Eur. J. Mineral., 34, 463–468, 2022
https://doi.org/10.5194/ejm-34-463-2022© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

IMA Commission on New Minerals, Nomenclature andClassification (CNMNC) – Newsletter 69
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)
Published: 19 October 2022

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)

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. 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 August 2022

– 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 X-ray powder diffraction pattern– type specimen repository and specimen number– citation details for the mineral prior to publication offull description

IMA no. 2022-023
Changesite-(Y)(Ca8 Y)Fe2+ (PO4 )7
Cgs-Y
Northeastern Oceanus Procellarum, the Moon (retrieved
from the Chang’e 5 mission)Ting Li∗ , Ziying Li, Zhixin Huang, Jun Zhong, Guang Fan,
Dongfa Guo, Mingkuan Qin, Jielin Zhang, Junjie Li, Hanbin Liu, Linfei Qiu, Fenggang Wang, Sheng He, Apeng Yu,
Ruiping Liu, Yong Wu, Liumin Deng, Zongyao Tai, Yongzhi
He, and Yan Lin∗ E-mail: liting_c@126.com
Cerite supergroup
Trigonal: R3c; structure determineda = 10.3957(4), c = 37.207(2) Å
8.104(17), 6.469(23), 5.198(32), 4.794(24), 3.196(37),2.868(83), 2.599(100), 1.719(19)Published by Copernicus Publications on behalf of the European mineralogical societies DMG, SEM, SIMP & SFMC.

464
Type material is deposited in the mineralogical collections of
the National Astronomical Observatories, Chinese Academyof Sciences, 20A Datun Road, Chaoyang District, Beijing 100101, People’s Republic of China. catalogue number
CE5C0600YJFM002GP
How to cite: Li, T., Li, Z., Huang, Z., Zhong, J., Fan, G., Guo,D., Qin, M., Zhang, J., Li, J., Liu, H., Qiu, L., Wang, F., He,
S., Yu, A., Liu, R., Wu, Y., Deng, L., Tai, Z., He, Y., and Lin,Y.: Changesite-(Y), IMA 2022-023, in: CNMNC Newsletter
69, Eur. J. Mineral., 34, https://doi.org/10.5194/ejm-34-4632022, 2022.

R. Miyawaki et al.: CNMNC Newsletter 69
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 5862/1
How to cite: Murashko, M. N., Britvin, S. N.,
Krzhizhanovskaya, M. G., Vereshchagin, O. S., Vapnik, Y., Vlasenko, N. S., Shelukhina, Y. S., and Bocharov, V.
N.: Hanswilkeite, IMA 2022-041, in: CNMNC Newsletter
69, Eur. J. Mineral., 34, https://doi.org/10.5194/ejm-34-4632022, 2022.
IMA no. 2022-043

IMA no. 2022-040
Tennantite-(Mn)
Cu6 (Cu4 Mn2 )As4 S13
Tnt-MnChoquelimpie mine, Ticnamar area, Parinacota Province, Arica y Parinacota, Chile (18◦ 190 2500 S, 69◦ 160 3800 W)
Frank Keutsch∗ , Uwe Kolitsch, Dan Topa, and Chris Stanley∗ E-mail: keutsch@seas.harvard.edu
Tetrahedrite group
Cubic: I 43m; structure determineda = 10.285(1) Å
4.199(4), 3.636(4), 2.969(100), 2.749(4), 2.571(17),1.878(6), 1.818(45), 1.550(23)Type material is deposited in the collections of the Naturhistorisches Museum Wien, Burgring 7, 1010 Vienna, Austria,
catalogue number O 2509
How to cite: Keutsch, F., Kolitsch, U., Topa, F., and Stanley,
C.: Tennantite-(Mn), IMA 2022-040, in: CNMNC Newsletter 69, Eur. J. Mineral., 34, https://doi.org/10.5194/ejm-34463-2022, 2022.
IMA no. 2022-041
Hanswilkeite
KFeS2
Hsw
In abandoned open pit at the Nahal Gorer (wadi
Gorer), Hatrurim basin, Negev Desert, Israel (31◦ 120 2200 N,
35◦ 140 3700 E)
Mikhail N. Murashko, Sergey N. Britvin∗ , Maria G.
Krzhizhanovskaya, Oleg S. Vereshchagin, Yevgeny Vapnik,
Natalia S. Vlasenko, Yulia S. Shelukhina, and Vladimir N.
Bocharov∗ E-mail: sbritvin@gmail.com
Known synthetic analogue
Monoclinic: C2/c; structure determineda = 7.0914(5),b = 11.3154(5),c = 5.3992(3) Å,
β = 113.244(7)◦5.68(100), 3.270(31), 3.227(29), 2.921(45), 2.830(6),2.510(12), 2.198(12), 1.880(10)Eur. J. Mineral., 34, 463–468, 2022

PohlitePb7 (IO3 )(OH)4 Cl9Poh
La Compañia mine, Sierra Gorda, Antofagasta Province,
Antofagasta, Chile (22◦ 560 2700 S, 69◦ 200 3700 W)
Anthony R. Kampf∗ , George E. Harlow, and Chi Ma∗ E-mail: akampf@nhm.org
New structure type
Triclinic: P 1; structure determineda = 7.3366(5),b = 9.5130(9),c = 16.243(1) Å,
α = 81.592(7), β = 84.955(7), γ = 89.565(6)◦5.77(34), 3.818(91), 3.674(85), 3.399(47), 3.321(38),1.994(45), 2.486(40), 2.378(100)
Cotype material is deposited in the collections of the American Museum of Natural History, 200 Central Park West, New
York, NY 10024, USA, catalogue number 115471, and the
Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue
numbers 76251 and 76252
How to cite: Kampf, A. R., Harlow, G. E., and Ma, C.:
Pohlite, IMA 2022-043, in: CNMNC Newsletter 69, Eur.
J. Mineral., 34, https://doi.org/10.5194/ejm-34-463-2022,
2022.
IMA no. 2022-046
Bakakinite
Ca2 V2 O7
Bkkn
Arsenatnaya fumarole, second scoria cone of the northern breakthrough of the great Tolbachik fissure eruption,
Tolbachik volcano, Kamchatka Peninsula, Far East, Russia(55◦ 410 N, 160◦ 140 E; 1200 m a.s.l.)
Igor V. Pekov∗ , Atali A. Agakhanov, Natalia N.
Koshlyakova, Natalia V. Zubkova, Vasiliy O. Yapaskurt,
Sergey N. Britvin, Marina F. Vigasina, Anna G. Turchkova,
and Maria A. Nazarova∗ E-mail: igorpekov@mail.ru
Known synthetic analogue
Triclinic: P 1
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R. Miyawaki et al.: CNMNC Newsletter 69

465

a = 6.6241(4),b = 6.9231(5),c = 7.0050(4) Å,
α = 86.885(7), β = 63.696(6), γ = 83.300(7)◦4.643(34), 3.261(18), 3.135(84), 3.106(100), 3.024(25),
2.959(77), 1.793(19), 1.683(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 5872/1
How to cite: Pekov, I. V., Agakhanov, A. A., Koshlyakova, N.
N., Zubkova, N. V., Yapaskurt, V. O., Britvin, S. N., Vigasina,
M. F., Turchkova, A. G., and Nazarova, M. A.: Bakakinite,
IMA 2022-046, in: CNMNC Newsletter 69, Eur. J. Mineral.,
34, https://doi.org/10.5194/ejm-34-463-2022, 2022.

6.587(88), 4.160(96), 3.098(100), 2.859(57), 2.547(24),2.244(39), 2.082(28), 1.706(25)Type material is deposited in the mineralogical collections of
the Geological Museum of China, Xisi, Yangrou Hutong No.
15, Xicheng District, Beijing, People’s Republic of China,catalogue number M16135 (holotype), and the Crystal Structure Laboratory, China University of Geosciences, Beijing
100083, People’s Republic of China, catalogue number SJS1 (cotype)
How to cite: Sun, N., Li, G., Li, C., Shen, H.,
Xue, Y., and Hao, J.: Shijiangshanite, IMA 2022029, in: CNMNC Newsletter 69, Eur. J. Mineral., 34,
https://doi.org/10.5194/ejm-34-463-2022, 2022.

IMA no. 2022-047

IMA no. 2022-045

Zhengminghuaite
Cu6 Fe3 As4 S12
Zmh
Zimudang gold deposit, Guizhou Province, China(25◦ 340 33.600 N, 105◦ 280 53.400 E)
Xuexiang Gu∗ , Yongmei Zhang, Guang Fan, Ting Li, Shuyi
Dong, Yiwei Peng, Yingshuai Zhang, and Ling Li∗ E-mail: xuexiang_gu@163.com
Nowackiite isotypic series
Trigonal: R3; structure determineda = 13.5373(2), c = 9.235(1) Å
3.079(67), 3.067(100), 2.659(90), 1.882(99), 1.877(84),1.606(93), 1.603(83), 1.601(85)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
M16136
How to cite: Gu, X., Zhang, Y., Fan, G., Li, T., Dong, S.,
Peng, Y., Zhang, Y., and Li, L.: Zhengminghuaite, IMA
2022-047, in: CNMNC Newsletter 69, Eur. J. Mineral., 34,
https://doi.org/10.5194/ejm-34-463-2022, 2022.

Kayupovaite
Na2 Mn10 [(Si14 Al2 )O38 (OH)8 ] q 7H2 O
KypUshkatyn-III Mn–Fe deposit, near the town of Zhairem,
Karagandy
Province,
Kazakhstan(48◦ 160 0600 N,◦
000
70 10 43 E)
Oleg S. Vereshchagin∗ , Sergey N. Britvin, Aleksey I. Brusnitsyn, Anastasia K. Shagova, Elena N. Perova, Igor V.
Pekov, Vladimir V. Shilovskikh, Natalia S. Vlasenko, Evgeniya Y. Avdontseva, Natalia V. Platonova, and Vladimir N.
Bocharov∗ E-mail: o.vereshchagin@spbu.ru
The Na-dominant analogue of bannisterite
Monoclinic: C2/c; structure determineda = 24.9149(9), b = 16.4343(5), c = 22.3974(7) Å, β =94.408(3)◦12.34(100), 3.45(8), 3.09(8), 2.85(12), 2.642(11), 2.614(7),2.414(7), 2.393(6)Type material is deposited in the collections of the Mineralogical Museum of the Department of Mineralogy, St Petersburg State University, Universitetskaya Emb. 7/9, St Petersburg 199034, Russia, catalogue number ML OF 458
How to cite: Vereshchagin, O. S., Britvin, S. N., Brusnitsyn, A. I., Shagova, A. K., Perova, E. N., Pekov, I. V.,
Shilovskikh, V. V., Vlasenko, N. S., Avdontseva, E. Y.,
Platonova, N. V., and Bocharov, V. N.: Kayupovaite, IMA
2022-045, in: CNMNC Newsletter 69, Eur. J. Mineral., 34,
https://doi.org/10.5194/ejm-34-463-2022, 2022.

2

New mineral proposals approved in September 2022

IMA no. 2022-029
Shijiangshanite
Pb3 CaAl(Si5 O14 )(OH)3 q 3H2 O
Sjs
Shijiangshan mine, Linxi County, Chifeng, Inner Mongolia,
China (43◦ 460 3700 N, 118◦ 060 4900 E)
Ningyue Sun, Guowu Li∗ , Chang Li, Hongtao Shen, Yuan
Xue, and Jinhua Hao∗ E-mail: liguowu@cugb.edu.cn
Chemically and structurally related to wickenburgite
Trigonal: R3c; structure determined
a = 8.7257(3), c = 39.189(3) Åhttps://doi.org/10.5194/ejm-34-463-2022

IMA no. 2022-050
Zhenruite(MoO3 )2 q H2 O
ZhrFreedom no. 2 mine, central mining area, Marysvale volcanic
field, Piute Co., Utah, USA (38◦ 290 4300 N, 112◦ 120 5500 W)
Xiangping Gu∗ , Hexiong Yang, and Michael M. Scott
Eur. J. Mineral., 34, 463–468, 2022

466
∗ E-mail: guxp2004@163.com

Known synthetic analogue
Monoclinic: P 21 /m; structure determined
a = 9.6790(6),b = 3.7065(2),c = 7.1029(4) Å,
β = 102.391(5)◦6.93(68), 4.73(47), 3.565(24), 3.183(100), 3.139(43),3.003(31), 2.281(20), 2.107(20)Type material is deposited in the collections of the Universityof Arizona Alfie Norville Gem & Mineral Museum, 15 N
Church Ave, Tucson, AZ 85701, USA, catalogue no. 22720(holotype), and the RRUFF Project, deposition no. R220010(cotype)
How to cite: Gu, X., Yang, H., and Scott, M. M.: Zhenruite,
IMA 2022-050, in: CNMNC Newsletter 69, Eur. J. Mineral.,
34, https://doi.org/10.5194/ejm-34-463-2022, 2022.

R. Miyawaki et al.: CNMNC Newsletter 69
a = 8.319(1),b = 3.616(1),c = 6.276(2) Å,
β=104.54(2)◦4.015(54), 3.033(25), 2.780(100), 2.172(20), 1.911(16),1.811(25), 1.653(13), 1.513(14)Type material is deposited in the collections of Sobolev Institute of Geology and Mineralogy, Siberian Branch of theRussian Academy of Sciences, Central Siberian GeologicalMuseum, Akademika Koptyuga 3, Novosibirsk 630090, Russia, catalogue number IV-6/1
How to cite: Tolstykh, N., Kasatkin, A, Nestola, F., Vymazalová, A., Agakhanov, A., Palyanova, G., and Korolyuk,
V.: Auroselenide, IMA 2022-052, in: CNMNC Newsletter
69, Eur. J. Mineral., 34, https://doi.org/10.5194/ejm-34-4632022, 2022.
IMA no. 2022-053

IMA no. 2022-051
Chinleite-(Nd)NaNd(SO4 )2 (H2 O)
Chi-NdMarkey mine, Red Canyon, White Canyon District, San Juan
Co., Utah, USA (37◦ 320 5700 N, 110◦ 180 0800 W)
Anthony R. Kampf∗ , Chi Ma, and Joe Marty∗ E-mail: akampf@nhm.org
The Nd analogue of chinleite-(Y)Trigonal: P 32 21; structure determineda = 6.9540(7), c = 12.8590(9) Å
6.02(50), 5.46(70), 3.479(44), 3.014(84), 2.837(100),
2.148(38), 1.859(55), 1.706(27)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 76253 and 76254
How to cite: Kampf, A. R., Ma, C., and Marty, J.: Chinleite(Nd), IMA 2022-051, in: CNMNC Newsletter 69, Eur.
J. Mineral., 34, https://doi.org/10.5194/ejm-34-463-2022,
2022.
IMA no. 2022-052
Auroselenide
AuSe
Ause
Gaching ore occurrence, Maletoyvayam deposit, Koryak Highland, Kamchatka Peninsula, Far East, Russia(60◦ 190 51.8700 N, 164◦ 460 25.6500 E)
Nadezhda Tolstykh, Anatoly Kasatkin∗ , Fabrizio Nestola,
Anna Vymazalová, Atali Agakhanov, Galina Palyanova, andVladimir Korolyuk∗ E-mail: anatoly.kasatkin@gmail.com
Known synthetic analogue
Monoclinic: C2/m
Eur. J. Mineral., 34, 463–468, 2022

Argentotetrahedrite-(Cd)Ag6 (Cu4 Cd2 )Sb4 S13
Attr-Cd
Au–Ag epithermal deposit Rudno nad Hronom, Žarnovica
District, Banská Bystrica Region, Slovakia (48◦ 230 4700 N,
18◦ 400 5700 E)
Tomáš Mikuš∗ , Juraj Majzlan, Jiří Sejkora, Jozef Vlasáč,Gwladys Steciuk, Jakub Plášil, Christiane Rößler, and Christian Matthes∗ E-mail: mikus@savbb.sk
Tetrahedrite group
Cubic: I 43m; structure determineda = 10.65(2) Å
3.074(100), 2.846(6), 2.663(26), 2.510(6), 1.944(6),1.883(48), 1.728(5), 1.606(30)Type material is deposited in the collections of the Department of Mineralogy and Petrology, National Museum,
Cirkusová 1740, 19300 Prague 9, Czech Republic, catalogue
number P1P 8/2022
How to cite: Mikuš, T., Majzlan, J., Sejkora. J.,
Vlasáč, J., Steciuk, G., Plášil, J., Rößler, C., andMatthes, C.: Argentotetrahedrite-(Cd), IMA 2022053, in: CNMNC Newsletter 69, Eur. J. Mineral., 34,
https://doi.org/10.5194/ejm-34-463-2022, 2022.
IMA no. 2022-054
Pendevilleite-(Y)Mg2 Y3 Al(UO2 )2 (CO3 )7 (OH)6 (H2 O)16
Pnv-Y
Kamoto East Cu–Co deposit, Kolwezi mining district, Lualaba, Democratic Republic of the Congo (10◦ 430 08.800 S,
25◦ 250 04.700 E)
Jakub Plášil∗ , Gwladys Steciuk, Radek Škoda, Simon
Philippo, and Mael Guennou∗ E-mail: plasil@fzu.cz
https://doi.org/10.5194/ejm-34-463-2022

R. Miyawaki et al.: CNMNC Newsletter 69

467– Polymorphs with the same crystal system but different space groups. These are distinguished by the prefix “para-”. If three or more polymorphs show the same
crystal system but different space groups, the spacegroup notation may be added as a suffix, but such anomenclature should be avoided if possible.

New structure type
Triclinic: P 1; structure determineda = 11.9534(6),b = 13.499(2),c = 16.239(1) Å,
α = 107.183(5), β = 92.532(5), γ = 110.127(5)◦15.3(100), 11.44(23), 10.26(33), 8.35(32), 8.04(28),
7.16(21), 6.84(17), 6.35(28)Type material is deposited in the collections of the Musée
National d’Histoire Naturelle, Rue Münster 25, Luxembourg
2160, Luxembourg, catalogue number VP230
How to cite: Plášil, J., Steciuk, G., Škoda, R., Philippo,
S., and Guennou, M.: Pendevilleite-(Y), IMA 2022054, in: CNMNC Newsletter 69, Eur. J. Mineral., 34,
https://doi.org/10.5194/ejm-34-463-2022, 2022.

– Polymorphs with the same space group. These are distinguished by the prefix “para-”.
– Minerals with polymorph suffixes but with different
chemical compositions. These cannot be considered
true polymorphs, so we recommend using the prefix“meta-”, which indicates a close but significantly different chemical composition.

IMA no. 2019-067b
DeltanitrogenNδN
As inclusion within diamonds from the São Luís river alluvial deposits, Juína, Mato Grosso, Brazil (11◦ 290 3500 S,
58◦ 580 1400 W)
Oliver Tschauner∗ , Oded Navon, and Christian Schmidt∗ E-mail: oliver.tschauner@ unlv.edu
Known synthetic analogue
Orthorhombic: Pccn; structure determined
a = 8.442(10), b = 8.136(9), c = 5.974(10) Å
2.661(100), 2.655(40), 2.630 (53), 2.582(47), 2.438(31),2.426(55), 2.406(35), 2.369(42)Type material is deposited in the mineralogical collections of
the Royal Ontario Museum, 100 Queens Park, Toronto, ON
M5S 2C6, Canada, accession number M59805
How to cite: Tschauner, O., Navon, O., and Schmidt, C.:
Deltanitrogen, IMA 2019-067b, in: CNMNC Newsletter
69, Eur. J. Mineral., 34, https://doi.org/10.5194/ejm-34-4632022, 2022.
3

Nomenclature and classification proposals approvedin August 2022

Nomenclature of polymorphs and polysomes
New guidelines for the nomenclature of polymorphs andpolysomes have been approved by the CNMNC:– Polymorphs with different crystal systems. These are
distinguished by the prefixes cubo- (cubic), hexa(hexagonal), tetra- (tetragonal), trigo- (trigonal), ortho(orthorhombic), clino- (monoclinic), and anortho- (triclinic).
– Polymorphs with different crystal systems but showing a pseudosymmetry. These should show the prefix“pseudo-”.
https://doi.org/10.5194/ejm-34-463-2022– Polysomatic symbols have to be placed as a suffix,
which indicates the number and types of modules whichalternate in the structure as in the högbomite supergroup, or as prefixes as in the sartorite homologous series.
These recommendations have to be applied for future
new mineral proposals, but the modifications of historical and well-established names have to pass through the
CNMNC for approval. In order to be consistent with
the new guidelines, 25 mineral names were modified:
domeykite-β becomes trigodomeykite, fergusonite-(Y)-βbecomes clinofergusonite-(Y), fergusonite-(Ce)-β becomes clinofergusonite-(Ce), fergusonite-(Nd)-β becomesclinofergusonite-(Nd), ice-VII becomes cubo-ice, roselite-β
becomes anorthoroselite, sulfur-β becomes clinosulfur, mertieite-II becomes mertieite, mertieite-I becomes
pseudomertieite, uranophane-α becomes uranophane,uranophane-β becomes parauranophane, gersdorffiteP 21 3 becomes gersdorffite, gersdorffite-Pa3 becomesparagersdorffite, gersdorffite-Pca21 becomes orthogersdorffite, betalomonosovite becomes paralomonosovite,lammerite-β becomes paralammerite, nováčekite-I becomes hydronováčekite, nováčekite-II becomes nováčekite,halloysite-7Å becomes halloysite, halloysite-10Å becomeshydrohalloysite, metauranocircite-I becomes metauranocircite, taimyrite-I becomes taimyrite, uranocircite-II
becomes uranocircite, andorite IV becomes quatrandorite,
and andorite VI becomes senandorite.
4

Nomenclature and classification proposals approvedin September 2022

4.1

Voting proposal 22-E: redefinition of braggite andvysotskite

Proposal 22-E is accepted. The ideal formula for braggite isredefined as PdPt3 S4 . The ideal formula for vysotskite is redefined as PdS. The ideal formula of cooperite (PtS) remains
as currently given in the IMA List of Minerals.
Eur. J. Mineral., 34, 463–468, 2022

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4.2

R. Miyawaki et al.: CNMNC Newsletter 69
Uranotungstite: revised formula

Recently, a paper was published (American Mineralogist,
107, 1709–1716, 2022), in which the chemical formula ofuranotungstite was revised based on its crystal structure determination. From these data, collected on the type material, it is shown that the species is not Fe2+ -dominant, asin the original description (Tschermaks Mineralogische undPetrographische Mitteilungen, 34, 25–34, 1985), but Badominant. Consequently, in agreement with the new chemical and structural data obtained on this mineral and with thedominant constituent rule, the formula of uranotungstite ismodified from (Fe2+ ,Ba,Pb)(UO2 )2 (WO4 )(OH)4 q 12H2 O to
Ba(UO2 )2 W2 O8 (OH)2 q H2 O. This is an executive decision
taken by the CNMNC officers.

Eur. J. Mineral., 34, 463–468, 2022

https://doi.org/10.5194/ejm-34-463-2022