IMA no. 2025-031b

• Piilonenite-(Nd)

• NaNd(CO₃)₂(H₂O)₃

• Pii-Nd

• Poudrette (Demix) quarry, Mont Saint-Hilaire, Quebec, Canada (45°33^′46^′′ N, 73°08^′30^′′ W)

• Inna Lykova^*, Ralph Rowe, Simon Teat, Glenn Poirier, and Stephanie Barnes

• ^* E-mail: ilykova@nature.ca

• New structure type

• Orthorhombic: P2₁2₁2₁; structure determined

• a=6.791(1), b=17.135(3) Å, c=6.436(1)

• 8.59(100), 4.690(14), 4.529(7), 4.291(30), 4.123(7), 3.417(10), 3.175(17), 2.859(8)

• Type material is deposited in the collections of the Canadian Museum of Nature, 240 McLeod Street, Ottawa, ON K2P 2R1, Canada, catalogue number CMNMC 93393

• How to cite: Lykova, I., Rowe, R., Teat, S., Poirier, G., and Barnes, S.: Piilonenite-(Nd), IMA 2025-031b, in: CNMNC Newsletter 91, Eur. J. Mineral., 38, https://doi.org/10.5194/ejm-38-347-2026, 2026.

IMA no. 2025-101

• Kristekite

• Cu₂(H₂O)₄(UO₂)(SeO₃)₃ ⋅ 4H₂O

• Kik

• In the mine dump of the shaft no. 11A, near Bytíz, Příbram ore district, Central Bohemia, Czech Republic (49°41^′18.89^′′ N, 14°04^′13.15^′′ E)

• Jakub Plášil^*, Pavel Škácha, Jiří Sejkora, Radek Škoda, and Radana Vrtišková

• ^* E-mail: plasil@fzu.cz

• Chemically related to marthozite

• Monoclinic: P2₁/m; structure determined

• a=6.3664(2), b=15.8932(4), c=8.1248(3) Å, β=91.437(2)°

• 8.197(53), 7.293(100), 5.718(7), 4.100(40), 3.647(7), 3.247(7), 3.129(5), 2.974(9)

• Type material is deposited in the collections of the Department of Mineralogy and Petrology, National Museum, Cirkusová 1740, 19300 Praha 9, Czech Republic, catalogue number P1P 46/2025

• How to cite: Plášil, J., Škácha, P., Sejkora, J., Škoda, R., and Vrtišková, R.: Kristekite, IMA 2025-101, in: CNMNC Newsletter 91, Eur. J. Mineral., 38, https://doi.org/10.5194/ejm-38-347-2026, 2026.

IMA no. 2025-102

• Magnesiochangesite-(Ce)

• (Ca₈Ce)□Mg(PO₄)₇

• Mcgs-Ce

• Lunar meteorite Pakepake005, discovered in the Taklamakan desert, Xinjiang, China (38°50^′22^′′ N, 83°42^′18^′′ E)

• Yanjuan Wang^*, Zengqian Hou, Xiaochao Che, Arianna E. Lanza, Fernando Cámara, Zhenyu Chen, Cheng Yue, Ze Liu, Qingqing Yin, Tao Long, Maxwell C. Day, Francesca Innocenzi, Lisa Santello, Anna Barbaro, Simone Molinari, Ziyao Wang, Junping Ren, Ran Zhang, Kai Qu, and Fabrizio Nestola^*

• ^* E-mail: wangyanjuan_cugb@foxmail.com,
  fabrizio.nestola@unipd.it

• Cerite supergroup

• Trigonal: R3c; structure determined

• a=10.3813(4), c=37.278(1) Å

• 3.430(16), 3.190(16), 2.865(100), 2.591(39), 2.089(29), 1.878(12), 1.810(13), 1.715(20)

• 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 GMCTM2025021

• How to cite: Wang, Y., Hou, Z., Che, X., Lanza, A. E., Cámara, F., Chen, Z., Yue, C., Liu, Z., Yin, Q., Long, T., Day, M. C., Innocenzi, F., Santello, L., Barbaro, A., Molinari, S., Wang, Z., Ren, J., Zhang, R., Qu, K., and Nestola, F.: Magnesiochangesite-(Ce), IMA 2025-102, in: CNMNC Newsletter 91, Eur. J. Mineral., 38, https://doi.org/10.5194/ejm-38-347-2026, 2026.

IMA no. 2025-072

• Bernwoodite

• Ca₅TiAl₂Si₂O₁₄

• Bew

• As inclusion in a diamond from the Rio Sorriso placer, Juina area, Mato Grosso, Brazil (11°19^′59^′′ S, 59°10^′59^′′ W)

• Nester Korolev^*, Ekaterina S. Kiseeva, Alena Aslandukova, George E. Harlow, Chi Ma, Yaakov Weiss, Alexander Kurnosov, Felix V. Kaminsky, and Leonid Dubrovinsky

• ^* E-mail: nkorolev@amnh.org

• Perovskite supergroup

• Monoclinic: C2/c; structure determined

• a=9.190(1), b=5.2594(4), c=21.846(4) Å, β=97.84(2)°

• 2.647(100), 2.643(67), 2.189(17), 2.152(46), 1.522(56), 1.521(30), 1.183(18), 1.178(24)

• Type material is deposited in the collections of the American Museum of Natural History, 200 Central Park West, New York, NY 10024-5102, USA, catalogue no. AMNH#115649

• How to cite: Korolev, N., Kiseeva, E. S., Aslandukova, A., Harlow, G. E., Ma, C., Weiss, Y., Kurnosov, A., Kaminsky, F. V., and Dubrovinsky, L.: Bernwoodite, IMA 2025-072, in: CNMNC Newsletter 91, Eur. J. Mineral., 38, https://doi.org/10.5194/ejm-38-347-2026, 2026.

IMA no. 2025-093

• Georgeliuite

• Ca₂Mn${}_{\mathrm{3}}^{\mathrm{3}+}$O₂(AsO₄)₃(H₂O)₂ ⋅ H₂O

• Geg

• Jote mine, Pampa Larga district, Tierra Amarilla, Copiapó Province, Atacama Region, Chile (27°36^′30^′′ S, 70°09^′23^′′ W)

• Xiangping Gu, Hexiong Yang^*, Linfei Qiu, Guang Fan, Robert A. Jenkins, Ronald B. Gibbs, and Robert T. Downs

• ^* E-mail: hyang@arizona.edu

• The Mn³⁺ analogue of arseniosiderite

• Monoclinic: Cm; structure determined

• a=11.3112(9), b=20.163(1), c=8.9858(7) Å, β=100.539(7)°

• 8.803(10), 5.734(19), 3.345(23), 3.241(26), 2.930(21), 2.803(61), 2.656(22), 2.520(20)

• Type material is deposited in the collections of the University of Arizona Alfie Norville Gem & Mineral Museum, 115 N Church Ave Ste 121, Tucson, AZ 85701, USA, catalogue number 22747 (holotype), and the RRUFF Project, deposition number R250055 (cotype)

• How to cite: Gu, X., Yang, H., Qiu, L., Fan, G., Jenkins, R. A., Gibbs, R. B., and Downs, R. T.: Georgeliuite, IMA 2025-093, in: CNMNC Newsletter 91, Eur. J. Mineral., 38, https://doi.org/10.5194/ejm-38-347-2026, 2026.

IMA no. 2025-095a

• Sombrereteite

• NaCa₃(Al₇Si₉)O₃₂

• Som

• Sombrerete iron meteorite, found in 1958 at Cerro del Sombreretillo, Zacatecas, Mexico (23°38^′ N, 103°40^′ W)

• Xiangping Gu, Zuokai Ke, Hexiong Yang^*, Kai Qu, Guanghua Liu, Yixuan Liu, Yizhou Chen, Ran Gao, Qun Ai, Shuting Huang, Baihui Ma, and Yang Liu

• ^* E-mail: hyang@arizona.edu

• Chemically, the sodium analogue of wodegongjieite

• Monoclinic: C2/c; structure determined

• a=10.2358(1), b=17.8056(3), c=14.9349(3) Å, β=90.420(1)°

• 4.429(73), 3.816(99), 3.743(100), 3.351(36), 3.272(48), 2.854(68), 2.561(71), 1.866(21)

• 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 GMCTM2025019

• How to cite: Gu, X., Ke, Z., Yang, H., Qu, K., Liu, G., Liu, Y., Chen, Y., Gao, R., Ai, Q., Huang, S., Ma, B., and Liu, Y.: Sombrereteite, IMA 2025-095a, in: CNMNC Newsletter 91, Eur. J. Mineral., 38, https://doi.org/10.5194/ejm-38-347-2026, 2026.

IMA no. 2026-002

• Leishmanite

• Ba(H₂O)₄[(UO₂)₃O₂(OH)₃]₂ ⋅ 3H₂O

• Lhm

• On the northern slope of the Grand Alou valley, south of the Dent de Nendaz (2463 m), Nendaz, Valais, Switzerland (46°08^′40^′′ N, 7°17^′37^′′ E)

• Jakub Plášil^*, Radek Škoda, Stefan Ansermet, and Nicolas Meisser

• ^* E-mail: plasil@fzu.cz

• Closely related to billietite

• Orthorhombic: Pmn2₁; structure determined

• a=12.079(2), b=15.096(3), c=7.155(2) Å

• 7.46(100), 6.09(10), 3.789(30), 3.601(20), 3.519(40), 3.249(45), 3.186(60), 2.044(15)

• Type material is deposited in the collections of the Department of Geology, State Museum of Natural Sciences (Naturéum), Anthropole, Dorigny, 1015 Lausanne, Switzerland, catalogue number MGL101918

• How to cite: Plášil, J., Škoda, R., Ansermet, S., and Meisser, N.: Leishmanite, IMA 2026-002, in: CNMNC Newsletter 91, Eur. J. Mineral., 38, https://doi.org/10.5194/ejm-38-347-2026, 2026.

IMA 25-B – stilpnomelane group: composition range, franklinphilite and ekmanite discredited

(Richard A. Eggleton, Penelope L. King, Frank Brink, Peter Self, and Aaron Dodd)

Proposal 25-B on the nomenclature of the stilpnomelane group is accepted. The general formula of minerals belonging to this group is A₄M₄₈[Si₆₄Al₈](O,(OH))₂₁₆ ⋅ nH₂O, where A= K, Na, Ca, and Ba, and M= Fe²⁺, Mn, Mg, Al, Fe³⁺, and Zn. The end-member formula of stilpnomelane is K₄Fe${}_{\mathrm{48}}^{\mathrm{2}+}$[Si₆₄Al₈]O₁₆₄(OH)₅₂ ⋅ nH₂O, and lennilenapeite is redefined as an Mn analogue with the end-member formula K₄Mn${}_{\mathrm{48}}^{\mathrm{2}+}$[Si₆₄Al₈]O₁₆₄(OH)₅₂ ⋅ nH₂O. Ekmanite is a stilpnomelane with minor Mn, and franklinphilite is a mixture of lennilenapeite and nelenite; both minerals are consequently discredited.

IMA 26-A – definition of a gadolinite-(Y) neotype

(Dan Holtstam, Alice Taddei, Hans-Jürgen Förster, and Oona Appelt)

Proposal 26-A is accepted, and the neotype material for gadolinite-(Y) is redefined from the Ytterby locality, Sweden. The sample is stored in the collections of the Swedish Museum of Natural History, P.O. Box 50007, 10405 Stockholm, Sweden, catalogue no. GEO-NRM LK6893.

Polish-up of the IMA List of Minerals (second round)

After a similar action made some years ago (see CNMNC Newsletter 50), the IMA-CNMNC is making effective a number of minor changes in the ideal chemical formulae of mineral species. In most cases the change merely consists of the elimination of subordinate constituents occurring within the same parentheses together with the dominant constituent. Minerals marked as Q (questionable) in the IMA List of Minerals were not considered since these deserve a more detailed re-appraisal. Similarly, minerals belonging to a supergroup for which the IMA-CNMNC approved a comprehensive report were left behind too as those formulae have already been discussed and agreed upon by a dedicated subcommittee. This is an executive decision taken by the IMA-CNMNC.

Aldridgeite
Current formula: Cd(Cu,Zn)₄(SO₄)₂(OH)₆(H₂O)₃
New formula: CdCu₄(SO₄)₂(OH)₆(H₂O)₃
[Cf. devilline: CaCu₄(SO₄)₂(OH)₆(H₂O)₃]

Aluminocopiapite
Current formula: (Al,Mg)Fe${}_{\mathrm{4}}^{\mathrm{3}+}$(SO₄)₆(OH,O)₂(H₂O)₁₄ ⋅ 6H₂O
New formula: AlFe${}_{\mathrm{4}}^{\mathrm{3}+}$(SO₄)₆O(OH)(H₂O)₁₄ ⋅ 6H₂O
[Cf. magnesiocopiapite: MgFe${}_{\mathrm{4}}^{\mathrm{3}+}$(SO₄)₆(OH)₂(H₂O)₁₄ ⋅ 6H₂O]

Alumovesuvianite
Current formula: Ca₁₉Al(Al₁₀Mg₂)Si₁₈O₆₉(OH)₉
New formula: Ca₁₉Al(Al₁₀Mg₂)(SiO₄)₁₀(Si₂O₇)₄O(OH)₉
[Cf. manganvesuvianite:
Ca₁₉Mn³⁺(Al₁₀Mg₂)(SiO₄)₁₀(Si₂O₇)₄O(OH)₉]

Ankerite
Current formula: Ca(Fe²⁺,Mg)(CO₃)₂
New formula: CaFe²⁺(CO₃)₂
[Cf. dolomite: CaMg(CO₃)₂]

Arsenbrackebuschite
Current formula: Pb₂(Fe³⁺,Zn)(AsO₄)₂(OH,H₂O)
New formula: Pb₂Fe³⁺(AsO₄)₂(OH)
[Cf. feinglosite: Pb₂Zn(AsO₄)₂ ⋅ H₂O]

Azoproite
Current formula: Mg₂[(Ti,Mg),Fe³⁺]O₂(BO₃)
New formula: Mg₂(Ti_0.5Mg_0.5)O₂(BO₃)
[Cf. ludwigite: Mg₂Fe³⁺O₂(BO₃)]

Bannisterite
Current formula: (Ca,K,Na)(Mn²⁺,Fe²⁺)₁₀(Si,Al)₁₆O₃₈(OH)₈
⋅ nH₂O
New formula: CaMn${}_{\mathrm{10}}^{\mathrm{2}+}$[(Si₁₄Al₂)O₃₈(OH)₈] ⋅ nH₂O
[Cf. kayupovaite: Na₂Mn${}_{\mathrm{10}}^{\mathrm{2}+}$[(Si₁₄Al₂)O₃₈(OH)₈] ⋅ 7H₂O]

Barićite
Current formula: (Mg,Fe)₃(PO₄)₂(H₂O)₈
New formula: Mg₃(PO₄)₂(H₂O)₈
[Cf. vivianite: Fe${}_{\mathrm{3}}^{\mathrm{2}+}$(PO₄)₂(H₂O)₈]

Barquillite
Current formula: Cu₂(Cd,Fe)GeS₄
New formula: Cu₂CdGeS₄
[Cf. briartite: Cu₂FeGeS₄]

Borisenkoite
Current formula: Cu₃[(V,As)O₄]₂
New formula: Cu₃(VO₄)₂
[Cf. kayupovaite: Cu₃(AsO₄)₂]

Bouazzerite
Current formula: Bi₆(Mg,Co)₁₁Fe₁₄(AsO₄)₁₈O₁₂(OH)₄(H₂O)₈₆
New formula: Bi₆Mg₁₁Fe₁₄(AsO₄)₁₈O₁₂(OH)₄(H₂O)₈₆

Byrudite
Current formula: (Be,?)(V³⁺,Ti)₃O₆
New formula: BeV${}_{\mathrm{2}}^{\mathrm{3}+}$TiO₆
[Cf. verbierite: BeCr${}_{\mathrm{2}}^{\mathrm{3}+}$TiO₆]

Carbocernaite
Current formula: (Sr,Ce,La)(Ca,Na)(CO₃)₂
New formula: SrCa(CO₃)₂

Chlorophoenicite
Current formula: (Mn,Mg,Zn)₃Zn₂(AsO₄)(OH,O)₆
New formula: Mn₃Zn₂(OH)₆As[O₃(OH)₃]
[Cf. peterchinite: Zn₃Zn₂(OH)₆As[O₃(OH)₃]]

Cyprine
Current formula: Ca₁₉Cu²⁺(Al,Mg)₁₂Si₁₈O₆₉(OH)₉
New formula: Ca₁₉Cu²⁺(Al₁₁Mg)(SiO₄)₁₀(Si₂O₇)₄O(OH)₉
[Cf. magnesiovesuvianite:
Ca₁₉Mg(Al₁₁Mg)(SiO₄)₁₀(Si₂O₇)₄O(OH)₉]

Eckhardite
Current formula: (Ca,Pb)Cu²⁺Te⁶⁺O₅(H₂O)
New formula: CaCu²⁺Te⁶⁺O₅(H₂O)

Fluorvesuvianite
Current formula: Ca₁₉(Al,Mg)₁₃(SiO₄)₁₀(Si₂O₇)₄O(F,OH)₉
New formula: Ca₁₉Al(Al₁₀Mg₂)(SiO₄)₁₀(Si₂O₇)₄OF₉
[Cf. alumovesuvianite:
Ca₁₉Al(Al₁₀Mg₂)(SiO₄)₁₀(Si₂O₇)₄O(OH)₉]

Fontarnauite
Current formula: (Na,K)₂(Sr,Ca)(SO₄)[B₅O₈(OH)](H₂O)₂
New formula: Na₂Sr(SO₄)[B₅O₈(OH)](H₂O)₂

Fritzscheite
Current formula: Mn²⁺(UO₂)₂(VO₄,PO₄)₂ ⋅ 4H₂O
New formula: Mn²⁺(UO₂)₂(VO₄)₂ ⋅ 4H₂O
[Cf. lehnerite: Mn²⁺(UO₂)₂(PO₄)₂ ⋅ 8H₂O]

Gainesite
Current formula: Na₂(Be,Li)Zr₂(PO₄)₄ ⋅ 1.5H₂O
New formula: Na₂BeZr₂(PO₄)₄ ⋅ 1.5H₂O

Hloušekite
Current formula: (Ni,Co)Cu₄(AsO₄)₂(AsO₃OH)₂(H₂O)₇ ⋅ H₂O
New formula: NiCu₄(AsO₄)₂(AsO₃OH)₂(H₂O)₈ ⋅ H₂O

Hydrombobomkulite
Current formula: (Ni,Cu)Al₄(NO₃,SO₄)₂(OH)₁₂(H₂O)₁₄
New formula: NiAl₄(NO₃)₂(OH)₁₂(H₂O)₁₄

Johnwalkite
Current formula: K(Mn²⁺,Fe³⁺)₂(Nb,Ta)O₂(PO₄)₂
⋅ 2(H₂O,OH)
New formula: KMn${}_{\mathrm{2}}^{\mathrm{2}+}$NbO₂(PO₄)₂(H₂O)₂
[Cf. olmsteadite: KFe${}_{\mathrm{2}}^{\mathrm{2}+}$NbO₂(PO₄)₂(H₂O)₂]

Laitakarite
Current formula: Bi₄(Se,S)₃
New formula: Bi₄Se₃
[Cf. ikunolite: Bi₄S₃]

Lasnierite
Current formula: (Ca,Sr)(Mg,Fe²⁺)₂Al(PO₄)₃
New formula: CaMg₂Al(PO₄)₃

Lucabindiite
Current formula: (K,NH₄)As₄O₆(Cl,Br)
New formula: K(As₂O₃)₂Cl

Lusernaite-(Y)
Current formula: Y₄Al(CO₃)₂(OH,F)₁₁(H₂O)₄ ⋅ 2H₂O
New formula: Y₄Al(CO₃)₂(OH)₁₁(H₂O)₄ ⋅  2H₂O

Magnesiochlorophoenicite
Current formula: Mg₃Zn₂(AsO₄)(OH,O)₆
New formula: Mg₃Zn₂(OH)₆As[O₃(OH)₃]
[Cf. peterchinite: Zn₃Zn₂(OH)₆As[O₃(OH)₃]]

Magnesioneptunite
Current formula: KNa₂Li(Mg,Fe)₂Ti₂Si₈O₂₄
New formula: KNa₂LiMg₂Ti₂Si₈O₂₄
[Cf. neptunite: KNa₂LiFe${}_{\mathrm{2}}^{\mathrm{2}+}$Ti₂Si₈O₂₄]

Magnesiorowlandite-(Y)
Current formula: Y₄(Mg,Fe)(Si₂O₇)₂F₂
New formula: Y₄Mg(Si₂O₇)₂F₂
[Cf. rowlandite-(Y): Y₄Fe²⁺(Si₂O₇)₂F₂]

Mbobomkulite
Current formula: (Ni,Cu)Al₄(NO₃,SO₄)₂(OH)₁₂(H₂O)₃
New formula: NiAl₄(NO₃)₂(OH)₁₂(H₂O)₃

Mccrillisite
Current formula: NaCs(Be,Li)Zr₂(PO₄)₄ ⋅ 1-2H₂O
New formula: NaCsBeZr₂(PO₄)₄ ⋅ 1-2H₂O

Montroseite
Current formula: (V³⁺,Fe²⁺,V⁴⁺)O(OH)
New formula: V³⁺O(OH)

Murunskite
Current formula: K₂(Cu,Fe)₄S₄
New formula: K₂(Cu${}_{\mathrm{3}}^{+}$Fe³⁺)S₄
[Cf. thalcusite: Tl₂(Cu${}_{\mathrm{3}}^{+}$Fe³⁺)S₄]

Nordgauite
Current formula: MnAl₂(PO₄)₂(F,OH)₂(H₂O)₄ ⋅ H₂O
New formula: MnAl₂(PO₄)₂F₂(H₂O)₄ ⋅ H₂O
[Cf. kayrobertsonite: MnAl₂(PO₄)₂(OH)₂(H₂O)₄ ⋅ 2H₂O]

Ohmilite
Current formula: Sr₃(Ti,Fe³⁺)(Si₂O₆)₂(O,OH)(H₂O)₂
New formula: Sr₃Ti(Si₂O₆)₂O(H₂O)₂
[Cf. yuzuxiangite: Sr₃Fe³⁺(Si₂O₆)₂(OH)(H₂O)₃]

Paraniite-(Y)
Current formula: (Ca,Y,Dy)₂Y(WO₄)₂(AsO₄)
New formula: Ca₂Y(WO₄)₂(AsO₄)

Paratacamite
Current formula: Cu₃(Cu,Zn)(OH)₆Cl₂
New formula: Cu₃Cu(OH)₆Cl₂

Paratacamite-(Mg)
Current formula: Cu₃(Mg,Cu)(OH)₆Cl₂
New formula: Cu₃Mg(OH)₆Cl₂

Paratacamite-(Ni)
Current formula: Cu₃(Ni,Cu)(OH)₆Cl₂
New formula: Cu₃Ni(OH)₆Cl₂

Plumboagardite
Current formula: (Pb,REE,Ca)Cu₆(AsO₄)₃(OH)₆(H₂O)₃
New formula: PbCu₆(AsO4)₂(AsO₃OH)(OH)₆(H₂O)₃
[Cf. zálesíite: CaCu₆(AsO4)₂(AsO₃OH)(OH)₆(H₂O)₃]

Potassiccarpholite
Current formula: K(Mn²⁺,Li)₂Al₄Si₄O₁₂(OH,F)₈
New formula: K(Mn²⁺Li)Al₄Si₄O₁₂(OH)₈

Putzite
Current formula: (Cu,Ag)₈GeS₆
New formula: Cu₈GeS₆
[Cf. argyrodite: Ag₈GeS₆]

Serpierite
Current formula: Ca(Cu,Zn)₄(SO₄)₂(OH)₆(H₂O)₃
New formula: CaCu₄(SO₄)₂(OH)₆(H₂O)₃

Thalcusite
Current formula: Tl₂(Cu,Fe)₄S₄
New formula: Tl₂(Cu${}_{\mathrm{3}}^{+}$Fe³⁺)S₄
[Cf. bukovite: Tl₂(Cu${}_{\mathrm{3}}^{+}$Fe³⁺)Se₄]

Thorutite
Current formula: (Th,U,Ca)Ti₂(O,OH)₆
New formula: ThTi₂O₆
[Cf. brannerite: UTi₂O₆]

Yttrotungstite-(Ce)
Current formula: CeW₂O₆(OH)₃
New formula: CeW₂O₇(OH)(H₂O)
[Cf. yttrotungstite-(Nd): NdW₂O₇(OH)(H₂O)]

Yttrotungstite-(Y)
Current formula: Y(W,Fe,Si,Al,Ti)₂(O,OH,H₂O)₉
New formula: YW₂O₇(OH)(H₂O)
[Cf. yttrotungstite-(Nd): NdW₂O₇(OH)(H₂O)]

Zincobriartite
Current formula: Cu₂(Zn,Fe)(Ge,Ga)S₄
New formula: Cu₂ZnGeS₄
[Cf. briartite: Cu₂FeGeS₄]