IMA no. 2021-041

• Kiryuite

• NaMnAl(PO₄)F₃

• Kyu

• Tsukubara, city of Kiryu, Gunma Prefecture, Japan (36^∘30^′41^′′ N, 139^∘25^′26^′′ E)

• Daisuke Nishio-Hamane*, Issei Ikari, and Yoshihiro Ohara

• *E-mail: hamane@issp.u-tokyo.ac.jp

• The Mn analogue of viitaniemiite

• Monoclinic: P2₁/m; structure determined

• a = 5.425(4), b = 7.128(4), c = 6.817(6) Å, β = 109.41(7)^∘

• 3.213(57), 3.124(26), 2.923(53), 2.877(100), 2.560(57), 2.305(27), 2.263(43), 2.155(76)

• Type material is deposited in the mineralogical collections of the National Museum of Nature and Science, Amakubo 4-1-1, Tsukuba, Japan, specimen number NSM-M48724

• How to cite: Nishio-Hamane, D., Ikari, I., and Ohara, Y.: Kiryuite, IMA 2021-041, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-042

• Håleniusite-(Ce)

• CeOF

• Hål-Ce

• Água de Pau volcano (Fogo volcano), Sãn Miguel Island, Azores District, Portugal (37^∘46^′31^′′ N, 25^∘27^′31^′′ W)

• Anthony R. Kampf*, Chi Ma, and Luigi Chiappino

• *E-mail: akampf@nhm.org

• The Ce analogue of håleniusite-(La)

• Cubic: Fm$\stackrel{\mathrm{‾}}{\mathrm{3}}m$

• a = 5.6597(10)

• 3.247(100), 2.840(31), 2.004(46), 1.705(30), 1.628(5), 1.413(4), 1.295(11), 1.266(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 numbers 76144, 76145, and 76146

• How to cite: Kampf, A. R., Ma, C., and Chiappino, L.: Håleniusite-(Ce), IMA 2021-042, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-044

• Flaggite

• Pb₄Cu${}_{\mathrm{4}}^{\mathrm{2}+}$Te${}_{\mathrm{2}}^{\mathrm{6}+}$(SO₄)₂O₁₁(OH)₂(H₂O)

• Flg

• Grand Central mine, Tombstone District, Cochise Co., Arizona, USA (31^∘42^′09^′′ N, 110^∘03^′43^′′ W)

• Anthony R. Kampf*, Stuart J. Mills, Aaron J. Celestian, Chi Ma, Hexiong Yang, and Brent Thorne

• *E-mail: akampf@nhm.org

• Structurally and chemically related to bairdite

• Triclinic: P1; structure determined

• a = 9.5610(2), b = 9.9755(2), c = 10.4449(3) Å, α = 74.884(1), β = 89.994(1), γ = 78.219(1)^∘

• 9.41(65), 4.59(93), 4.34(49), 3.519(53), 3.070(99), 3.023(87), 2.724(100), 2.167(41)

• 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 64499, 64500, and 76143

• How to cite: Kampf, A. R., Mills, S. J., Celestian, A. J., Ma, C., Yang, H., and Thorne, B.: Flaggite, IMA 2021-044, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-046

• Ferri-taramite

• Na(NaCa)(Mg₃Fe${}_{\mathrm{2}}^{\mathrm{3}+}$)(Si₆Al₂)O₂₂(OH)₂

• Fi-trm

• Jakobsberg mine, Filipstad, Värmland, Sweden (59^∘49^′40^′′ N, 14^∘06^′25^′′ E)

• Dan Holtstam*, Fernando Cámara, Andreas Karlsson, Henrik Skogby, and Thomas Zack

• *E-mail: dan.holtstam@nrm.se

• Amphibole supergroup

• Monoclinic: C2/m; structure determined

• a = 9.8960(1), b = 18.015(2), c = 5.32164(7) Å, β = 105.00(1)^∘

• 8.44(60), 3.392(25), 3.281(39), 3.140(100), 2.816(45), 2.710(38), 1.654(26), 1.445(33)

• 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 19221254

• How to cite: Holtstam, D., Cámara, F., Karlsson, A., Skogby, H., and Zack, T.: Ferri-taramite, IMA 2021-046, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-047

• Alicewilsonite-(YLa)

• Na₂Sr₂YLa(CO₃)₆•3H₂O

• Aws-YLa

• Paratoo copper mine, Yunta, Olary Province, South Australia, Australia (32^∘40^′40^′′ S, 139^∘19^′50^′′ E)

• Inna Lykova*, Ralph Rowe, Glenn Poirier, Kate Helwig, and Henrik Friis

• *E-mail: ilykova@nature.ca

• The La analogue of alicewilsonite-(YCe)

• Triclinic: P1; structure determined

• a = 8.9793(3), b = 8.9734(2), c = 6.7404(2) Å, α = 102.829(2), β = 116.382(3), γ = 60.109(3)^∘

• 6.03(43), 4.355(100), 4.020(30), 2.819(96), 2.592(40), 2.228(33), 2.011(36), 1.967(32)

• Type material is deposited in the mineralogical collections of the Canadian Museum of Nature, P.O. Box 3443, Station “D”, Ottawa, Ontario, Canada, catalogue number CMNMC 89063, and the Natural History Museum, University of Oslo, P.O. Box 1172, Blindern, Oslo, Norway, catalogue number KNR 44330

• How to cite: Lykova, I., Rowe, R., Poirier, G., Helwig, K., and Friis, H.: Alicewilsonite-(YLa), IMA 2021-047, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-048

• Dondoellite

• Ca₂Fe(PO₄)₂•2H₂O

• Ddl

• Grizzly Bear Peak, Stoneman Camp (Area B; Area 2), Rapid Creek, Dawson mining district, Yukon, Canada (68^∘ N, 137^∘ W, estimated)

• Hexiong Yang*, Ronald B. Gibbs, James A. McGlasson, Robert A. Jenkins, and Robert T. Downs

• *E-mail: hyang@arizona.edu

• A dimorph of messelite

• Triclinic: $P\stackrel{\mathrm{‾}}{\mathrm{1}}$; structure determined

• a = 5.4830(2), b = 5.7431(2), c = 13.0107(5) Å, α = 98.772(2), β = 96.209(2), γ = 108.452(2)^∘

• 6.316(35), 3.149(100), 3.023(63), 2.669(100), 2.574(30), 2.628(26), 1.782(25), 1.701(25)

• Type material is deposited in the mineralogical collections of the University of Arizona Mineral Museum, 1040 E 4th Street, Tucson, AZ 85721-0077, USA, catalogue no. 22710 (holotype), and the RRUFF project, deposition no. R210003 (cotype)

• How to cite: Yang, H., Gibbs, R. B., McGlasson, J. A., Jenkins, R. A., and Downs, R. T.: Dondoellite, IMA 2021-048, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-049

• Whiteite-(MnMnMn)

• Mn²⁺Mn²⁺Mn${}_{\mathrm{2}}^{\mathrm{2}+}$Al₂(PO₄)₄(OH)₂•8H₂O

• Wt-MnMnMn

• Foote Lithium Company mine (east dump), Kings Mountain District, Cleveland Co., North Carolina, USA (35^∘12^′40^′′ N, 81^∘21^′20^′′ W)

• Ian E. Grey*, Jason B. Smith, Anthony R. Kampf, W. Gus Mumme, Colin M. Macrae, Alan Riboldi-Tunnicliffe, Stephanie Boer, and Alexander M. Glenn

• *E-mail: ian.grey@csiro.au

• Jahnsite group

• Monoclinic: P2/a; structure determined

• a = 15.024(3), b = 6.947(1), c = 9.999(2) Å, β = 110.71(3)^∘

• 9.40(49), 4.92(66), 4.70(37), 3.513(42), 2.801(100), 1.950(26), 1.884(26), 1.568(28)

• 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 numbers 74374, 76149, 76150 and 76151

• How to cite: Grey, I. E., Smith, J. B., Kampf, A. R., Mumme, W. G., Macrae, C. M., Riboldi-Tunnicliffe, A., Boer, S., and Glenn, A. M.: Whiteite-(MnMnMn), IMA 2021-049, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-036

• Ferroberaunite

• Fe²⁺Fe${}_{\mathrm{5}}^{\mathrm{3}+}$(PO₄)₄(OH)₅•6H₂O

• Fbru

• Gravel Hill mine, Perranzabuloe, Cornwall, England, United Kingdom (50^∘22^′27.0^′′ N, 5^∘08^′42.0^′′ W)

• Jaromír Tvrdý*, Jakub Plášil, Jiří Sejkora, Radek Škoda, Luboš Vrtiška, Zdeněk Dolníček, Martin Petr, and František Veselovský

• *E-mail: jt.geologie@gmail.com

• The Fe²⁺ analogue of zincoberaunite

• Monoclinic: C2/c; structure determined

• a = 20.8729(6), b = 5.1581(2), c = 19.2294(5) Å, β = 93.396(2)^∘

• 10.410(100), 9.606(14), 7.271(11), 5.203(4), 3.467(12), 3.325(6), 3.201(6), 2.600(4)

• Type material is deposited in the collections of the Department of Mineralogy and Petrology, National Museum in Prague, Cirkusová 1740, Prague 9, Czech Republic, catalogue number P1P 11/2021

• How to cite: Tvrdý, J., Plášil, J., Sejkora, J., Škoda, R., Vrtiška, L., Dolníček, Z., Petr, M., and Veselovský, F.: Ferroberaunite, IMA 2021-036, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-043

• Gismondine-Sr

• Sr₄(Si₈Al₈O₃₂)•9H₂O

• Gis-Sr

• Halamish, Hatrurim Basin, Negev Desert, Israel (31^∘09^′42^′′ N, 35^∘17^′29^′′ E)

• Katarzyna Nowak*, Georgia Cametti, Irina O. Galuskina, Yevgeny Vapnik, and Evgeny V. Galuskin

• *E-mail: katarzyna.k.nowak@us.edu.pl

• Zeolite group (GIS-type framework)

• Orthorhombic: B22₁2; structure determined

• a = 14.0256(2), b = 10.4590(1), c = 13.7936(1) Å

• 7.165(34), 4.917(100), 4.192(88), 4.167(46), 3.128(47), 2.683(34), 2.663(25), 2.615(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 5708/1

• How to cite: Nowak, K., Cametti, G., Galuskina, I. O., Vapnik, Y., and Galuskin, E. V.: Gismondine-Sr, IMA 2021-043, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-045a

• Nitroplumbite

• [Pb₄(OH)₄](NO₃)₄

• Npb

• Burro mine, Slick Rock District, San Miguel Co., Colorado, USA (38^∘02^′42^′′ N, 108^∘53^′22^′′ W)

• Anthony R. Kampf*, John M. Hughes, Barbara P. Nash, and Joe Marty

• *E-mail: akampf@nhm.org

• Known synthetic analogue

• Monoclinic: Ia; structure determined

• a = 18.3471(7), b = 17.3057(4), c = 18.6698(8) Å, β = 91.872(3)^∘

• 6.34(100), 4.849(27), 3.595(37), 3.302(36), 3.172(29), 2.997(35), 2.922(28), 2.755(29)

• 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 76147 (holotype) and 76148 (cotype)

• How to cite: Kampf, A. R., Hughes, J. M., Nash, B. P., and Marty, J.: Nitroplumbite, IMA 2021-045a, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-051

• Savelievaite

• Mg₂Cr³⁺O₂(BO₃)

• Svlv

• Left bank of the Malaya Kharamatalou river valley, northern part of the Voikar-Syninskiy ultrabasite complex, Shuryshkarskiy District, Yamalo-Nenets Autonomous Okrug, Polar Urals, Russia (66^∘39^′57^′′ N, 64^∘41^′50^′′ E)

• Igor V. Pekov*, Nadezhda V. Vakhrusheva, Natalia V. Zubkova, Vasiliy O. Yapaskurt, Yulia S. Shelukhina, Yuriy V. Erokhin, Maria O. Bulakh, Sergey N. Britvin, and Dmitry Y. Pushcharovsky

• *E-mail: igorpekov@mail.ru

• Ludwigite group

• Orthorhombic: Pbam; structure determined

• a = 9.2631(6), b = 12.2298(8), c = 3.0104(2) Å

• 5.101(100), 3.008(24), 2.551(90), 2.524(88), 2.163(36), 2.033(55), 1.906(29), 1.574(25)

• 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 5720/1

• How to cite: Pekov, I. V., Vakhrusheva, N. V., Zubkova, N. V., Yapaskurt, V. O., Shelukhina, Y. S., Erokhin, Y. V., Bulakh, M. O., Britvin, S. N., and Pushcharovsky, D. Y.: Savelievaite, IMA 2021-051, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-052

• Radvaniceite

• GeS₂

• Rad

• Kateřina mine, eastern part of the village of Radvanice, about 12 km east of the town of Trutnov, northern Bohemia, Czech Republic (50^∘33^′39.0^′′ N 16^∘03^′56.2^′′ E)

• Jiří Sejkora*, Vladimír Žáček, Radek Škoda, František Laufek, and Zdeněk Dolníček

• *E-mail: jiri.sejkora@nm.cz

• Known synthetic analogue

• Monoclinic: Pc

• a = 6.883(1), b = 22.501(3), c = 6.808(1) Å, β = 120.365(9)^∘

• 5.739(5), 5.207(16), 3.365(32), 2.842(33), 2.824(16), 2.813(20), 2.626(19), 2.327(13)

• Type material is deposited in the collections of the Department of Mineralogy and Petrology, National Museum in Prague, Cirkusová 1740, Prague 9, Czech Republic, catalogue number P1P 9/2021

• How to cite: Sejkora, J., Žáček, V., Škoda, R., Laufek, F., and Dolníček, Z.: Radvaniceite, IMA 2021-052, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-053

• Tombstoneite

• (Ca_0.5Pb_0.5)Pb₃Cu${}_{\mathrm{6}}^{\mathrm{2}+}$Te${}_{\mathrm{2}}^{\mathrm{6}+}$O₆(Te⁴⁺O₃)₆(Se⁴⁺O₃)₂(SO₄)₂•3H₂O

• Tbs

• Grand Central mine, Tombstone District, Cochise Co., Arizona, USA (31^∘42^′09^′′ N, 110^∘03^′43^′′ W)

• Anthony R. Kampf*, Stuart J. Mills, Robert M. Housley, Chi Ma, and Brent Thorne

• *E-mail: akampf@nhm.org

• New structure type

• Trigonal: P321; structure determined

• a = 9.1377(9), c = 12.2797(9) Å

• 12.36(50), 3.056(100), 2.912(42), 2.867(27), 2.691(34), 2.639(31), 1.792(31), 1.664(23)

• 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 76150

• How to cite: Kampf, A. R., Mills, S. J., Housley, R. M., Ma, C., and Thorne, B.: Tombstoneite, IMA 2021-053, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-054

• Aldomarinoite

• Sr₂Mn³⁺(AsO₄)₂(OH)

• Aldm

• Grand Central mine, Tombstone District, Cochise Co., Arizona, USA (31^∘42^′09^′′ N, 110^∘03^′43^′′ W)

• Fernando Cámara*, Lisa Baratelli, Marco E. Ciriotti, Fabrizio Nestola, and Gian Carlo Piccoli

• *E-mail: fernando.camara@unimi.it

• Brackebuschite supergroup

• Monoclinic: P2₁/m; structure determined

• a = 7.5577(4), b = 5.9978(3), c = 8.7387(4) Å, β = 111.938(6)^∘

• 3.191(89), 2.997(45), 2.914(47), 2.715(100), 2.087(39), 1.833(32), 1.761(29), 1.689(36)

• Type material is deposited in the collections of the Museo di Mineralogia, Gemmologia, Petrologia e Giacimentologia, Dipartimento di Scienze della Terra “Ardito Desio”, Università di Milano, Italy, catalogue number MCMGPG-H2021-001

• How to cite: Cámara, F., Baratelli, L., Ciriotti, M. E., Nestola, F., and Piccoli, G. C.: Aldomarinoite, IMA 2021-054, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-056

• Kaznakhtite

• Ni₆Co${}_{\mathrm{2}}^{\mathrm{3}+}$(CO₃)(OH)₁₆•4H₂O

• Kzt

• Kaznakhtinskiy ultrabasic massif, ca. 2 km west of the headwaters of the Kyzyl-Uyuk creek, Ust'-Koksinskiy District, Altai Republic, SW Siberia, Russia (50^∘14^′22^′′ N, 86^∘30^′25^′′ E)

• Anatoly V. Kasatkin*, Sergey N. Britvin, Maria G. Krzhizhanovskaya, Nikita V. Chukanov, Radek Škoda, Jörg Göttlicher, Dmitry I. Belakovskiy, Igor V. Pekov, and Victor V. Levitskiy

• *E-mail: anatoly.kasatkin@gmail.com

• Hydrotalcite supergroup

• Trigonal: $R\stackrel{\mathrm{‾}}{\mathrm{3}}$; structure determined

• a = 3.0514(3), c = 23.179(2) Å

• 7.72(100), 3.863(24), 2.630(4), 2.576(10), 2.294(6), 1.950(4), 1.526(4), 1.497(4)

• 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 5727/1

• How to cite: Kasatkin, A. V., Britvin, S. N., Krzhizhanovskaya, M. G., Chukanov, N. V., Škoda, R., Göttlicher, J., Belakovskiy, D. I., Pekov, I. V., and Levitskiy, V. V.: Kaznakhtite, IMA 2021-056, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-057

• Scenicite

• [(UO₂)(H₂O)₂(SO₄)]₂•3H₂O

• Sce

• Scenic mine, Fry Mesa, White Canyon District, San Juan Co., Utah, USA (37^∘38^′43^′′ N, 110^∘07^′10^′′ W) – holtype; Green Lizard mine, Red Canyon, White Canyon District, San Juan Co., Utah, USA (37^∘34^′37.10^′′ N, 110^∘17^′52.80^′′ W) – cotype

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

• *E-mail: akampf@nhm.org

• Structurally related to shumwayite

• Orthorhombic: Pca2₁; structure determined

• a = 21.214(1), b = 6.8188(3), c = 11.2554(6) Å

• 7.69(70), 5.63(100), 4.92(84), 4.80(93), 3.699(48), 3.398(55), 2.791(43), 2.590(51)

• 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 76153 (holotype) and 76154 (cotype)

• How to cite: Kampf, A. R., Plášil, J., Olds, T. A., Ma, C., and Marty, J.: Scenicite, IMA 2021-057, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-058

• Dongchuanite

• Pb₄ZnZn₂(PO₄)₄(OH)₂

• Dc

• Village of Sanguozhuang, town of Tangdan, Dongchuan District, city of Kunming, Yunnan Province, China (26^∘07^′36^′′ N, 103^∘00^′19^′′ E)

• Guowu Li*, Hongtao Shen, Ningyue Sun, Yuan Xue, and Jinhua Hao

• *E-mail: liguowu@cugb.edu.cn

• New structure type

• Triclinic: $P\stackrel{\mathrm{‾}}{\mathrm{1}}$; structure determined

• a = 4.762(1), b = 8.507(2), c = 10.364(2) Å, α = 97.11(2), β = 101.46(2), γ = 92.27(2)^∘

• 4.634(50), 3.428(100), 3.122(50), 3.052(60), 2.918(45), 2.816(50), 2.381(65), 1.853(50)

• Type material is deposited in the mineralogical collections of the Geological Museum of China, Xisi, Yangrou Hutong no. 15, Xisi, Beijing 100031, People's Republic of China, catalogue no. M16123 (holotype) and the Crystal Structure Laboratory, China University of Geosciences, Beijing 100083, People's Republic of China, catalogue no. DC-1 (cotype)

• How to cite: Li, G., Shen, H., Sun, N., Xue, Y., and Hao, J.: Dongchuanite, IMA 2021-058, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-059

• Ozernovskite

• Fe${}_{\mathrm{4}}^{\mathrm{3}+}$(Te⁴⁺O₄)(Te⁴⁺O₃)₄•7H₂O

• Ozn

• Orebody no. 5, Ozernovskoe gold deposit, 115 km north of the town of Klyuchi, Kamchatka peninsula, Far-Eastern Region, Russia (57^∘35^′31^′′ N, 160^∘38^′13^′′ E)

• Igor V. Pekov*, Sergey N. Britvin, Petr A. Pletnev, Nikita V. Chukanov, Dmitry I. Belakovskiy, and Vasiliy O. Yapaskurt

• *E-mail: igorpekov@mail.ru

• New structure type

• Monoclinic: C2/c; structure determined

• a = 25.923(3), b = 10.419(1), c = 7.902(1) Å, β = 93.415(4)^∘

• 12.92(78), 9.67(200), 5.206(24), 3.481(31), 3.329(26), 3.151(25), 3.007(27), 2.885(26)

• 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 5728/1

• How to cite: Pekov, I. V., Britvin, S. N., Pletnev, P. A., Chukanov, N. V., Belakovskiy, D. I., and Yapaskurt, V. O.: Ozernovskite, IMA 2021-059, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-061

• Colomeraite

• NaTi³⁺Si₂O₆

• Colo

• Colomera iron meteorite, fall in 1912 at Colomera, Benalúa de las Villas, Granada, Andalusia, Spain (37^∘25^′59^′′ N, 3^∘38^′59^′′ W)

• Chi Ma*

• *E-mail: chima@caltech.edu

• Pyroxene group

• Monoclinic: C2/c; structure determined

• a = 9.70(1), b = 8.88(1), c = 5.30(1) Å, β = 106.8(1)^∘

• 2.996(100), 2.923(43), 2.562(21), 2.537(40), 2.496(37), 1.637(20), 1.619(19), 1.408(22)

• Type material is deposited in the mineralogical collections of the Smithsonian National Museum of Natural History, 10th St. & Constitution Ave. NW, Washington, DC 20560, USA, catalogue number USNM 7928

• How to cite: Ma, C.: Colomeraite, IMA 2021-061, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-063

• Pomite

• Ca₃[V${}_{\mathrm{5}}^{\mathrm{4}+}$V${}_{\mathrm{10}}^{\mathrm{5}+}$O₃₇(CO₃)]•37H₂O

• Pom

• Blue Streak mine, about 13 km west of the town of Naturita, Bull Canyon, Montrose Co., Colorado, USA (38^∘11^′58^′′ N, 108^∘50^′24^′′ W)

• Anthony R. Kampf*, John M. Hughes, Chi Ma, Joe Marty, and Timothy P. Rose

• *E-mail: akampf@nhm.org

• Closely related to pseudopomite (IMA no. 2021-064; this newsletter)

• Triclinic: $P\stackrel{\mathrm{‾}}{\mathrm{1}}$; structure determined

• a = 12.367(1), b = 12.969(1) c = 22.068(2) Å, α = 99.038(7), β = 95.689(7), γ = 103.249(7)^∘

• 11.87(100), 10.62(98), 10.04(30), 9.06(37), 5.21(14), 3.921(18), 3.075(19), 2.632(14)

• 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 76155

• How to cite: Kampf, A. R., Hughes, J. M., Ma, C., Marty, J., and Rose, T. P.: Pomite, IMA 2021-063, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-064

• Pseudopomite

• Ca_3.5[V${}_{\mathrm{6}}^{\mathrm{4}+}$V${}_{\mathrm{9}}^{\mathrm{5}+}$O₃₇(CO₃)]•29H₂O

• Ppom

• Blue Streak mine, about 13 km west of the town of Naturita, Bull Canyon, Montrose Co., Colorado, USA (38^∘11^′58^′′ N, 108^∘50^′24^′′ W)

• Anthony R. Kampf*, John M. Hughes, Chi Ma, Joe Marty, and Timothy P. Rose

• *E-mail: akampf@nhm.org

• Closely related to pomite (IMA no. 2021-063; this newsletter)

• Triclinic: $P\stackrel{\mathrm{‾}}{\mathrm{1}}$; structure determined

• a = 12.291(2), b = 12.620(1), c = 20.917(3) Å, α = 77.381(6), β = 85.965(5), γ = 64.367(7)^∘

• 10.94(100), 10.00(73), 8.86(31), 5.32(16), 4.42(11), 3.074(22), 2.953(19), 2.890(18)

• 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 76155

• How to cite: Kampf, A. R., Hughes, J. M., Ma, C., Marty, J., and Rose, T. P.: Pseudopomite, IMA 2021-064, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2021-065

• Cuprodongchuanite

• Pb₄CuZn₂(PO₄)₄(OH)₂

• Cdc

• Village of Sanguozhuang, town of Tangdan, Dongchuan District, city of Kunming, Yunnan Province, China (26^∘07^′36^′′ N, 103^∘00^′19^′′ E)

• Ningyue Sun, Guowu Li*, Yuan Xue, Hongtao Shen, and Jinhua Hao

• *E-mail: liguowu@cugb.edu.cn

• The Cu analogue of dongchuanite (IMA no. 2021-058; this newsletter)

• Triclinic: $P\stackrel{\mathrm{‾}}{\mathrm{1}}$; structure determined

• a = 4.7359(5), b = 8.4995(9), c = 10.292(1) Å, α = 97.25(1), β = 102.06(1), γ = 91.758(8)^∘

• 4.641(90), 3.434(100), 3.253(80), 2.919(60), 2.809(70), 2.761(90), 2.613(70), 2.219(80)

• Type material is deposited in the mineralogical collections of the Geological Museum of China, Xisi, Yangrou Hutong no. 15, Xisi, Beijing 100031, People's Republic of China, catalogue no. M16124 (holotype), and the Crystal Structure Laboratory, China University of Geosciences, Beijing 100083, People's Republic of China, catalogue no. DC-2 (cotype)

• How to cite: Sun, N., Li, G., Xue, Y., Shen, H., and Hao, J.: Cuprodongchuanite, IMA 2021-065, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2019-069/20-F

• Shimenite

• Tl₅Sb_21−yAs_yS₃₄ (9 ≤ y ≤ 10)

• Shmn

• Jiepaiyu mine, Shimen, Changde, Hunan, China (29^∘34^′24^′′ N, 111^∘17^′10^′′ E)

• Dan Topa*, Frank N. Keutsch, Uwe Kolitsch, Christian Lengauer, Gerald Giester, and Chris Stanley

• *E-mail: dan.topa@nhm-wien.ac.at

• Chabournéite group

• Triclinic: $P\stackrel{\mathrm{‾}}{\mathrm{1}}$; structure determined

• a = 8.1137(5), b = 8.6488(6), c = 21.258(1) Å, α = 84.181(4), β = 83.378(4), γ = 89.951(4)^∘

• 4.032(47), 3.993(85), 3.625(84), 3.563(100), 3.033(72), 2.855(52), 2.830(70), 2.737(68)

• Type material is deposited in the mineralogical collections of the Naturhistorisches Museum Wien, Burgring 7, 1010 Vienna, Austria, catalogue number O1197

• How to cite: Topa, D., Keutsch, F. N., Kolitsch, U., Lengauer, C., Giester, G., and Stanley, C.: Shimenite, IMA 2019-069, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

IMA no. 2019-098/20-F

• Dewitite

• Ag_zTl${}_{\mathrm{10}-x-z}$Pb_2xSb${}_{\mathrm{42}-x-y}$As_yS₆₈ (0.09 ≤ x ≤ 2.13, 13.99 ≤ y ≤ 19.79, 0.10 ≤ z ≤ 0.50)

• Dwt

• Jas Roux, La Chapelle-en-Valgaudemar, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France (44^∘48^′45^′′ N, 6^∘19^′18^′′ E)

• Dan Topa*, Uwe Kolitsch, Berthold Stoeger, Frank Keutsch, and Chris Stanley

• *E-mail: dan.topa@nhm-wien.ac.at

• Chabournéite group

• Triclinic: $P\stackrel{\mathrm{‾}}{\mathrm{1}}$; structure determined

• a = 8.626(2), b = 16.351(3), c = 21.892(4) Å, α = 74.96(3), β = 83.59(3), γ = 88.91(3)^∘

• 3.948(50), 3.590(50), 3.561(100), 3.341(48), 2.872(61), 2.813(62), 2.732(48), 2.156(63)

• Type material is deposited in the mineralogical collections of the Naturhistorisches Museum, Burgring 7, 1010 Vienna, Austria, catalogue number O1787

• How to cite: Topa, D., Kolitsch, U., Stoeger, B., Keutsch, F., and Stanley, C.: Dewitite, IMA 2019-098, in: CNMNC Newsletter 63, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-639-2021, 2021.

3.1 An end-member formula for humite, Mg₇(SiO₄)₃F₂

The humite polysomatic series consists of a set of minerals with the general formula n[Mg₂(SiO₄)]•Mg(OH,F)₂, with n = 1, 2, 3, or 4. The valid species and their corresponding chemical formulae, taken from the current IMA List of Minerals, are as follows.

• (n = 1)

• Norbergite, Mg₃(SiO₄)F₂

• (n = 2)

• Chondrodite, Mg₅(SiO₄)₂F₂

• Hydroxylchondrodite, Mg₅(SiO₄)₂(OH)₂

• (n = 3)

• Humite, Mg₇(SiO₄)₃(F,OH)₂

• (n = 4)

• Clinohumite, Mg₉(SiO₄)₄F₂

• Hydroxylclinohumite, Mg₉(SiO₄)₄(OH)₂.

The only species without an end-member formula is humite, Mg₇(SiO₄)₃(F,OH)₂, which has both fluorine and hydroxyl within the same brackets. As in the whole series a root name without a prefix is used for the fluorine end-member, whereas the same root name with the prefix “hydroxyl-” is used for the hydroxyl end-member; the formula Mg₇(SiO₄)₃F₂ has to be assigned to the mineral humite. This is an executive decision taken by the officers of the IMA-CNMNC.

3.2 Renaming of gismondine

Following the report of the zeolite subcommittee, after the approval of the new mineral IMA 2021-043 – gismondine-Sr (see this Newsletter), “gismondine” becomes a series name. Accordingly the mineral previously known as gismondine is renamed gismondine-Ca.

3.3 IMA 20-F: chabournéite group

Proposal 20-F is accepted, and the chabournéite group is established. The group includes the minerals chabournéite, protochabournéite, dalnegroite, shimenite, and dewitite. All members of this group are triclinic, space group $P\stackrel{\mathrm{‾}}{\mathrm{1}}$, with the exception of dalnegroite, which has space group P1.

The ideal formulae of protochabournéite and chabournéite are revised as follows:

• protochabournéite – Tl_4−xPb_2+2xSb${}_{\mathrm{20}-x-y}$As_yS₃₄ (with 0.02 ≤ x ≤ 0.34, 5.71 ≤ y ≤ 6.69).

• chabournéite – Ag_zTl${}_{\mathrm{8}-x-z}$Pb_4+2xSb${}_{\mathrm{40}-x-y}$As_yS₆₈ (with 0.00 ≤ x ≤ 0.40, 16.15 ≤ y ≤ 19.11, 0.04 ≤ z ≤ 0.11).

3.4 IMA 21-D: redefinition of beraunite and discreditation of eleonorite

Proposal 21-D is accepted. The formula of beraunite is revised as Fe${}_{\mathrm{6}}^{\mathrm{3}+}$(PO₄)₄O(OH)₄•6H₂O, based on new EMPA, Mössbauer, and SCXRD data obtained on type material. Eleonorite is discredited, as it is identical to beraunite.

3.5 IMA 21-E: redefinition of minyulite

Proposal 21-E is accepted, and the formula of minyulite is redefined as KAl₂(PO₄)₂F•4H₂O, based on new EMPA data obtained on holotype material, which confirmed that the mineral is (OH)-free and has F as a species-forming constituent.