their structure is based on two alternating layers with larger B cations forming one layer and smaller A cations A forming another. Different order-disorder modifications are known resulting in triclinic, monoclinic and trigonal minerals with essentially the same structure.

IMA 22-H: Redefinition of bystrite

Proposal 22-H on bystrite is accepted. The mineral bystrite was first described as a trigonal cancrinite-related phase with the simplified formula Ca(Na,K)₇(Al₆Si₆O₂₄)(S₃^2–)1.5⋅H₂O. Initially, two bystrite varieties were distinguished: (i) K-rich and Cl-deficient, and (ii) Cl-rich and K-deficient. The latter mineral has been subsequently approved as a separate mineral species, sulfhydrylbystrite, with the formula Na₅K₂Ca(Al₆Si₆O₂₄)S₅^2–(HS)^–. The crystal structure of the presumed Cl-rich and K-deficient bystrite variety shows that this mineral is isostructural with sulfhydrylbystrite and is its analogue with Cl^– instead of (HS)^– in cancrinite cages, and Na⁺ at the site that is predominantly occupied by K⁺ in sulfhydrylbystrite. The ideal formula of bystrite is consequently redefined as Na₇Ca(Al₆Si₆O₂₄)S₅^2–Cl^–.

Establishment of the kristiansenite group

The proposal to establish the kristiansenite group is accepted. The group includes three mineral species: kristiansenite, with formula Ca₄Sc₂Sn₂(Si₂O₇)₂(Si₂O₆OH)₂, silesiaite, with formula Ca₄Fe³⁺₂Sn₂(Si₂O₇)₂(Si₂O₆OH)₂, and kozłowskiite, with formula Ca₄Fe²⁺Sn₃(Si₂O₇)₂(Si₂O₆OH)₂.