1 New mineral proposals approved in June 2024
IMA no. 2024-002
Scandio-fluoro-eckermannite
NaNa2(Mg4Sc)(Si8O22)F2
Sfeck
Bayan Obo deposit, northern margin of the North China Cra-
ton, Inner Mongolia, China (41°47′59′′ N, 109°58′31.8′′ E)
Shuang-Liang Liu, Hong-Rui Fan∗, Xiang-Ping Gu, Hai-
Dong She, Kui-Feng Yang, Xiao-Chun Li, Qi-Wei Wang,
Zhan-Feng Yang, Yong-Gang Zhao, and Feng-Gang Wang
∗ E-mail: fanhr@mail.iggcas.ac.cn
Amphibole supergroup
Monoclinic: C2/m; structure determined
a = 9.8212(3), b = 18.0866(5), c = 5.3091(2) Å,
β = 103.767(4)°
8.523(72), 4.874(25), 4.499(43), 3.407 (56), 3.282(36),
3.126(47), 2.720(100), 2.530(45)
Type material is deposited in the collections of the Geol-
ogy Museum, Institute of Geology and Geophysics, Chinese
Academy of Sciences, No. 19 Beitucheng Western Road,
Chaoyang Distinct, Beijing 100029, People’s Republic of
China, catalogue numbers BY111 (holotype) and M8238
(cotype), and the Geological Museum of China, No. 15 Yan-
grou Hutong, Xicheng Distinct, Beijing 100034, People’s
Republic of China, catalogue number GMCTM2024002 (co-
type)
How to cite: Liu, S.-L., Fan, H.-R., Gu, X.-P., She, H.-D.,
Yang, K. F., Li, X.-C., Wang, Q.-W., Yang, Z.-F., Zhao,
Y.-G., and Wang, F.-G.: Scandio-fluoro-eckermannite, IMA
2024-002, in: CNMNC Newsletter 80, Eur. J. Mineral., 36,
https://doi.org/10.5194/ejm-36-599-2024, 2024.
IMA no. 2024-005
Berndlehmannite
Cu(CrV)S4
Blm
Zhongcun deposit, about 45 km southeast of Shanyang
County, Shaanxi Province, China (33°25′ N, 110°10′ E)
Xuerui Fu, Guowu Li, Lingang Xu∗, Yuan Xue, Ningyue
Sun, Jinhua Hao, Wei Jian, Hao Yan, Huishou Ye, Jianhua
Ding, and Peng Yuan
∗ E-mail: xulingang@cugb.edu.cn
Spinel supergroup
Cubic: Fd3m; structure determined
a = 9.8374(2) Å
3.489(48), 2.973(100), 2.463(45), 2.010(11), 1.894(40),
1.739(68), 1.821(10), 1.004(16)
Type material is deposited in the collections of the Geolog-
ical Museum of China, No. 16 Yangrou Hutong, Xisi, Bei-
jing 100031, People’s Republic of China, catalogue number
GMCTM2024001 (holotype), and the Department of Earth
Sciences and Resources, China University of Geosciences,
Xueyuanlu Street 29, Beijing 100083, People’s Republic of
China, catalogue number CUGB-ZC-001 (cotype)
How to cite: Fu, X., Li, G., Xu, L., Xue, Y., Sun, N.,
Hao, J., Jian, W., Yan, H., Ye, H., Ding, J., and Yuan, P.:
Berndlehmannite, IMA 2024-005, in: CNMNC Newsletter
80, Eur. J. Mineral., 36,
https://doi.org/10.5194/ejm-36-599-2024, 2024.
IMA no. 2024-006
Auropolybasite
[Ag9AuS4][Ag6Sb2S7]
Auplb
Šibeniˇcný vrch deposit, near Nová Baˇna, Žarnovica
Co., Banská Bystrica Region, Slovakia (48°24′49′′ N,
18°38′14′′ E)
Tomáš Mikuš∗, Jozef Vlasáˇc, Juraj Majzlan, Jakub
Plášil, Václav Petˇríˇcek, Martin Števko, Jiˇrí Sejkora, Emil
Makovicky, and Peter Tuˇcek
∗ E-mail: mikus@savbb.sk
Pearceite–polybasite group
Trigonal: P 321; structure determined
a = 15.1091(5), c = 12.1518(5) Å
12.15(50), 3.158(79), 3.038(100), 2.880(69), 2.545(46),
2.467(40), 2.226(52), 1.889(62)
Type material is deposited in the collections of the De-
partment of Mineralogy and Petrology, National Museum,
Cirkusová 1740, 19300 Prague 9, Czech Republic, catalogue
number P1P 61/2021
How to cite: Mikuš, T., Vlasáˇc, J., Majzlan, J., Plášil,
J., Petˇríˇcek, V., Števko, M., Sejkora, J., Makovicky,
E., and Tuˇcek, P.: Auropolybasite, IMA 2024-006,
in: CNMNC Newsletter 80, Eur. J. Mineral., 36,
https://doi.org/10.5194/ejm-36-599-2024, 2024
IMA no. 2024-007
Karlseifertite
Pb(Ga2Ge)(AsO4)2(OH)6
Karl
Tsumeb mine, Tsumeb, Namibia (19°15′ S, 17°42′ E)
Anthony R. Kampf∗, Joy Désor, and Chi Ma
∗ E-mail: akampf@nhm.org
Alunite supergroup
Trigonal: R3m; structure determined
a = 7.2814(7), c = 17.108(1) Å
5.919(50), 3.644(29), 3.073(100), 2.853(19), 2.540(19),
2.280(27), 1.973(27), 1.821(23)
Type material is deposited in the collections of the Natu-
ral History Museum of Los Angeles County, 900 Exposition
Boulevard, Los Angeles, CA 90007, USA, catalogue number
76334 (holotype) and 76335 (cotype)
How to cite: Kampf, A. R., Désor, J., and Ma, C.: Karlseifer-
tite, IMA 2024-007, in: CNMNC Newsletter 80, Eur. J. Min-
eral., 36,
https://doi.org/10.5194/ejm-36-599-2024, 2024.
IMA no. 2024-009
Chinleite-(Ce)
NaCe(SO4)2(H2O)
Chi-Ce
Blue Streak mine, Bull Canyon, Montrose Co., Colorado,
USA (38°11′57′′ N, 108°50′24′′ W)
Anthony R. Kampf∗, Chi Ma, and Joe Marty
∗ E-mail: akampf@nhm.org
The Ce analogue of chinleite-(Y) and chinleite-(Nd)
Trigonal: P 3221
a = 7.0211(11), c = 12.942(3) Å
6.082(57), 5.481(25), 3.511(54), 3.045(100), 2.854(100),
2.164(44), 1.875(60), 1.717(24)
Cotype material is deposited in the collections of the Natu-
ral History Museum of Los Angeles County, 900 Exposition
Boulevard, Los Angeles, CA 90007, USA, catalogue num-
bers 76336, 76337, and 76338
How to cite: Kampf, A. R., Ma, C., and Marty, J.: Chinleite-
(Ce), IMA 2024-009, in: CNMNC Newsletter 80, Eur.
J. Mineral., 36,
https://doi.org/10.5194/ejm-36-599-2024,
2024.
IMA no. 2024-010
Nannoniite
Al2(OH)5F
Nnn
Cetine di Cotorniano Mine, Chiusdino, Siena, Tuscany, Italy
(43°13′ N, 11°09′ E)
Cristian Biagioni∗, Enrico Mugnaioli, Sofia Lorenzon,
Daniela Mauro, Silvia Musetti, Jiˇrí Sejkora, Donato Bel-
monte, Nicola Demitri, and Zdenˇek Dolníˇcek
∗ E-mail: cristian.biagioni@unipi.it
Closely related to gibbsite
Monoclinic: P 21/n; structure determined
a = 8.688(3), b = 5.024(2), c = 9.734(4) Å, β = 90.77(2)°
4.86(vs), 4.35(s), 3.241(m), 2.427(ms), 2.223 (mw),
1.981(m), 1.742(mw), 1.447(m)
Type material is deposited in the collections of the Museo
di Storia Naturale, Università di Pisa, Via Roma 79, Calci
(PI), Italy, catalogue numbers 20071 (holotype) and 20072
(cotype)
How to cite: Biagioni, C., Mugnaioli, E., Lorenzon,
S., Mauro, D., Musetti, S., Sejkora, J., Belmonte, D.,
Demitri, N., and Dolníˇcek, Z.: Nannoniite, IMA 2024-
010, in: CNMNC Newsletter 80, Eur. J. Mineral., 36,
https://doi.org/10.5194/ejm-36-599-2024, 2024.
IMA no. 2024-012
Ohtaniite
Mg3(Si0.50.5)Si2O8
Oht
Suizhou meteorite, Xihe, Zengdu District, Suizhou, Hubei,
China (31°37′ N, 113°28′ E)
Luca Bindi∗, Zhidong Xie, Thomas G. Sharp, and Xiande
Xie
∗ E-mail: luca.bindi@unifi.it
Isostructural with wadsleyite
Orthorhombic: Imma; structure determined
a = 5.5820(10), b = 11.418(3), c = 7.708(2) Å
3.06(40), 2.560(60), 2.510(55), 2.415(90), 2.162(40),
2.000(80), 1.925(25), 1.388(100)
Type material is deposited in the collections of the Museo di
Storia Naturale, Università di Firenze, Via La Pira 4, 50121
Florence, Italy, catalogue number 3238/I
How to cite: Bindi, L., Xie, Z., Sharp, T. G., and Xie,
X.: Nannoniite, IMA 2024-010, in: CNMNC Newsletter
80, Eur. J. Mineral., 36,
https://doi.org/10.5194/ejm-36-599-2024, 2024
2 New mineral proposals approved in July 2024
IMA no. 2021-085
Calciopharmacoalumite
Ca0.5Al4(AsO4)3(OH)4 q5H2O
Cpal
Obdilya mine, near the village of Chauvai, Batkenskaya re-
gion, Kyrgyzstan (40°08′27.6432′′ N, 72°05′15.7344′′ E)
Vladimir Y. Karpenko, Leonid A. Pautov, Elena S. Zhitova,
Oleg I. Siidra∗, Atali A. Agakhanov, Nikita A. Zolotov, and
Vladimir N. Bocharov
∗ E-mail: siidra@mail.ru
Pharmacoalumite group
Cubic: P 43m; structure determined
a = 7.758(5) Å
7.76(100), 4.472(60), 3.880(33), 3.166(30), 2.746(51),
2.457(16), 2.339(19), 2.226(13)
Type material is deposited in the collections of the Fers-
man Mineralogical Museum, Russian Academy of Sciences,
Leninskiy Prospekt 18-2, Moscow 119071, Russia, registra-
tion number 5744/1
How to cite: Karpenko, V. Y., Pautov, L. A., Zhitova,
E. S., Siidra, O. I., Agakhanov, A. A., Zolotov, N. A.,
and Bocharov, V. N.: Calciopharmacoalumite, IMA 2021-
085, in: CNMNC Newsletter 80, Eur. J. Mineral., 36,
https://doi.org/10.5194/ejm-36-599-2024, 2024.
IMA no. 2023-003a
Touretite
LiAl4Be4(B11Be)O28
Tte
Ambalabe Pegmatite, Manapa, Betafo, Vakinankaratra re-
gion, Madagascar (20°14′25′′ S, 47°01′18′′ E)
Frédéric Hatert∗, Federico Pezzotta, Pietro Vignola, Markus
Wälle, Pierre Lefèvre, Radek Škoda, Anatoly V. Kasatkin,
Atali A. Agakhanov, Natalia V. Zubkova, Mattia Bonazzi,
Alberto Zanetti, Nicola Rotiroti, Andrea Risplendente, Mar-
tin Depret, and Florent Bomal
∗ E-mail: fhatert@uliege.be
Isostructural with rhodizite and londonite
Cubic: P 43m; structure determined
a = 7.3120(1) Å
7.267(64), 3.261(37), 2.976(100), 2.576(17), 2.431(13),
2.306(17), 2.104(30), 1.826(13)
Type material is deposited in the collections of the Labo-
ratoire de Minéralogie, University of Liege, Bâtiment B18,
Sart Tilman, 4000 Liège, Belgium, catalogue number ULG-
21979, and the Museo Civico di Storia Naturale, Corso
Venezia 55, 20121 Milan, Italy, catalogue number M39042
How to cite: Hatert, F., Pezzotta, F., Vignola, P., Wälle,
M., Lefèvre, P., Škoda, R., Kasatkin, A. V., Agakhanov, A.
A., Zubkova, N. V., Bonazzi, M., Zanetti, A., Rotiroti, N.,
Risplendente, A., Depret, M., and Bomal, F.: Touretite, IMA
2023-003a, in: CNMNC Newsletter 80, Eur. J. Mineral., 36,
https://doi.org/10.5194/ejm-36-599-2024, 2024.
IMA no. 2023-045a
Vegrandisite
BaCl2
Veg
In a quartz vein, Biely Vrch deposit, Javorie stratovolcano,
3.5 km southeast of the town Detva, Slovakia (48°33′31′′ N,
19°22′28′′ E)
Peter Kodˇera∗, Juraj Majzlan, Kilian Pollok, and František
Šimko
∗ E-mail: kodera1@uniba.sk
Known synthetic analogue
Orthorhombic: Pnma
a = 7.80(3), b = 4.71(2), c = 9.60(9) Å
4.041(55), 3.933(60), 2.880(66), 2.616(67), 2.366(100),
2.355(86), 2.021(55), 1.966(60)
Type material is deposited in the collections of the Min-
eralogical Museum, Comenius University, Ilkoviˇcova 6,
Bratislava 842 15, Slovakia, catalogue number 7400
How to cite: Kodˇera, P., Majzlan, J., Pollok, K., and Šimko,
F.: Vegrandisite, IMA 2023-045a, in: CNMNC Newsletter
80, Eur. J. Mineral., 36,
https://doi.org/10.5194/ejm-36-599-2024, 2024.
IMA no. 2024-011
Juxingite
Bi6Cu140Fe30S125
Jux
Jiama deposit, Tibet, China (29°43′53′′ N, 91°43′06′′ E)
Feng-Hua Gu, Yong-Mei Zhang∗, Xiang-Ping Gu, Guang
Fan, Si-Hong Jiang, Yu Zhao, Zhong-Liang Cui, and Zheng-
Kun Yang
∗ E-mail: zhangyongmei@cugb.edu.cn
Chemically and structurally related to bornite
Cubic: F 43m; structure determined
a = 27.3529(5) Å
3.819(6), 3.325(27), 3.230(9), 3.155(28), 2.738(15),
1.932(100), 1.649(8), 1.368(7)
Type material is deposited in the collections of the Geologi-
cal Museum of China, No. 16 Yangrou Hutong, Xisi, Beijing
100031, People’s Republic of China, catalogue number GM-
CTM2023013
How to cite: Gu, F.-H., Zhang, Y.M., Gu, X.-P., Fan, G.,
Jiang, S.-H., Zhao, Y., Cui, Z.-L., and Yang, Z.-K.: Juxingite,
IMA 2024-011, in: CNMNC Newsletter 80, Eur. J. Mineral.,
36,
https://doi.org/10.5194/ejm-36-599-2024, 2024.
IMA no. 2024-013
Parisite-(Nd)
CaNd2(CO3)3F2
Pst-Nd
Bayan Obo deposit, 130 km north of the city of Baotou, Inner
Mongolia, China (41°47′57′′ N, 109°57′40′′ E)
Chenzi Fan∗, Hong Yu, Xiangping Gu, Pusheng Zeng, and
Zhenyu Chen
∗ E-mail: czfan2013@163.com
The Nd-dominant analogue of parisite-(Ce) and parisite-(La)
Monoclinic: Cc
a = 12.328(1), b = 7.1185(4), c = 28.463(4) Å,
β = 98.53(1)°
14.336(75), 6.926(28), 4.720(61), 3.558(80), 2.835(100),
2.056(43), 1.959(39), 1.880(29)
Type material is deposited in the collections of the Na-
tional Research Center of Geoanalysis, Baiwanzhuang Street
26, Beijing, People’s Republic of China (holotype), cata-
logue number NRCGA2024001, and the Geological Mu-
seum of China, Yangrouhutong Street 15, Xicheng District,
Beijing, People’s Republic of China, catalogue number GM-
CTM2024003 (cotype)
How to cite: Fan, C., Yu, H., Gu, X., Zeng, P., and Chen,
Z.: Parisite-(Nd), IMA 2024-013, in: CNMNC Newsletter
80, Eur. J. Mineral., 36,
https://doi.org/10.5194/ejm-36-599-2024, 2024.
IMA no. 2024-015
Dacostaite
K(Mg2Al)[Mg(H2O)6]2(AsO4)2F6 q2H2O
Dcs
Cetine di Cotorniano mine, Chiusdino, Siena, Tuscany, Italy
(43°13′ N, 11°09′ E)
Cristian Biagioni∗, Daniela Mauro, Jiˇrí Sejkora, Zdenˇek Dol-
níˇcek, Andrea Dini, and Radek Škoda
∗ E-mail: cristian.biagioni@unipi.it
New structure type
Monoclinic: C2/m; structure determined
a = 12.474(5), b = 7.198(3), c = 13.724(6) Å,
β = 99.52(1)°
13.7(s), 6.2(w), 5.98(mw), 5.48(m), 4.494(w), 3.581(mw),
2.977(m), 1.797(mw)
Type material is deposited in the collections of the Museo di
Storia Naturale, Università di Pisa, Via Roma 79, Calci (PI),
Italy, catalogue number 20073
How to cite: Biagioni, C., Mauro, D., Sejkora, J., Dol-
níˇcek, Z., Dini, A., and Škoda, R.: Dacostaite, IMA 2024-
015, in: CNMNC Newsletter 80, Eur. J. Mineral., 36,
https://doi.org/10.5194/ejm-36-599-2024, 2024.
IMA no. 2024-016
SteiningeriteBa2Zr2(Si4O12)O2
Sngr
Löhley basalt quarry, Üdersdorf, near Daun, Eifel,
Rhineland-Palatinate, Germany (50°09′33′′ N, 6°48′41′′ E)
Rafał Juroszek∗, Biljana Krüger, Uwe Kolitsch, Günter
Frenz, and Günter Blaß
∗ E-mail: rafal.juroszek@us.edu.pl
Structurally related with minerals of the of nenadkevichite
group
Tetragonal: P 4/mbm; structure determined
a = 8.894(2), c = 8.051(2) Å
8.051(51), 3.893(37), 3.566(100), 3.144(32), 2.984(71),
2.829(77), 2.812(66), 2.013(25)
Type material is deposited in the collections of the Nat-
ural History Museum Mainz, State Collection for Natural
History Rhineland-Palatinate, Reichklarastraße 10, 55116
Mainz, Germany, catalogue number NHMMZ M 2024/1-LS
How to cite: Juroszek, R., Krüger, B., Kolitsch, U.,
Frenz, G., and Blaß, G.: Steiningerite, IMA 2024-
016, in: CNMNC Newsletter 80, Eur. J. Mineral., 36,
https://doi.org/10.5194/ejm-36-599-2024, 2024.
IMA no. 2024-017
Hoperanchite
(NH4)2(S2O3)
Hpr
In a burning bituminous shale along the Pacific coast at Hope
Ranch, west of Santa Barbara, Santa Barbara Co., California,
USA (34°24′35.2′′ N, 119°45′59.1′′ W)
Anthony R. Kampf∗, Paul M. Adams, Chi Ma, and David K.
Lynch
∗ E-mail: akampf@nhm.org
New structure type
Monoclinic: C2; structure determined
a = 10.2313(5), b = 6.4998(3), c = 8.8098(6) Å,
β = 94.611(7)°
5.112(45), 4.730(100), 4.547(89), 4.345(39), 3.225(34),
3.021(89), 2.627(86), 2.380(25)
Cotype material is deposited in the collections of the Natu-
ral History Museum of Los Angeles County, 900 Exposition
Boulevard, Los Angeles, CA 90007, USA, catalogue number
numbers 76339, 76340, and 76341
How to cite: Kampf, A. R., Adams, P. M., Ma, C., and Lynch,
D. K.: Hoperanchite, IMA 2024-017, in: CNMNC Newslet-
ter 80, Eur. J. Mineral., 36,
https://doi.org/10.5194/ejm-36-599-2024, 2024.
IMA no. 2024-018
Rasmussenite
Ca(C2H3O3)2 q3H2O
Rsu
Pusch Ridge, Santa Catalina Mountains, north of Tuc-
son, Pima Co., Arizona, USA (32°21′42′′ N, 110°57′30′′ W;
975 m a.s.l.)
Hexiong Yang∗, Xiangping Gu, Anthony R. Kampf, Warren
Lazar, Ronald B. Gibbs, and Robert T. Downs
∗ E-mail: hyang@arizona.edu
Glycolate subgroup
Triclinic: P 1; structure determined
a = 9.666(1), b = 9.722(2), c = 5.7628(3) Å, α = 89.96(1),
β = 76.761(9), γ = 97.24(1)°
9.558(100), 9.230(41), 7.228(27), 6.332(28), 4.896(13),
3.606(20), 3.183(21), 3.108(14)
Type material is deposited in the collections of the University
of Arizona Alfie Norville Gem & Mineral Museum, 115 N
Church Ave Suite 121, Tucson, AZ 85701, USA, catalogue
no. 22736 (holotype), and the RRUFF Project, deposition no.
R240004 (cotype)
How to cite: Yang, H., Gu, X, Kampf, A. R., Lazar,
W., Gibbs, R. B., and Downs, R. T.: Rasmussenite, IMA
2024-018, in: CNMNC Newsletter 80, Eur. J. Mineral., 36,
https://doi.org/10.5194/ejm-36-599-2024, 2024.
IMA no. 2024-019
Chromviskontite
Pb5Cu2(CrO4)3(SeO3)(OH)6
Cvkt
Western paleo-fumarole field, Mountain 1004, Tolbachik
volcano, Kamchatka Peninsula, Far Eastern Federal District,
Russia (55°40′ N, 160°14′ E; 950 m a.s.l.)
Igor V. Pekov∗, Sergey N. Britvin, Atali A. Agakhanov,
Vasiliy O. Yapaskurt, Mikhail V. Strel’nikov, Anna G.
Turchkova, and Anastasia N. Kupchinenko
∗ E-mail: igorpekov@mail.ru
The Cr6+-dominant analogue of viskontite
Orthorhombic: Pmn21; structure determined
a = 20.597(1), b = 7.3463(3), c = 6.5187(3) Å
6.22(59), 4.733(100), 3.262(57), 3.187(75), 3.143(43),
3.118(58), 2.861(35), 2.813(38)
Type material is deposited in the collections of the Fers-
man Mineralogical Museum, Russian Academy of Sciences,
Leninskiy Prospekt 18-2, Moscow 119071, Russia, registra-
tion number 6122/1
How to cite: Pekov, I. V., Britvin, S. N., Agakhanov, A.
A., Yapaskurt, V. O., Strel’nikov, M. V., Turchkova, A.
G., and Kupchinenko, A. N.: Chromviskontite, IMA 2024-
019, in: CNMNC Newsletter 80, Eur. J. Mineral., 36,
https://doi.org/10.5194/ejm-36-599-2024, 2024.
3 Nomenclature/classification proposals approved
in July 2024
3.1 IMA 24-A: definition of the neotype material for
elbaite
(Ferdinando Bosi, Federico Pezzotta, Henrik Skobgy,
Alessandra Altieri, Paolo Ballirano, Riccardo Luppi, Ulf
Hålenius, Gioacchino Tempesta, Giovanna Agrosì, and Jiˇrí
Sejkora)
Proposal 24-A is accepted, and a neotype sample is defined
for the mineral elbaite, first described in 1913. The type lo-
cality is the Rosina pegmatite, located about 100 m south of
the village of San Piero in Campo, Elba island, Italy. Neo-
type material is deposited in the collections of the Museo
Universitario di Scienze della Terra (MUST), Dipartimento
di Scienze della Terra, Sapienza Università di Roma, Italy,
catalogue number 33383/406.
3.2 Nolanite supergroup
(Nikita V. Chukanov, Vasilisa M. Gridchina, Ramiza K.
Rastsvetaeva, Natalia V. Zubkova, and Igor V. Pekov)
The nolanite supergroup is established. In the frame of
this, the mineral rinmanite-(Zn) is renamed zincorinmanite-
(Zn). The supergroup is divided into the kamiokite group
(including the species iseite, kamiokite, and majindeite), the
nolanite group (including the species akdalaite, ferrihydrite,
and nolanite), and the rinmanite group (including the species
rinmanite and zincorinmanite-(Zn)), in accordance with the
largest charge of the species-defining cations.
3.3 Kröhnkite supergroup
(Frank C. Hawthorne)
The kröhnkite supergroup is established. It is divided
into the brandtite group (including the species brandtite,
dobšináite, kröhnkite, roselite, rruffite, wendwilsonite, and
zincroselite), the collinsite group (including the species
anorthoroselite, cassidyite, collinsite, gaitite, hillite, nick-
eltalmessite, parabrandtite, and talmessite), and the fairfield-
ite group (including the species fairfieldite and messelite).
Dondoellite is an unassigned member of the supergroup un-
til an isotypic mineral has been approved, whereupon a new
group can be proposed.
4 Other issues
4.1 Loparite-(Ce) or loparite?
In the IMA List of Minerals the mineral loparite-(Ce) is
still mentioned as such, with the Levinson modifier indicat-
ing the dominating REE. However, after the approval of the
report on the perovskite supergroup (Mineralogical Maga-
zine, 81, 411–461 (2017)), the mineral was renamed loparite,
since it was shown that REEs are not a dominant constituent
at any site. The end-member formula could be written as
(Na0.5REE0.5)TiO3, in which REEs are subordinate cations
at the A site and appear in the formula for charge balance
requirements only. Thanks are owed to Daniel Atencio for
noticing this inconsistency.
4.2 Correct chemical formula for launayite
In the IMA List of Minerals the chemical formula of lau-
nayite is given as CuPb10(Sb,As)13S20. This is a typo for
CuPb10(Sb,As)13S30. The latter formula is the correct one for
evident stoichiometric reasons and is also given in the IMA-
approved report on sulfosalts (European Journal of Mineral-
ogy, 20, 7–46 (2008)). Thanks go to Frank de Wit for spotting
this.
Thema: Neue Mineralien CNMNC Newsletter 80(Juni 2024, Juli 2024) (Gelesen 1514 mal)
Mineralienatlas - Fossilienatlas - Info-Center
