Eur. J. Mineral., 33, 299–304, 2021
https://doi.org/10.5194/ejm-33-299-2021© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

IMA Commission on New Minerals, Nomenclature andClassification (CNMNC) – Newsletter 61
Ritsuro Miyawaki1 , Frédéric Hatert2 , Marco Pasero3 , and Stuart J. Mills4
1 Chairman, CNMNC | Department of Geology, National Museum of Nature and Science,

4-1-1 Amakubo, Tsukuba 305-0005, Japan
2 Vice-Chairman, CNMNC | Laboratoire de Minéralogie, Université de Liège,

Bâtiment B18, Sart Tilman, 4000 Liège, Belgium
3 Vice-Chairman, CNMNC | Dipartimento di Scienze della Terra, Università di Pisa,

Via Santa Maria 53, 56126 Pisa, Italy
4 Secretary, CNMNC | Geosciences, Museum Victoria, P.O. Box 666, Melbourne, Victoria 3001, Australia

Correspondence: Marco Pasero (marco.pasero@unipi.it)
Received: 27 May 2021 – Published: 1 June 2021

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:

It is still a requirement for the authors to publish a fulldescription of the new mineral.
No other information will be released by the commission.

– mineral name, if the authors agree on its release prior to
the full description appearing in press;

1– chemical formula;

IMA no. 2020-097– type locality;

Liguowuite
WO3
Nanyang Village, Huaping County, Yunnan Province,
Panzhihua-Xichang region, China (26◦ 460 18.2100 N,
101◦ 270 13.8600 E)
Yuan Xue*, Ningyue Sun, Hongping He, Aiqing Chen, andYiping Yang
*E-mail: xue.yuea@163.com
Known synthetic analogue
Monoclinic: P 21 /n; structure determineda = 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,– full authorship of proposal;– e-mail address of corresponding author;– relationship to other minerals;– crystal system, space group, structure determined, yesor 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 offull 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 thecommission’s website.

New mineral proposals approved in April 2021

Published by Copernicus Publications on behalf of the European mineralogical societies DMG, SEM, SIMP & SFMC.

300
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-33-2992021, 2021.
IMA no. 2020-098
Tamuraite
Ir5 Fe10 S16
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 Instituteof 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-33-2992021, 2021.
IMA no. 2020-099
Garpenbergite
Mn6 AsSbO10 (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 2020099, in: CNMNC Newsletter 61, Eur. J. Mineral., 33,
https://doi.org/10.5194/ejm-33-299-2021, 2021.

Eur. J. Mineral., 33, 299–304, 2021

R. Miyawaki et al.: CNMNC Newsletter 61
IMA no. 2020-100
Paratobermorite
Ca4 (Al0.5 Si0.5 )2 Si4 O16 (OH)(H2 O)2 q(Ca q3H2 O)
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 determineda = 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)K4 Mg(V4+ O)2 (C2 O4 )(PO3 OH)4 (H2 O)10125-foot (38.1 m) level of the Rowley mine, ca. 20 km northwest of Theba, Maricopa Co., Arizona, USA (33◦ 020 5700 N,
113◦ 010 5900 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 determineda = 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 collectionsof 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 2020102, in: CNMNC Newsletter 61, Eur. J. Mineral., 33,
https://doi.org/10.5194/ejm-33-299-2021, 2021.
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R. Miyawaki et al.: CNMNC Newsletter 61

301

IMA no. 2020-103

IMA no. 2021-001

Dendoraite-(NH4 )(NH4 )2 NaAl(C2 O4 )(PO3 OH)2 (H2 O)2125-foot (38.1 m) level of the Rowley mine, ca. 20 km northwest of Theba, Maricopa Co., Arizona, USA (33◦ 020 5700 N,
113◦ 010 5900 W)
Anthony R. Kampf*, Mark A. Cooper, Aaron J. Celestian,
Chi Ma, and Joe Marty*E-mail: akampf@nhm.org
New structure type
Monoclinic: P 21 /n; structure determineda = 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 collectionsof 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 2020103, in: CNMNC Newsletter 61, Eur. J. Mineral., 33,
https://doi.org/10.5194/ejm-33-299-2021, 2021.

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 northof Kyshtym, Chelyabinsk Oblast, South Urals, Russia(55◦ 480 4200 N, 60◦ 330 4600 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, andDmitry Y. Pushcharovsky*E-mail: igorpekov@mail.ru
Bastnäsite group
Hexagonal: P 6; structure determineda = 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. 2020-104
Stibiogoldfieldite
Cu6 Cu6 (Sb2 Te2 )S13
Mohawk mine, Goldfield mining district, Esmeralda Co.,
Nevada, USA (37◦ 430 0100 N, 117◦ 130 2500 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: I 43m; structure determineda = 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), andthe 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-33-2992021, 2021.

https://doi.org/10.5194/ejm-33-299-2021

IMA no. 2019-107c
Wenjiite
Ti10 Six Py x > y, 6 ≤ (x + y) ≤ 7
Cr-11 orebody, Luobusa ophiolite, about 200 km eastsoutheast of Lhasa, Kangjinla District, Tibet, China(29◦ 110 N, 92◦ 180 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: P 63 /mcm; structure determineda = 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
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2019-107c, in: CNMNC Newsletter 61, Eur. J. Mineral., 33,
https://doi.org/10.5194/ejm-33-299-2021, 2021.

R. Miyawaki et al.: CNMNC Newsletter 61
Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-2992021, 2021.

IMA no. 2019-112b
2
Kangjinlaite
Ti11 Si10
Cr-11 orebody, Luobusa ophiolite, about 200 km eastsoutheast of Lhasa, Kangjinla District, Tibet, China(29◦ 110 N, 92◦ 180 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 Ho11 Ge10
Tetragonal: I 4/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
CaFe3+
3 (PO4 )3 O
In paralavas of the Halamish Wadi, Hatrurim basin, southern
Negev Desert, Israel (31◦ 090 4700 N, 35◦ 170 5700 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: P 21 /m; structure determineda = 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, 299–304, 2021

New mineral proposals approved in May 2021

IMA no. 2021-003
Karlditmarite
Cu9 O4 (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(55◦ 410 N, 160◦ 140 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: P 1; structure determineda = 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
Cu4 O(PO4 )(AsO4 )Arsenatnaya fumarole, second scoria cone of the Northern Breakthrough of the Great Tolbachik fissure eruption,
Tolbachik volcano, Kamchatka, Far Eastern Region, Russia(55◦ 410 N, 160◦ 140 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
https://doi.org/10.5194/ejm-33-299-2021

R. Miyawaki et al.: CNMNC Newsletter 61
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 (K17 Ca7 )Ca4 (Al24 Si24 O96 )(SO3 )6 F6 q4H2 O
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: P 62c; structure determineda = 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-33-2992021, 2021.
IMA no. 2021-010
Oberwolfachite
SrFe3+
3 (AsO4 )(SO4 )(OH)6
Clara mine, Oberwolfach baryte mining area, Wolfach,Schwarzwald (Black Forest), Baden-Württemberg, Germany(48◦ 220 4600 N, 8◦ 130 4400 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 determineda = 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
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303
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-33-2992021, 2021.
IMA no. 2021-011
Ryabchikovite
CuMgSi2 O6
Arsenatnaya fumarole, second scoria cone of the Northern Breakthrough of the Great Tolbachik fissure eruption,
Tolbachik volcano, Kamchatka, Far Eastern Region, Russia(55◦ 410 N, 160◦ 140 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: P 21 /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-33299-2021, 2021.
IMA no. 2021-014
Lisanite
CaNiP2 O7
Halamish Wadi (Nahal Halamish), Hatrurim basin, Negev
Desert, Israel (31◦ 090 4700 N, 35◦ 170 5700 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: P 1; structure determineda = 6.474(2), b = 6.526(2), c = 6.519(2) Å, α = 66.57(3),β = 82.77(2), γ = 87.35(2)◦Eur. J. Mineral., 33, 299–304, 2021

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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-33-2992021, 2021.

R. Miyawaki et al.: CNMNC Newsletter 61(i.e. redefined). The chemical formula of siderazot is slightly
modified from FeNx (with x ≈ 0.25–0.5) to Fe3 N1.33 .
4Nomenclature/classification proposals approved in
May 2021

4.1

IMA 21-A: discreditation of the mineral namehartite 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.

IMA no. 2021-016
4.2
Erssoniteq
CaMg7 Fe3+
2 (OH)18 (SO4 )2 12H2 O
Långban mine, Filipstad district, Värmland county, Sweden(59◦ 510 1900 N, 14◦ 150 5300 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: P 3c1; 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

IMA 21-B: redefinition of gunterite

Proposal 21-B is accepted, and the ideal formula of gunterite is revised from Na4 (H2 O)16 (H2 V10 O28 ) q6H2 O to
Na4 Ca[V10 O28 ] q20H2 O, based on new structural data andelectron-probe microanalyses.
4.3

IMA 21-C: redefinition of jixianite ashydroplumboelsmoreite

Proposal 21-C is accepted, and the questionable species jixianite is renamed hydroplumboelsmoreite. The mineral hydroplumboelsmoreite belongs to the pyrochlore supergroupand has the simplified formula (Pb,)2 (W,Fe3+ )2 O6 (H2 O).
More specifically it belongs to the elsmoreite group (W6+dominant at the B site), with Pb dominant at the A site andH2 O 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 asymbol. 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.

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 havebeen 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 reflectancedata are given. The complete set of data indicate that siderazot possesses the ε-Fe3 N-type structure. In the light of thesenew data the status of siderazot can be changed from Q to Rd
Eur. J. Mineral., 33, 299–304, 2021

https://doi.org/10.5194/ejm-33-299-2021