Journal cover Journal topic
European Journal of Mineralogy An international journal on mineralogy, petrology, geochemistry, and related sciences
Journal topic
EJM | Articles | Volume 33, issue 3
Eur. J. Mineral., 33, 299–304, 2021
https://doi.org/10.5194/ejm-33-299-2021
Eur. J. Mineral., 33, 299–304, 2021
https://doi.org/10.5194/ejm-33-299-2021

CNMNC Newsletter 01 Jun 2021

CNMNC Newsletter | 01 Jun 2021

IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 61

IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 61
Ritsuro Miyawaki1, Frédéric Hatert2, Marco Pasero3, and Stuart J. Mills4 Ritsuro Miyawaki et al.
  • 1Chairman, CNMNC | Department of Geology, National Museum of Nature and Science, 4-1-1 Amakubo, Tsukuba 305-0005, Japan
  • 2Vice-Chairman, CNMNC | Laboratoire de Minéralogie, Université de Liège, Bâtiment B18, Sart Tilman, 4000 Liège, Belgium
  • 3Vice-Chairman, CNMNC | Dipartimento di Scienze della Terra, Università di Pisa, Via Santa Maria 53, 56126 Pisa, Italy
  • 4Secretary, CNMNC | Geosciences, Museum Victoria, P.O. Box 666, Melbourne, Victoria 3001, Australia

Correspondence: Marco Pasero (marco.pasero@unipi.it)

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 X-ray powder 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 European Journal of Mineralogy 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.

1 New mineral proposals approved in April 2021

IMA no. 2020-097

  • Liguowuite

  • WO3

  • Nanyang Village, Huaping County, Yunnan Province, Panzhihua-Xichang region, China (264618.21′′ N, 1012713.86′′ E)

  • Yuan Xue*, Ningyue Sun, Hongping He, Aiqing Chen, and Yiping Yang

  • *E-mail: xue.yuea@163.com

  • Known synthetic analogue

  • Monoclinic: P21/n; structure determined

  • a=7.3258(2), b=7.5477(2), c=7.7113(2) Å, β=90.678(3)

  • 3.855(88), 3.768(88), 3.659(100), 3.104(20), 2.693(43), 2.626(60), 1.827(32), 1.645(27)

  • Type material is deposited in the mineralogical collections of the Geological Museum of China, Xisi, Yangrou Hutong No. 15, Beijing 100083, People's Republic of China, catalogue number M16121 (holotype), and the Crystal Structure Laboratory, China University of Geosciences, Beijing 100083, People's Republic of China, catalogue number NY-5-3Z (cotype)

  • How to cite: Xue, Y., Sun, N., He, H., Chen, A., and Yang, Y.: Liguowuite, IMA 2020-097, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

IMA no. 2020-098

  • Tamuraite

  • Ir5Fe10S16

  • Sisim Placer Zone, river Sisim basin, southern portion of Krasnoyarskiy Kray, central Siberia, not far from Krasnoyarsk, southwestern Eastern Sayans, Russia

  • Andrei Y. Barkov*, Nadezhda D. Tolstykh, and Robert F. Martin

  • *E-mail: ore-minerals@mail.ru

  • The Fe-dominant analogue of kuvaevite

  • Trigonal: R3m

  • a=7.073(1), c=34.277(8) Å

  • 5.774(45), 3.053(43), 3.011(100), 2.996(50), 2.799(55), 2.495(38), 1.770(71), 1.758(65)

  • Type material is deposited in the mineralogical collections of the Central Siberian Geological Museum, Sobolev Institute of Geology and Mineralogy, Akademik Koptyug Avenue no. 3, 630090 Novosibirsk, Russia, catalogue number III-102/2

  • How to cite: Barkov, A. Y., Tolstykh, N. D., and Martin, R. F.: Tamuraite, IMA 2020-098, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

IMA no. 2020-099

  • Garpenbergite

  • Mn6AsSbO10(OH)2

  • Garpenberg, Hedemora, Dalarna County, Sweden

  • Dan Holtstam*, Luca Bindi, Hans-Jürgen Förster, Andreas Karlsson, and Kjell Gatedal

  • *E-mail: dan.holtstam@nrm.se

  • The Mn-deficient analogue of manganostibite

  • Orthorhombic: Ibmm; structure determined

  • a=8.6790(9), b=18.906(2), c=6.1066(6) Å

  • 5.00(25), 4.42(30), 3.48(20), 3.050(30), 2.665(100), 2.616(40), 2.586(25), 1.545(45)

  • Type material is deposited in the mineralogical collections of the Department of Geosciences, Swedish Museum of Natural History, Box 50007, 10405 Stockholm, Sweden, collection number GEO-NRM #20010351 and #20200040

  • How to cite: Holtstam, D., Bindi, L., Förster, H.-J., Karlsson, A., and Gatedal, K.: Garpenbergite, IMA 2020-099, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

IMA no. 2020-100

  • Paratobermorite

  • Ca4(Al0.5Si0.5)2Si4O16(OH)(H2O)2(Ca3H2O)

  • Southern open pit, Bazhenovskoe deposit, Asbest, Sverdlovsk Oblast, Central Urals, Russia

  • Igor V. Pekov*, Natalia V. Zubkova, Nikita V. Chukanov, Stefano Merlino, Vasiliy O. Yapaskurt, Dmitry I. Belakovskiy, Alexander B. Loskutov, Elena A. Novgorodova, Svetlana A. Vozchikova, Sergey N. Britvin, and Dmitry Y. Pushcharovsky

  • *E-mail: igorpekov@mail.ru

  • Tobermorite supergroup

  • Monoclinic: C1121/m; structure determined

  • a=11.2220(4), b=7.3777(2), c=22.9425(8) Å, γ=89.990(3)

  • 11.52(100), 5.46(24), 3.562(17), 3.088(51), 2.982(50), 2.838(20), 2.013(14), 1.848(22)

  • 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 5643/1

  • How to cite: Pekov, I. V., Zubkova, N. V., Chukanov, N. V., Merlino, S., Yapaskurt, V. O., Belakovskiy, D. I., Loskutov, A. B., Novgorodova, E. A., Vozchikova, S. A., Britvin, S. N., and Pushcharovsky, D. Y.: Paratobermorite, IMA 2020-100, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

IMA no. 2020-102

  • Relianceite-(K)

  • K4Mg(V4+O)2(C2O4)(PO3OH)4(H2O)10

  • 125-foot (38.1 m) level of the Rowley mine, ca. 20 km northwest of Theba, Maricopa Co., Arizona, USA (330257′′ N, 1130159′′ W)

  • Anthony R. Kampf*, Mark A. Cooper, Aaron J. Celestian, Chi Ma, and Joe Marty

  • *E-mail: akampf@nhm.org

  • New structure type

  • Monoclinic: Pc; structure determined

  • a=12.404(7), b=9.014(6), c=13.260(8) Å, β=100.80(1)

  • 12.22(100), 6.56(21), 6.28(20), 3.435(19), 3.125(23), 3.039(19), 2.893(22), 2.718(21)

  • 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 75275

  • How to cite: Kampf, A. R., Cooper, M. A., Celestian, A. J., Ma, C., and Marty, J.: Relianceite-(K), IMA 2020-102, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

IMA no. 2020-103

  • Dendoraite-(NH4)

  • (NH4)2NaAl(C2O4)(PO3OH)2(H2O)2

  • 125-foot (38.1 m) level of the Rowley mine, ca. 20 km northwest of Theba, Maricopa Co., Arizona, USA (330257′′ N, 1130159′′ W)

  • Anthony R. Kampf*, Mark A. Cooper, Aaron J. Celestian, Chi Ma, and Joe Marty

  • *E-mail: akampf@nhm.org

  • New structure type

  • Monoclinic: P21/n; structure determined

  • a=10.695(6), b=6.285(4), c=19.227(12) Å, β=90.93(1)

  • 9.65(100), 9.29(54), 5.99(24), 4.738(28), 3.455(40), 3.106(75), 2.975(28), 2.828(33)

  • 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 75275

  • How to cite: Kampf, A. R., Cooper, M. A., Celestian, A. J., Ma, C., and Marty, J.: Dendoraite-(NH4), IMA 2020-103, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

IMA no. 2020-104

  • Stibiogoldfieldite

  • Cu6Cu6(Sb2Te2)S13

  • Mohawk mine, Goldfield mining district, Esmeralda Co., Nevada, USA (374301′′ N, 1171325′′ W)

  • Cristian Biagioni*, Jiri Sejkora, Silvia Musetti, Emil Makovicky, Renato Pagano, Marco Pasero, and Zdeněk Dolníček

  • *E-mail: cristian.biagioni@unipi.it

  • Tetrahedrite group

  • Cubic: I43m; structure determined

  • a=10.347(2) Å

  • 3.644(19), 2.974(100), 2.754(8), 2.576(19), 2.429(7), 2.020(10), 1.821(32), 1.553(13)

  • Type material is deposited in the mineralogical collections of the Museo di Storia Naturale, Università di Pisa, Via Roma 79, Calci (PI), Italy, catalogue number 19926 (holotype), and the Department of Mineralogy and Petrology, National Museum in Prague, Cirkusová 1740, 19300 Prague 9, Czech Republic, catalogue numbers P1P 78/2020 (holotype) and P1P 80/2020 (cotype)

  • How to cite: Biagioni, C., Sejkora, J., Musetti, S., Makovicky, E., Pagano, R., Pasero, M., and Dolníček, Z.: Stibiogoldfieldite, IMA 2020-104, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

IMA no. 2021-001

  • Hydroxylbastnäsite-(La)

  • La(CO3)(OH)

  • Vuoriyarvi alkaline-ultrabasic complex, Murmansk Oblast, North Karelia (near the border with Kola Peninsula), Russia (holotype); Mochalin Log REE deposit, 14 km north of Kyshtym, Chelyabinsk Oblast, South Urals, Russia (554842′′ N, 603346′′ E – cotype)

  • Igor V. Pekov*, Natalia V. Zubkova, Anatoly V. Kasatkin, Nikita V. Chukanov, Natalia N. Koshlyakova, Dmitry A. Ksenofontov, Radek Škoda, Sergey N. Britvin, Anatoly S. Kirillov, Anatoly N. Zaitsev, Aleksey M. Kuznetsov, and Dmitry Y. Pushcharovsky

  • *E-mail: igorpekov@mail.ru

  • Bastnäsite group

  • Hexagonal: P6; structure determined

  • a=12.537(3), c=9.968(2) Å

  • 4.98(39), 3.616(88), 2.926(100), 2.089(41), 2.052(46), 1.927(40), 1.701(24), 1.319(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 numbers 5644/1 (holotype) and 5660/1 (cotype)

  • How to cite: Pekov, I. V., Zubkova, N. V., Kasatkin, A. V., Chukanov, N. V., Koshlyakova, N. N., Ksenofontov, D. A., Škoda, R., Britvin, S. N., Kirillov, A. S., Zaitsev, A. N., Kuznetsov, A. M., and Pushcharovsky, D. Y.: Hydroxylbastnäsite-(La), IMA 2021-001, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

IMA no. 2019-107c

  • Wenjiite

  • Ti10SixPy  x>y, 6(x+y)7

  • Cr-11 orebody, Luobusa ophiolite, about 200 km east-southeast of Lhasa, Kangjinla District, Tibet, China (2911 N, 9218 E; 5300 m a.s.l.)

  • Fahui Xiong*, Xiangzhen Xu, Enrico Mugnaioli, Mauro Gemmi, Richard Wirth, Jingsui Yang, and Edward S. Grew

  • *E-mail: xiongfahui@126.com

  • Isostructural with mavlyanovite and xifengite

  • Hexagonal: P63/mcm; structure determined

  • a=7.3(1), c=5.1(1) Å

  • 2.54(11), 2.39(31), 2.36(17), 2.16 (100), 2.11(39), 2.09(80), 1.48(17), 1.38(19)

  • 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 M16104

  • How to cite: Xiong, F., Xu, X., Mugnaioli, E., Gemmi, M., Wirth, R., Yang, Y., and Grew, E. S.: Wenjiite, IMA 2019-107c, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

IMA no. 2019-112b

  • Kangjinlaite

  • Ti11Si10

  • Cr-11 orebody, Luobusa ophiolite, about 200 km east-southeast of Lhasa, Kangjinla District, Tibet, China (2911 N, 9218 E; 5300 m a.s.l.)

  • Fahui Xiong*, Xiangzhen Xu, Enrico Mugnaioli, Mauro Gemmi, Richard Wirth, Edward S. Grew, and Jingsui Yang

  • *E-mail: xiongfahui@126.com

  • Isostructural with synthetic Ho11Ge10

  • Tetragonal: I4/mmm; structure determined

  • a=9.4(2), c=13.5(3) Å

  • 2.36(34), 2.28(87), 2.27(100), 2.24(35), 2.23(68), 2.12(22), 2.05(37), 1.58(17)

  • 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 M16104

  • How to cite: Xiong, F., Xu, X., Mugnaioli, E., Gemmi, M., Wirth, R., Grew, E. S., and Yang, Y.: Kangjinlaite, IMA 2019-112b, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

IMA no. 2020-095a

  • Beershevaite

  • CaFe33+(PO4)3O

  • In paralavas of the Halamish Wadi, Hatrurim basin, southern Negev Desert, Israel (310947′′ N, 351757′′ E)

  • Sergey N. Britvin*, Mikhail N. Murashko, Maria G. Krzhizhanovskaya, Yevgeny Vapnik, Natalia S. Vlasenko, Oleg S. Vereshchagin, Vladimir N. Bocharov, and Evgeny A. Vasiliev

  • *E-mail: sbritvin@gmail.com

  • Known synthetic analogue

  • Monoclinic: P21/m; structure determined

  • a=7.498(5), b=6.356(4), c=10.128(7) Å, β=99.88(1)

  • 10.08(39), 4.52(100), 3.85(72), 3.696(98), 3.182(95), 2.947(91), 2.865(48), 2.756(42)

  • 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 5628/1

  • How to cite: Britvin, S. N., Murashko, M. N., Krzhizhanovskaya, M. G., Vapnik, Y., Vlasenko, N. S., Vereshchagin, O. S., Bocharov, V. N., and Vasiliev, E. A.: Beershevaite, IMA 2020-095a, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

2 New mineral proposals approved in May 2021

IMA no. 2021-003

  • Karlditmarite

  • Cu9O4(PO4)2(SO4)2

  • Arsenatnaya fumarole, second scoria cone of the Northern Breakthrough of the Great Tolbachik fissure eruption, Tolbachik volcano, Kamchatka, Far Eastern Region, Russia (5541 N, 16014 E; 1200 m a.s.l.)

  • Oleg I. Siidra*, Evgeny V. Nazarchuk, Leonid A. Pautov, Artem S. Borisov, and Evgeniya Y. Avdontseva

  • *E-mail: o.siidra@spbu.ru

  • New structure type

  • Triclinic: P1; structure determined

  • a=6.1256(7), b=7.9192(8), c=7.9866(8) Å, α=75.173(2), β=86.639(2), γ=88.660(2)

  • 7.72(100), 6.28(37), 4.769(25), 4.262(31), 3.750(22), 3.310(26), 3.283(31), 3.199(18)

  • 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 5589/1

  • How to cite: Siidra, O. I., Nazarchuk, E. V., Pautov, L. A., Borisov, A. S., and Avdontseva, E. Y.: Karlditmarite, IMA 2021-003, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

IMA no. 2021-005

  • Milkovoite

  • Cu4O(PO4)(AsO4)

  • Arsenatnaya fumarole, second scoria cone of the Northern Breakthrough of the Great Tolbachik fissure eruption, Tolbachik volcano, Kamchatka, Far Eastern Region, Russia (5541 N, 16014 E; 1200 m a.s.l.)

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

  • *E-mail: o.siidra@spbu.ru

  • The P-As analogue of kozyrevskite

  • Orthorhombic: Pnma; structure determined

  • a=8.1865(7), b=6.3559(5), c=13.668(1) Å

  • 3.413(100), 3.156(48), 3.043(82), 2.897(31), 2.868(42), 2.709(80), 2.684(42), 1.859(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 5590/1

  • How to cite: Siidra, O. I., Nazarchuk, E. V., Pautov, L. A., Borisov, A. S., and Kozin, M. S.: Milkovoite, IMA 2021-005, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

IMA no. 2021-007

  • Steudelite

  • Na3(K17Ca7)Ca4(Al24Si24O96)(SO3)6F64H2O

  • Biachella Valley, Sacrofano Caldera, Sacrofano (RM), Latium, Italy

  • Nikita V. Chukanov*, Natalia V. Zubkova, Dmitry A. Varlamov, Igor V. Pekov, Dmitry I. Belakovskiy, Sergey N. Britvin, Konstantin V. Van, Vera N. Ermolaeva, Svetlana A. Vozchikova, and Dmitry Y. Pushcharovsky

  • *E-mail: nikchukanov@yandex.ru

  • Cancrinite group

  • Hexagonal: P62c; structure determined

  • a=12.8953(1), c=21.2778(3) Å

  • 11.15(28), 4.799(25), 3.973(16), 3.721(47), 3.305(100), 2.661(17), 2.471(14), 2.149(21)

  • 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 5665/1

  • How to cite: Chukanov, N. V., Zubkova, N. V., Varlamov, D. A., Pekov, I. V., Belakovskiy, D. I., Britvin, S. N., Van, K. V., Ermolaeva, V. N., Vozchikova, S. A., and Pushcharovsky, D. Y.: Steudelite, IMA 2021-007, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

IMA no. 2021-010

  • Oberwolfachite

  • SrFe33+(AsO4)(SO4)(OH)6

  • Clara mine, Oberwolfach baryte mining area, Wolfach, Schwarzwald (Black Forest), Baden-Württemberg, Germany (482246′′ N, 81344′′ E)

  • Nikita V. Chukanov*, Natalia V. Zubkova, Gerhard Möhn, Dmitry A. Varlamov, Igor V. Pekov, Dmitry A. Ksenofontov, Atali A. Agakhanov, Sergey N. Britvin, Natalia N. Koshlyakova, Joy Desor, Vera N. Ermolaeva, and Dmitry Y. Pushcharovsky

  • *E-mail: nikchukanov@yandex.ru

  • Alunite supergroup

  • Trigonal: R3m; structure determined

  • a=7.3270(3), c=17.0931(9) Å

  • 5.95(56), 3.664(37), 3.117(16), 3.082(100), 2.548(15), 2.280(22), 1.983(26), 1.832(19)

  • 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 5674/1

  • How to cite: Chukanov, N. V., Zubkova, N. V., Möhn, G., Varlamov, D. A., Pekov, I. V., Ksenofontov, D. A., Agakhanov, A. A., Britvin, S. N., Koshlyakova, N. N., Desor, J., Ermolaeva, V. N., and Pushcharovsky, D. Y. (2021) Oberwolfachite, IMA 2021-010, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

IMA no. 2021-011

  • Ryabchikovite

  • CuMgSi2O6

  • Arsenatnaya fumarole, second scoria cone of the Northern Breakthrough of the Great Tolbachik fissure eruption, Tolbachik volcano, Kamchatka, Far Eastern Region, Russia (5541 N, 16014 E; 1200 m a.s.l.)

  • Nadezhda V. Shchipalkina*, Oleg S. Vereshchagin, Igor V. Pekov, Dmitry I. Belakovskiy, Natalia N. Koshlyakova, Vladimir V. Shilovskikh, Dmitriy V. Pankin, Sergey N. Britvin, Fedor D. Sandalov, and Evgeny G. Sidorov

  • *E-mail: estel58@yandex.ru

  • Pyroxene group

  • Monoclinic: P21/c

  • a=9.731(9), b=8.929(8), c=5.221(4) Å, β=110.00(6)

  • 4.403(38), 4.307(27), 3.746(32), 3.291(27), 3.177(100), 2.876(75), 2.456(26), 2.215(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 5642/1

  • How to cite: Shchipalkina, N. V., Vereshchagin, O. S., Pekov, I. V., Belakovskiy, D. I., Koshlyakova, N. N., Shilovskikh, V. V., Pankin, D. V., Britvin, S. N., Sandalov, F. D., and Sidorov, E. G.: Ryabchikovite, IMA 2021-011, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

IMA no. 2021-014

  • Lisanite

  • CaNiP2O7

  • Halamish Wadi (Nahal Halamish), Hatrurim basin, Negev Desert, Israel (310947′′ N, 351757′′ E)

  • Sergey N. Britvin*, Michail N. Murashko, Yevgeny Vapnik, Natalia S. Vlasenko, Oleg S. Vereshchagin, and Vladimir N. Bocharov

  • *E-mail: sbritvin@gmail.com

  • The Ni analogue of anastasenkoite

  • Triclinic: P1; structure determined

  • a=6.474(2), b=6.526(2), c=6.519(2) Å, α=66.57(3), β=82.77(2), γ=87.35(2)

  • 4.389(13), 3.214(21), 3.029(51), 2.994(45), 2.970(17), 2.835(100), 2.718(8), 1.772(10)

  • 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 5629/1

  • How to cite: Britvin, S. N., Murashko, M. N., Vapnik, Y., Vlasenko, N. S., Vereshchagin, O. S., and Bocharov, V. N.: Lisanite, IMA 2021-014, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

IMA no. 2021-016

  • Erssonite

  • CaMg7Fe23+(OH)18(SO4)212H2O

  • Långban mine, Filipstad district, Värmland county, Sweden (595119′′ N, 141553′′ E)

  • Elena S. Zhitova*, Nikita V. Chukanov, Erik Jonsson, Igor V. Pekov, Dmitry I. Belakovsky, Marina F. Vigasina, Natalia V. Zubkova, Konstantin V. Van, and Sergey N. Britvin

  • *E-mail: zhitova_es@mail.ru

  • Hydrotalcite supergroup

  • Trigonal: P3c1; structure determined

  • a=9.3550(5), c=22.546(1) Å

  • 11.22(90), 5.63(64), 4.670(100), 3.756(35), 2.626(64), 2.435(66), 2.193(40), 1.951(45)

  • 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 5669/1, and the Swedish Museum of Natural History (Naturhistoriska Riksmuseet), P.O. Box 50007, 104 05 Stockholm, Sweden, catalogue number GEO-NRM #20210001

  • How to cite: Zhitova, E. S., Chukanov, N. V., Jonsson, E., Pekov, I. V., Belakovsky, D. I., Vigasina, M. F., Zubkova, N. V., Van, K. V., and Britvin, S. N.: Erssonite, IMA 2021-016, in: CNMNC Newsletter 61, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-299-2021, 2021.

3 Confirmation of siderazot as a valid species

In the IMA List of Minerals siderazot is tagged as Q (i.e. questionable), for the reason that no data on that mineral have been published since the original description (Ann. Phys. Chem., 157, 165–172, 1876). Recently a detailed study on holotype siderazot, which is preserved in the Natural History Museum, London (UK), was carried out (Minerals, 11, art. 290, 2021). New chemical (EMPA) and structural (Rietveld) data were obtained. Moreover Raman and reflectance data are given. The complete set of data indicate that siderazot possesses the ε-Fe3N-type structure. In the light of these new data the status of siderazot can be changed from Q to Rd (i.e. redefined). The chemical formula of siderazot is slightly modified from FeNx (with x ≈0.25–0.5) to Fe3N1.33.

4 Nomenclature/classification proposals approved in May 2021

4.1 IMA 21-A: discreditation of the mineral name hartite and reinstatement of the name branchite

Proposal 21-A is accepted, and the mineral name hartite is discredited and replaced by the name branchite, which has historical priority.

4.2 IMA 21-B: redefinition of gunterite

Proposal 21-B is accepted, and the ideal formula of gunterite is revised from Na4(H2O)16(H2V10O28)6H2O to Na4Ca[V10O28]20H2O, based on new structural data and electron-probe microanalyses.

4.3 IMA 21-C: redefinition of jixianite as hydroplumboelsmoreite

Proposal 21-C is accepted, and the questionable species jixianite is renamed hydroplumboelsmoreite. The mineral hydroplumboelsmoreite belongs to the pyrochlore supergroup and has the simplified formula (Pb,)2(W,Fe3+)2O6(H2O). More specifically it belongs to the elsmoreite group (W6+ dominant at the B site), with Pb dominant at the A site and H2O dominant at the anionic Y site.

4.4 Mineral symbols

The proposal to establish mineral symbols has been approved. All existing mineral species have been assigned a symbol. The list of current mineral symbols will be available and kept up to date on the CNMNC website. Mineral symbols will now be required in all new mineral proposals.

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