IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 62

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 the corresponding author;

• relationship with 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 the 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 June 2021

IMA no. 2021-008

• Gachingite

• Au(Te_1−xSe_x) $\mathrm{0.2}\approx x\le \mathrm{0}$.5

• Gaching ore occurrence, Maletoyvayam ore field, south-western part of the Koryak Highland, central Kamchatka volcanic belt, Far Eastern Region, Russia ($\mathrm{60}{}^{\circ }{\mathrm{19}}^{\prime }{\mathrm{51.87}}^{\prime \prime }$ N, $\mathrm{164}{}^{\circ }{\mathrm{46}}^{\prime }{\mathrm{25.65}}^{\prime \prime }$ E)

• Nadhezda D. Tolstykh, Marek Tuhý*, Anna Vymazalová, Jakub Plášil, František Laufek, Filip Košek, and Evgeny G. Sidorov

• *E-mail: marek.tuhy@geology.cz

• Known synthetic analogue

• Orthorhombic: Cmce

• a=7.54, b=5.74, c=8.90 Å

• 4.462(41), 3.194(27), 2.884(74), 2.878(69), 2.734(100), 2.231(28), 2.215(43), 1.813(62)

• Type material is deposited in the mineralogical collections of the Central Siberian Geological Museum (CSGM), V. S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Science, prosp. Akad. Koptyuga 3, 630090 Novosibirsk, Russia, catalogue number V-10/1

• How to cite: Tolstykh, N. D., Tuhý, M., Vymazalová, A., Plášil, J., Laufek, F., Košek, F., and Sidorov, E. G.: Gachingite, IMA 2021-008, in: CNMNC Newsletter 62, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-479-2021, 2021.

IMA no. 2021-013

• Calciohatertite

• NaNaCa(CaFe³⁺)(AsO₄)₃

• Arsenatnaya fumarole, second scoria cone of the Northern Breakthrough of the Great Tolbachik fissure eruption, Tolbachik volcano, Kamchatka, Far Eastern Region, Russia ($\mathrm{55}{}^{\circ }{\mathrm{41}}^{\prime }$ N, $\mathrm{160}{}^{\circ }{\mathrm{14}}^{\prime }$ E; 1200 m a.s.l.)

• Natalia N. Koshlyakova*, Igor V. Pekov, Dmitry I. Belakovskiy, Marina F. Vigasina, Natalia V. Zubkova, Atali A. Agakhanov, Sergey N. Britvin, Evgeny G. Sidorov, and Dmitry Y. Pushcharovsky

• *E-mail: nkoshlyakova@gmail.com

• Alluaudite supergroup

• Monoclinic: C2/c; structure determined

• a = 12.6092(8), b = 13.2434(5), c = 6.8096(3) Å, β= 114.554(7)^∘

• 6.64(11), 3.714(16), 3.252(15), 3.093(14), 3.066(12), 2.922(17), 2.885(100), 2.665(25)

• 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 5641/1

• How to cite: Koshlyakova, N. N., Pekov, I. V., Belakovskiy, D. I., Vigasina, M. F., Zubkova, N. V., Agakhanov, A. A., Britvin, S. N., Sidorov, E. G., and Pushcharovsky, D. Y.: Calciohatertite, IMA 2021-013, in: CNMNC Newsletter 62, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-479-2021, 2021.

IMA no. 2021-018

• Tennantite-(Ni)

• Cu₆(Cu₄Ni₂)As₄S₁₃

• Luobusa deposit, about 16 km north-east of Qusum County, Tibet, China ($\mathrm{29}{}^{\circ }{\mathrm{10}}^{\prime }{\mathrm{58.0}}^{\prime \prime }$ N, $\mathrm{92}{}^{\circ }{\mathrm{17}}^{\prime }{\mathrm{47.6}}^{\prime \prime }$ E)

• Yanjuan Wang, Rujun Chen, Xiangping Gu*, Zhusen Yang, Zenqian Hou, Guang Fan, Lijuan Ye, and Kai Qu

• *E-mail: guxp2004@163.com

• Tetrahedrite group

• Cubic: $I\stackrel{\mathrm{‾}}{\mathrm{4}}\mathrm{3}m$; structure determined

• a = 10.2957(9) Å

• 4.233(27), 2.968(100), 2.753(13), 2.563(20), 2.017(13), 1.815(33), 1.549(27)

• 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 M16117

• How to cite: Wang, Y., Chen, R., Gu, X., Yang, Z., Hou, Z., Fan, G., Ye, L., and Qu, K.: Tennantite-(Ni), IMA 2021-018, in: CNMNC Newsletter 62, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-479-2021, 2021.

IMA no. 2021-019

• Tomiolloite

• Al₁₂(Te⁴⁺O₃)₅[(SO₃)_0.5(SO₄)_0.5](OH)₂₄

• Bambolla Mine (Moctezuma Mine), Moctezuma, Sonora, Mexico ($\mathrm{29}{}^{\circ }{\mathrm{41}}^{\prime }{\mathrm{30}}^{\prime \prime }$ N, $\mathrm{109}{}^{\circ }{\mathrm{42}}^{\prime }{\mathrm{43}}^{\prime \prime }$ W)

• Owen P. Missen*, Stuart J. Mills, Mike S. Rumsey, John Spratt, Jens Najorka, Anthony R. Kampf, and Brent Thorne

• *E-mail: omissen@museum.vic.gov.au

• New structure type

• Hexagonal: P6${}_{\mathrm{3}}/m$; structure determined

• a = 13.336(2), c = 11.604(2) Å

• 11.667(89), 8.240(38), 4.395(29), 4.107(29), 3.503(31), 3.223(100), 2.905(37), 2.593(21)

• Type material is deposited in the mineralogical collections of the Museums Victoria, GPO Box 666, Melbourne 3001, Victoria, Australia, specimen number M55489

• How to cite: Missen, O. P., Mills, S. J., Rumsey, M. S., Spratt, J., Najorka, J., Kampf, A. R., and Thorne, B.: Tomiolloite, IMA 2021-019, in: CNMNC Newsletter 62, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-479-2021, 2021.

IMA no. 2021-020

• Shasuite

• CaNi₃(P₂O₇)₂

• Halamish Wadi (Nahal Halamish), Hatrurim basin, Negev desert, Israel ($\mathrm{31}{}^{\circ }{\mathrm{09}}^{\prime }{\mathrm{47}}^{\prime \prime }$ N, $\mathrm{35}{}^{\circ }{\mathrm{17}}^{\prime }{\mathrm{57}}^{\prime \prime }$ E)

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

• *E-mail: sbritvin@gmail.com

• Known synthetic analogue

• Monoclinic: P2₁/c; structure determined

• a = 7.330(2), b = 7.573(2), c = 9.391(3) Å, β= 112.02(3)^∘

• 6.796(38), 5.058(32), 3.787(28), 3.070(50), 2.921(100), 2.901(29), 2.648(32), 2.425(28)

• 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 5630/1

• How to cite: Britvin, S. N., Murashko, M. N., Vapnik, Y., Vlasenko, N. S., Vereshchagin, O. S., Krzhizhanovskaya, M. G., and Bocharov, V. N.: Shasuite, IMA 2021-020, in: CNMNC Newsletter 62, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-479-2021, 2021.

IMA no. 2021-021

• Illoqite-(Ce)

• Na₂NaBaCeZnSi₆O₁₇

• Taseq Slope, northern part of Ilímaussaq alkaline complex, Greenland, Denmark ($\mathrm{60}{}^{\circ }{\mathrm{57}}^{\prime }{\mathrm{42}}^{\prime \prime }$ N, $\mathrm{45}{}^{\circ }{\mathrm{57}}^{\prime }{\mathrm{42}}^{\prime \prime }$ W)

• Emil Holtung Gulbransen, Fabrice Dal Bo, Muriel M. L. Erambert, and Henrik Friis*

• *E-mail: henrik.friis@nhm.uio.no

• Nordite group

• Orthorhombic: Pcca; structure determined

• a = 14.5596(4), b = 5.2213(1), c = 19.8270(4) Å

• 7.266(79), 4.688(44), 4.241(64), 3.486(79), 3.340(52), 2.986(67), 2.882(100), 2.789(44)

• Type material is deposited in the mineralogical collections of the Natural History Museum, University of Oslo, NHM Økern, Kabelgata 38-40, 0580 Oslo, Norway, catalogue numbers KNR 44274 and KNR 44275

• How to cite: Gulbransen, E. H., Dal Bo, F., Erambert, M. M. L., and Friis, H.: Illoqite-(Ce), IMA 2021-021, in: CNMNC Newsletter 62, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-479-2021, 2021.

IMA no. 2021-024

• Paramarkeyite

• Ca₂(UO₂)(CO₃)₃•5H₂O

• Markey Mine, Red Canyon, White Canyon District, San Juan Co., Utah, USA ($\mathrm{37}{}^{\circ }{\mathrm{32}}^{\prime }{\mathrm{57}}^{\prime \prime }$ N, $\mathrm{110}{}^{\circ }{\mathrm{18}}^{\prime }{\mathrm{08}}^{\prime \prime }$ W)

• Anthony R. Kampf*, Travis A. Olds, Jakub Plášil, Peter C. Burns, Radek Škoda, and Joe Marty

• *E-mail: akampf@nhm.org

• Chemically and structurally related to markeyite and pseudomarkeyite

• Monoclinic: P2${}_{\mathrm{1}}/n$; structure determined

• a = 17.9507(7), b = 18.1030(8), c = 18.369(1) Å, β= 108.029(8)^∘

• 8.54(100), 6.31(91), 5.66(45), 5.52(46), 4.759(45), 4.371(97), 3.544(41), 2.858(38)

• 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 numbers 67487 and 67488

• How to cite: Kampf, A. R., Olds, T. A., Plášil, J., Burns, P. C., Škoda, R., and Marty, J.: Paramarkeyite, IMA 2021-024, in: CNMNC Newsletter 62, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-479-2021, 2021.

IMA no. 2021-025

• Zoisite-(Pb)

• CaPbAl₃[Si₂O₇][SiO₄]O(OH)

• Jakobsberg, Filipstad district, Värmland County, Sweden ($\mathrm{59}{}^{\circ }{\mathrm{49}}^{\prime }{\mathrm{40}}^{\prime \prime }$ N, $\mathrm{14}{}^{\circ }{\mathrm{06}}^{\prime }{\mathrm{25}}^{\prime \prime }$ E)

• Natale Perchiazzi*, Knut Eldjarn, Daniela Mauro, and Pietro Vignola

• *E-mail: natale.perchiazzi@unipi.it

• Epidote supergroup

• Orthorhombic: Pnma; structure determined

• a = 16.3978(6), b = 5.5953(2), c = 10.1953(3) Å

• 8.63(s), 8.11(mw), 4.895(m), 4.210(m), 3.660(s), 3.097(mw), 2.900(s), 2.725(m)

• 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 19927

• How to cite: Perchiazzi, N., Eldjarn, K., Mauro, D., and Vignola, P.: Zoisite-(Pb), IMA 2021-025, in: CNMNC Newsletter 62, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-479-2021, 2021.

IMA no. 2021-026

• Nabateaite

• Fe₂P₂O₇

• Halamish Wadi (Nahal Halamish), Hatrurim basin, Negev desert, Israel ($\mathrm{31}{}^{\circ }{\mathrm{09}}^{\prime }{\mathrm{47}}^{\prime \prime }$ N, $\mathrm{35}{}^{\circ }{\mathrm{17}}^{\prime }{\mathrm{57}}^{\prime \prime }$ E)

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

• *E-mail: sbritvin@gmail.com

• Known synthetic analogue

• Triclinic: $P\stackrel{\mathrm{‾}}{\mathrm{1}}$; structure determined

• a = 4.488(2), b = 5.299(3), c = 5.483(3) Å, α=103.96(4), β=98.28(4), γ=98.71(3)^∘

• 4.357(19), 3.074(38), 3.056(66), 3.025(100), 2.951(97), 2.627(15), 2.613(22), 2.166(14)

• 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 5684/1

• How to cite: Britvin, S. N., Murashko, M. N., Vapnik, Y., Vlasenko, N. S., Vereshchagin, O. S., Krzhizhanovskaya, M. G., and Bocharov, V. N.: Nabateaite, IMA 2021-026, in: CNMNC Newsletter 62, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-479-2021, 2021.

IMA no. 2021-027

• Pseudodickthomssenite

• Mg(VO₃)₂•8H₂O

• Pickett Corral mine, Bull Canyon, Montrose Co., Colorado, USA ($\mathrm{38}{}^{\circ }{\mathrm{11}}^{\prime }{\mathrm{58}}^{\prime \prime }$ N, $\mathrm{108}{}^{\circ }{\mathrm{50}}^{\prime }{\mathrm{24}}^{\prime \prime }$ W)

• Anthony R. Kampf*, John M. Hughes, Chi Ma, and Joe Marty

• *E-mail: akampf@nhm.org

• Chemically and structurally related to dickthomssenite

• Triclinic: $P\stackrel{\mathrm{‾}}{\mathrm{1}}$; structure determined

• a = 7.3566(6), b = 9.4672(9), c = 9.5529(9) Å, α= 104.205(7), β=100.786(7), γ=100.157(7)^∘

• 8.971(100), 7.494(10), 4.578(15), 4.473(21), 3.502(15), 2.979(31), 2.906(12), 1.840(12)

• 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 76141

• How to cite: Kampf, A. R., Hughes, J. M., Ma, C., and Marty, J.: Pseudodickthomssenite, IMA 2021-027, in: CNMNC Newsletter 62, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-479-2021, 2021.

IMA no. 2021-029

• Samraite

• Ni₂P₂O₇

• Halamish Wadi (Nahal Halamish), Hatrurim basin, Negev desert, Israel ($\mathrm{31}{}^{\circ }{\mathrm{09}}^{\prime }{\mathrm{47}}^{\prime \prime }$ N, $\mathrm{35}{}^{\circ }{\mathrm{17}}^{\prime }{\mathrm{57}}^{\prime \prime }$ E)

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

• *E-mail: sbritvin@gmail.com

• Known synthetic analogue

• Monoclinic: P2₁/c; structure determined

• a = 4.4640(4), b = 9.8966(10), c = 5.2133(6) Å, β=97.505(4)^∘

• 4.948(10), 4.426(13), 3.013(64), 2.912(100), 2.500(20), 2.115(13), 2.039(17), 1.962(13)

• 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 5630/1

• How to cite: Britvin, S. N., Murashko, M. N., Vereshchagin, O. S., Vapnik, Y., Vlasenko, N. S., Krzhizhanovskaya, M. G., and Bocharov, V. N.: Samraite, IMA 2021-029, in: CNMNC Newsletter 62, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-479-2021, 2021.

IMA no. 2021-030

• Sapozhnikovite

  Na₈(Al₆Si₆O₂₄)(HS)₂

• Karnasurt Mountain, northern part of the Lovozero alkaline massif, Kola Peninsula, Russia ($\mathrm{67}{}^{\circ }{\mathrm{52}}^{\prime }{\mathrm{59}}^{\prime \prime }$ N, $\mathrm{34}{}^{\circ }{\mathrm{37}}^{\prime }{\mathrm{59}}^{\prime \prime }$ E)

• Nikita V. Chukanov*, Natalia V. Zubkova, Igor V. Pekov, Roman Y. Shendrik, Dmitry A. Varlamov, Marina F. Vigasina, Dmitry I. Belakovskiy, Sergey N. Britvin, Vasiliy O. Yapaskurt, and Dmitry Y. Pushcharovsky

• *E-mail: sbritvin@gmail.com

• Sodalite group

• Cubic: $P\stackrel{\mathrm{‾}}{\mathrm{4}}\mathrm{3}n$; structure determined

• a = 8.91462(7) Å

• 6.30(37), 3.638(100), 2.821(14), 2.572(18), 2.382(16), 2.101(29), 1.576(8), 1.486(8)

• 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 5693/1

• How to cite: Chukanov, N. V., Zubkova, N. V., Pekov, I. V., Shendrik, R. Y., Varlamov, D. A., Vigasina, M. F., Belakovskiy, D. I., Britvin, S. N., Yapaskurt, V. O., and Pushcharovsky, D. Y.: Sapozhnikovite, IMA 2021-030, in: CNMNC Newsletter 62, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-479-2021, 2021.

IMA no. 2021-031

• Tetrahedrite-(Ni)

• Cu₆(Cu₄Ni₂)Sb₄S₁₃

• Luobusa deposit, about 16 km north-east of Qusum County, Tibet, China ($\mathrm{29}{}^{\circ }{\mathrm{10}}^{\prime }{\mathrm{58.0}}^{\prime \prime }$ N, $\mathrm{92}{}^{\circ }{\mathrm{17}}^{\prime }{\mathrm{47.6}}^{\prime \prime }$ E)

• Yanjuan Wang, Rujun Chen, Xiangping Gu*, Zenqian Hou, Zhusen Yang, Guochen Dong, Hu Guo, and Kai Qu

• *E-mail: guxp2004@163.com

• Tetrahedrite group

• Cubic: $I\stackrel{\mathrm{‾}}{\mathrm{4}}\mathrm{3}m$; structure determined

• a = 10.3478(4) Å

• 2.987(100), 3.659(10), 2.766(9), 2.587(21), 2.439(8), 2.029(6), 1.829(41), 1.560(21)

• 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 M16119

• How to cite: Wang, Y., Chen, R., Gu, X., Hou, Z., Yang, Z., Dong, G., Guo, H., and Qu, K.: Tetrahedrite-(Ni), IMA 2021-031, in: CNMNC Newsletter 62, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-479-2021, 2021.

2 New mineral proposals approved in July 2021

IMA no. 2021-032

• Qeltite

• Ca₃TiSi₂(Fe${}_{\mathrm{2}}^{\mathrm{3}+}$Si)O₁₄

• Nabi Musa, Judean Desert, West Bank, Palestine ($\mathrm{31}{}^{\circ }{\mathrm{48}}^{\prime }$ N, $\mathrm{35}{}^{\circ }{\mathrm{25}}^{\prime }$ E)

• Irina O. Galuskina*, Marcin Stachowicz, Yevgeny Vapnik, Grzegorz Zeliński, Krzysztof Woźniak, and Evgeny Galuskin

• *E-mail: irina.galuskina@us.edu.pl

• The Fe³⁺ analogue of paqueite

• Trigonal: P32₁; structure determined

• a = 8.0077(5), c = 4.9956(4) Å

• 6.935(31), 4.004(13), 3.124(100), 2.849(61), 2.621(27), 2.321(45), 1.923(13), 1.808(30)

• 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 5695/1

• How to cite: Galuskina, I. O., Stachowicz, M., Vapnik, Y., Zeliński, G., Woźniak, K., and Galuskin, E.: Qeltite, IMA 2021-032, in: CNMNC Newsletter 62, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-479-2021, 2021.

IMA no. 2021-033

• Sergeysmirnovite

• MgZn₂(PO₄)₂•4H₂O

• Kester deposit, Yana-Adycha Region, Verkhoyansk District, Republic of Sakha (Yakutia), Russia

• Victor N. Yakovenchuk, Yakov A. Pakhomovsky, Nataliya G. Konoplyova, Taras L. Panikorovskii, Ayya Bazai, Julia A. Mikhailova, Vladimir N. Bocharov, and Sergey V. Krivovichev

• *E-mail: skrivovi@mail.ru

• A dimorph of reaphookhillite

• Orthorhombic: Pnma; structure determined

• a = 10.6286(4), b = 18.3700(6), c = 5.0206(2) Å

• 5.28(100), 4.576(33), 3.999(24), 3.877(24), 3.387(22), 3.015(44), 2.854(57), 3.647(34)

• Type material is deposited in the collections of the Mineralogical Museum of St. Petersburg State University, 7–9 Universitetskaya nab., St. Petersburg 199034, Russia, catalogue no. 19659/1

• How to cite: Yakovenchuk, V. N., Pakhomovsky, Y. A., Konoplyova, N. G., Panikorovskii, T. L., Bazai, A., Mikhailova, J. A., Bocharov, V. N., and Krivovichev, S. V.: Sergeysmirnovite, IMA 2021-033, in: CNMNC Newsletter 62, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-479-2021, 2021.

IMA no. 2021-034

• Goldhillite

• Cu₅Zn(AsO₄)₂(OH)₆•H₂O

• Middle Pit, Gold Hill Mine, Tooele Co., Utah, USA ($\mathrm{40}{}^{\circ }{\mathrm{26}}^{\prime }{\mathrm{55}}^{\prime \prime }$ N, $\mathrm{113}{}^{\circ }{\mathrm{07}}^{\prime }{\mathrm{52}}^{\prime \prime }$ W)

• Rezeda M. Ismagilova, Anthony R. Kampf, Elena S. Zhitova, Andrey A. Zolotarev, Justyna Ciesielczuk, Julia A. Mikhailova, Dmitry I. Belakovsky, Vladimir N. Bocharov, Vladimir V. Shilovskikh, Natalia S. Vlasenko, Barbara P. Nash, and Sergey V. Krivovichev*

• *E-mail: skrivovi@mail.ru

• The As analogue of kipushite

• Monoclinic: P2${}_{\mathrm{1}}/c$; structure determined

• a = 12.3573(5), b = 9.2325(3), c = 10.7163(4) Å, β=97.346(4)^∘

• 6.29(10), 4.32(17), 4.09(28), 3.41(23), 2.57(100), 2.17(18), 1.95(22), 1.54(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 number 88338 (holotype), and the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue number 76142 (cotype)

• How to cite: Ismagilova, R. M., Kampf, A. R., Zhitova, E. S., Zolotarev, A. A., Ciesielczuk, J., Mikhailova, J. A., Belakovsky, D. I., Bocharov, V. N., Shilovskikh, V. V., Vlasenko, N. S., Nash, B. P., and Krivovichev, S. V.: Goldhillite, IMA 2021-034, in: CNMNC Newsletter 62, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-479-2021, 2021.

IMA no. 2021-035

• Igelströmite

• Fe³⁺(SbPb)O₄

• Långban deposit, Filipstad district, Värmland, Sweden (59.85^∘ N, 14.26^∘ E; 215 m a.s.l.)

• Jörgen Langhof*, Henrik Friis, Andreas Karlsson, Dan Holtstam, and Muriel Erambert

• *E-mail: jorgen.langhof@nrm.se

• Known synthetic analogue

• Tetragonal: P4${}_{\mathrm{2}}/$mbc; structure determined

• a = 8.4856(2), c = 6.0450(3) Å

• 4.25(14), 3.21(100), 3.01(13), 2.687(20), 2.462(22), 1.946(19), 1.778(14), 1.667(16)

• Type material is deposited in the mineralogical collections of the Department of Geosciences, Swedish Museum of Natural History, Box 50007, SE-10405 Stockholm, Sweden, collection number GEO-NRM 19255056 (holotype), and the Natural History Museum, University of Oslo, NHM Økern, Kabelgata 38-40, 0580 Oslo, Norway, catalogue number KNR 44278 (cotype)

• How to cite: Langhof, J., Friis, H., Karlsson, A., Holtstam, D., and Erambert, M.: Igelströmite, IMA 2021-035, in: CNMNC Newsletter 62, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-479-2021, 2021.

IMA no. 2021-037

• Betzite

• Na₆Ca₂(Al₆Si₆O₂₄)Cl₄

• Bellerberg paleovolcano, between Mayen and Kottenheim, Lake Laach area, eastern Eifel region, Rhineland-Palatinate, Germany

• Nikita V. Chukanov*, Natalia V. Zubkova, Olga N. Kazheva, Dmitry A. Varlamov, Igor V. Pekov, Dmitry I. Belakovskiy, Bernd Ternes, Willi Schüller, Sergey N. Britvin, and Dmitry Y. Pushcharovsky

• *E-mail: nikchukanov@yandex.ru

• Cancrinite group

• Hexagonal: P6₃; structure determined

• a = 12.8166(9), c = 5.3562(3) Å

• 11.14(31), 4.833(93), 3.715(95), 3.313(100), 2.787(37), 2.681(56), 2.474(35), 2.146(24)

• 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 5706/1

• How to cite: Chukanov, N. V., Zubkova, N. V., Kazheva, O. N., Varlamov, D. A., Pekov, I. V., Belakovskiy, D. I., Ternes, B., Schüller, W., Britvin, S. N., and Pushcharovsky, D. Y.: Betzite, IMA 2021-037, in: CNMNC Newsletter 62, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-479-2021, 2021.