IMA no. 2019-128

• Ammoniotinsleyite

• (NH₄)Al₂(PO₄)₂(OH) • 2H₂O

• In a guano deposit on the lower part of the steep southern slope of Pabellón de Pica, near Chanabaya, Iquique Province, Tarapacá, Chile (20^∘${\mathrm{54}}^{\prime }{\mathrm{55}}^{\prime \prime }$ S, 70^∘${\mathrm{08}}^{\prime }{\mathrm{25}}^{\prime \prime }$ W)

• Nikita V. Chukanov*, Gerhard Möhn, Igor V. Pekov, Natalia V. Zubkova, Dmitry A. Ksenofontov, Dmitry I. Belakovskiy, Svetlana A. Vozchikova, Sergey N. Britvin, and Joy Desor

• *E-mail: nikchukanov@yandex.ru

• The NH₄-dominant analogue of tinsleyite

• Monoclinic: P2₁/n; structure determined

• a=9.5871(1), b=9.6089(1), c=9.6467(1) Å, β=103.446(1)^∘

• 7.50(23), 6.71(79), 5.947(100), 4.676(36), 3.032(28), 2.958(25), 2.846(22), 2.635(29)

• 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 5510/1

• How to cite: Chukanov, N. V., Möhn, G., Pekov, I. V., Zubkova, N. V., Ksenofontov, D. A., Belakovskiy, D. I., Vozchikova, S. A., Britvin, S. N., and Desor, J.: Ammoniotinsleyite, IMA 2019-128, in: CNMNC Newsletter 55, Eur. J. Mineral., 32, https://doi.org/10.5194/ejm-32-367-2020, 2020.

IMA no. 2019-129

• Tomamaeite

• Cu₃Pt

• As inclusions in platinum-group mineral (PGM) grain from the coast, Tomamae, Hokkaido, Japan (44^∘${\mathrm{17}}^{\prime }{\mathrm{09}}^{\prime \prime }$ N, 141^∘${\mathrm{38}}^{\prime }{\mathrm{58}}^{\prime \prime }$ E)

• Daisuke Nishio-Hamane* and Katsuyuki Saito

• *E-mail: hamane@issp.u-tokyo.ac.jp

• The Pt analogue of auricupride

• Cubic: Pm$\stackrel{\mathrm{‾}}{\mathrm{3}}$ m

• a=3.683(2) Å

• 2.596(35), 2.123(100), 1.843(96), 1.646(28), 1.303(42)

• Type material is deposited in the mineralogical collections of the National Museum of Nature and Science, Tsukuba, Japan, specimen number NSM-47328

• How to cite: Nishio-Hamane, D. and Saito, K.: Tomamaeite, IMA 2019-129, in: CNMNC Newsletter 55, Eur. J. Mineral., 32, https://doi.org/10.5194/ejm-32-367-2020, 2020.

IMA no. 2019-130

• Pokhodyashinite

• Cu₂Tl₃Sb₅As₂S₁₃

• Vorontsovskoe gold deposit, ca. 13 km S of the city of Krasnoturinsk, Sverdlovsk Oblast, Northern Urals, Russia (59^∘${\mathrm{38}}^{\prime }{\mathrm{52}}^{\prime \prime }$ N, 60^∘${\mathrm{12}}^{\prime }{\mathrm{55}}^{\prime \prime }$ E)

• Anatoly V. Kasatkin*, Emil Makovicky, Jakub Plášil, Radek Škoda, Atali A. Agakhanov, and Mikhail V. Tsyganko

• *E-mail: anatoly.kasatkin@gmail.com

• New structure type

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

• a=7.996(2), b=11.882(2), c=14.061(3) Å, α=109.80(2), β=90.04(2), γ=99.68(2)^∘

• 3.836(53), 3.834(55), 3.674(100), 3.463(97), 2.996(67), 2.994(73), 2.847(41), 2.750(98)

• 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 5517/1

• How to cite: Kasatkin, A. V., Makovicky, E., Plášil, J., Škoda, R., Agakhanov, A. A., and Tsyganko, M. V.: Pokhodyashinite, IMA 2019-130, in: CNMNC Newsletter 55, Eur. J. Mineral., 32, https://doi.org/10.5194/ejm-32-367-2020, 2020.

IMA no. 2019-131

• Trebiskyite

• Na₃Mg₂[TiV₉O₂₈]•22H₂O

• Pickett Corral mine, Bull Canyon, Montrose Co., Colorado, USA (38^∘${\mathrm{11}}^{\prime }{\mathrm{43}}^{\prime \prime }$ N, 108^∘${\mathrm{50}}^{\prime }{\mathrm{36}}^{\prime \prime }$ W)

• Travis A. Olds*, Anthony R. Kampf, Mark A. Cooper, Paul M. Adams, and Joe Marty

• *E-mail: toldxls@gmail.com

• New structure type

• Monoclinic: P2₁∕c; structure determined

• a=9.478(4), b=21.426(11), c=11.267(5) Å, β=114.572(7)^∘

• 10.73(87), 9.24(100), 8.52(78), 7.99(52), 3.294(18), 3.056(26), 2.855(18), 2.752(23)

• Cotype 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 74521, 74522, 74523, and 74524

• How to cite: Olds, T. A., Kampf, A. R., Cooper, M. A., Adams, P. M., and Marty, J.: Trebiskyite, IMA 2019-131, in: CNMNC Newsletter 55, Eur. J. Mineral., 32, https://doi.org/10.5194/ejm-32-367-2020, 2020.

IMA no. 2019-132

• Pyradoketosite

• Ag₃SbS₃

• Sant'Olga tunnel, Monte Arsiccio mine, Stazzema (LU), Apuan Alps, Tuscany, Italy (43^∘58^′ N, 10^∘17^′ E)

• Cristian Biagioni*, Luca Bindi, Yves Moëlo, Christopher J. Stanley, and Federica Zaccarini

• *E-mail: cristian.biagioni@unipi.it

• A polymorph of Ag₃SbS₃ after pyrargyrite and pyrostilpnite

• Monoclinic: P2₁∕n; structure determined

• a=13.751(1), b=6.9350(6), c=19.555(2) Å, β=94.807(4)^∘

• 6.4(w), 3.381(mw), 3.035(s), 2.505(mw), 2.441(mw), 2.160(mw), 1.912(mw), 1.878(mw)

• 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 19913

• How to cite: Biagioni, C., Bindi, L., Moëlo, Y., Stanley, C. J., and Zaccarini, F.: Pyradoketosite, IMA 2019-132, in: CNMNC Newsletter 55, Eur. J. Mineral., 32, https://doi.org/10.5194/ejm-32-367-2020, 2020.

IMA no. 2019-133

• Nioboheftetjernite

• ScNbO₄

• Befanamo, 80 km north of Antananarivo, along upper Betsiboka River, Analamanga, Madagascar

• Inna Lykova*, Ralph Rowe, Glenn Poirier, Andrew M. McDonald, and Gerald Giester

• *E-mail: ilykova@nature.ca

• Wolframite group

• Monoclinic: P2₁∕c; structure determined

• a=4.7092(3), b=5.6531(4), c=5.0530(4) Å, β=90.453(3)^∘

• 4.722(22), 3.776(22), 3.628(44), 2.961(100), 2.938(83), 2.534(18), 2.472(30), 1.445(21)

• Type material is deposited in the mineralogical collections of the Canadian Museum of Nature, 240 McLeod Street, Ottawa, Ontario, Canada, catalogue number CMNMC 51710

• How to cite: Lykova, I., Rowe, R., Poirier, G., McDonald, A. M., and Giester, G.: Nioboheftetjernite, IMA 2019-133, in: CNMNC Newsletter 55, Eur. J. Mineral., 32, https://doi.org/10.5194/ejm-32-367-2020, 2020.

IMA no. 2019-134

• Natrosulfatourea

• Na₂(SO₄)[CO(NH₂)₂]

• Rowley mine (125-foot level), ca. 20 km NW of Theba, Maricopa Co., Arizona, USA (33^∘${\mathrm{02}}^{\prime }{\mathrm{57}}^{\prime \prime }$ N, 113^∘${\mathrm{01}}^{\prime }{\mathrm{50}}^{\prime \prime }$ W)

• Anthony R. Kampf*, Aaron J. Celestian, Barbara P. Nash, and Joe Marty

• *E-mail: akampf@nhm.org

• New structure type

• Orthorhombic: Pbcn; structure determined

• a=5.5918(4), b=18.181(1), c=6.7179(5) Å

• 9.08(100), 5.34(36), 4.179(77), 3.765(34), 3.047(61), 2.835(29), 2.792(29), 2.599(33)

• Cotype 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 74491 and 74492

• How to cite: Kampf, A. R., Celestian, A. J., Nash, B. P., and Marty, J.: Natrosulfatourea, IMA 2019-134, in: CNMNC Newsletter 55, Eur. J. Mineral., 32, https://doi.org/10.5194/ejm-32-367-2020, 2020.

IMA no. 2019-135

• Arsenotučekite

• Ni₁₈Sb₃AsS₁₆

• Tsangli chromite deposit, Othrys ophiolite, Greece

• Federica Zaccarini*, Luca Bindi, Basilios Tsikouras, Tassos Grammatikopoulos, Christopher J. Stanley, and Giorgio Garuti

• *E-mail: federica.zaccarini@unileoben.ac.at

• Hauchecornite group

• Tetragonal: I4∕mmm; structure determined

• a=9.7856(3), c=10.7582(6) Å

• 3.560(56), 3.094(85), 2.682(81), 2.357(96), 2.188(75), 1.810(100), 1.751(91), 1.730(47)

• Type material is deposited in the mineralogical collections of the Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom, catalogue number BM 2020,1

• How to cite: Zaccarini, F., Bindi, L., Tsikouras, B., Grammatikopoulos, T., Stanley, C. J., and Garuti, G.: Arsenotučekite, IMA 2019-135, in: CNMNC Newsletter 55, Eur. J. Mineral., 32, https://doi.org/10.5194/ejm-32-367-2020, 2020.

IMA no. 2019-136

• Richardsite

• Zn₂CuGaS₄

• Merelani mines, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania

• Luca Bindi and John A. Jaszczak

• *E-mail: luca.bindi@unifi.it

• Stannite group

• Tetragonal: $I\stackrel{\mathrm{‾}}{\mathrm{4}}\mathrm{2}m$; structure determined

• a=5.3626(2), c=10.5873(5) Å

• 3.084(100), 1.898(20), 1.882(40), 1.614(20), 1.600(10), 1.092(10)

• Type material is deposited in the mineralogical collections of the Museo di Storia Naturale, Università di Firenze, Via La Pira 4, I-50121, Florence, Italy, catalogue number 3555/I

• How to cite: Bindi, L. and Jaszczak, J. A.: Richardsite, IMA 2019-136, in: CNMNC Newsletter 55, Eur. J. Mineral., 32, https://doi.org/10.5194/ejm-32-367-2020, 2020.

IMA no. 2020-001

• Heamanite-(Ce)

• (K_0.5Ce_0.5)TiO₃

• As inclusions in a diamond from the Gahcho Kué mine (5034 pipe), Northwest Territories, Canada (63^∘${\mathrm{26}}^{\prime }{\mathrm{04}}^{\prime \prime }$ N, 109^∘${\mathrm{11}}^{\prime }{\mathrm{10}}^{\prime \prime }$ W)

• Chiara Anzolini*, William Siva-Jothy, Andrew J. Locock, Fabrizio Nestola, Tonci Balić-Žunić, Matteo Alvaro, Thomas Stachel, and D. Graham Pearson

• *E-mail: anzolini@ualberta.ca

• Perovskite group

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

• a=3.9129(9) Å

• 2.764(100), 2.259(7), 1.954(31), 1.596(42), 1.382(20), 1.236(15), 1.128(8), 1.045(19)

• Type material is deposited in the mineralogical collections of the Royal Ontario Museum, 100 Queen's Park, Toronto, ON M5S 2C6, Canada, catalogue number M59970

• How to cite: Anzolini, C., Siva-Jothy, W., Locock, A. J., Nestola, F., Balić-Žunić, T., Alvaro, M., Stachel, T., and Pearson, D. G.: Heamanite-(Ce), IMA 2020-001, in: CNMNC Newsletter 55, Eur. J. Mineral., 32, https://doi.org/10.5194/ejm-32-367-2020, 2020.

IMA no. 2020-002

• Priscillagrewite-(Y)

• YCa₂Zr₂Al₃O₁₂

• Daba marble quarry, Tulul Al Hammam area, Hatrurim Complex, Jordan (31^∘${\mathrm{32}}^{\prime }{\mathrm{31}}^{\prime \prime }$ N, 36^∘${\mathrm{10}}^{\prime }{\mathrm{19}}^{\prime \prime }$ E)

• Irina Galuskina*, Evgeny Galuskin, Yevgeny Vapnik, Grzegorz Zeliński, and Krystian Prusik

• *E-mail: irina.galuskina@us.edu.pl

• Garnet supergroup

• Cubic: $Ia\stackrel{\mathrm{‾}}{\mathrm{3}}d$

• a=12.50(3) Å

• 4.420(100), 3.126(82), 2.796(36), 2.552(86), 2.452(11), 2.283(12), 2.028(9), 1.977(40)

• Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18/k, Moscow 115162, Russia, catalogue number 5540/1

• How to cite: Galuskina, I., Galuskin, E., Vapnik, Y., Zeliński, G., and Prusik, K.: Priscillagrewite-(Y), IMA 2020-002, in: CNMNC Newsletter 55, Eur. J. Mineral., 32, https://doi.org/10.5194/ejm-32-367-2020, 2020.

• IMA no. 2020-003

• Manganoarrojadite-(KNa)

• KNa₅MnFe₁₃Al(PO₄)₁₁(PO₃OH)(OH)₂

• Palermo No. 1 mine, Grafton Co., New Hampshire, USA (43^∘${\mathrm{45}}^{\prime }{\mathrm{04}}^{\prime \prime }$ N, 71^∘${\mathrm{53}}^{\prime }{\mathrm{22}}^{\prime \prime }$ W)

• Inna Lykova*, Ralph Rowe, Glenn Poirier, Henrik Friis, and Kate Helwig

• *E-mail: ilykova@nature.ca

• Arrojadite group

• Monoclinic: Cc; structure determined

• a=16.5345(3), b=10.0406(2), c=24.6261(5) Å, β=105.891(2)^∘

• 5.902(24), 5.025(24), 3.401(21), 3.208(47), 3.048(100), 2.853(20), 2.758(24), 2.704(70)

• Type material is deposited in the mineralogical collections of the Canadian Museum of Nature, 240 McLeod Street, Ottawa, Ontario K2P 2R1, Canada, catalogue number CMNMC 47194

• How to cite: Lykova, I., Rowe, R., Poirier, G., Friis, H., and Helwig, K.: Manganoarrojadite-(KNa), IMA 2020-003, in: CNMNC Newsletter 55, Eur. J. Mineral., 32, https://doi.org/10.5194/ejm-32-367-2020, 2020.

IMA no. 2020-005

• Crocobelonite

• ${\mathrm{CaFe}}_{\mathrm{2}}^{\mathrm{3}+}\mathrm{O}$(PO₄)₂

• In paralavas exposed in phosphorite quarry, Daba-Siwaqa pyrometamorphic complex, Transjordan Plateau, Jordan (31^∘${\mathrm{21}}^{\prime }{\mathrm{52}}^{\prime \prime }$ N, 36^∘${\mathrm{10}}^{\prime }{\mathrm{55}}^{\prime \prime }$ E)

• Sergey N. Britvin*, Mikhail N. Murashko, Maria G. Krzhizhanovskaya, Natalia S. Vlasenko, Oleg S. Vereshchagin, Yevgeny Vapnik, and Dmitrii V. Pankin

• *E-mail: sbritvin@gmail.com

• New structure type

• Orthorhombic: Pnma; structure determined

• a=14.2757(1), b=6.3832(1), c=7.3169(1) Å

• 6.54(16), 5.12(26), 3.549(100), 3.200(50), 2.912(19), 2.869(40), 2.662(21), 2.264(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 5559/1

• How to cite: Britvin, S. N., Murashko, M. N., Krzhizhanovskaya, M. G., Vlasenko, N. S., Vereshchagin, O. S., Vapnik, Y., and Pankin, D. V.: Crocobelonite, IMA 2020-005, in: CNMNC Newsletter 55, Eur. J. Mineral., 32, https://doi.org/10.5194/ejm-32-367-2020, 2020.

IMA no. 2020-006

• Bimbowrieite

• ${\mathrm{NaMgFe}}_{\mathrm{5}}^{\mathrm{3}+}$(PO₄)₄(OH)₆•2H₂O

• White Rock No. 2 quarry, Bimbowrie Conservation Park, 24 km N of Olary, South Australia, Australia (32^∘04^′ S, 140^∘19^′ E)

• Peter Elliott and Anthony R. Kampf

• *E-mail: peter.elliott@adelaide.edu.au

• Dufrénite group

• Monoclinic: C2∕c; structure determined

• a=25.995(5), b=5.151(1), c=13.892(3) Å, β=111.61(3)^∘

• 12.3(63), 5.04(100), 3.443(96), 3.234(93), 3.919(84), 2.884(60), 2.433(61), 1.586(65)

• Type material is deposited in the mineralogical collections of the South Australian Museum, North Terrace, Adelaide, South Australia 5000, Australia, registration number G34867

• How to cite: Elliott, P. and Kampf, A. R.: Bimbowrieite, IMA 2020-006, in: CNMNC Newsletter 55, Eur. J. Mineral., 32, https://doi.org/10.5194/ejm-32-367-2020, 2020.

IMA no. 2020-007

• Plumboperloffite

• ${\mathrm{PbMn}}_{\mathrm{2}}^{\mathrm{2}+}{\mathrm{Fe}}_{\mathrm{2}}^{\mathrm{3}+}$(PO₄)₃(OH)₃

• In the dumps of the Wiperaminga Hill West Quarry, Boolcoomatta Reserve, Olary Province, South Australia, Australia (31^∘${\mathrm{57}}^{\prime }{\mathrm{42}}^{\prime \prime }$ S, 140^∘${\mathrm{27}}^{\prime }{\mathrm{34}}^{\prime \prime }$ E)

• Peter Elliott and Anthony R. Kampf

• *E-mail: peter.elliott@adelaide.edu.au

• The Pb analogue of perloffite

• Monoclinic: P2₁∕m; structure determined

• a=9.176(2), b=12.340(3), c=5.009(1) Å, β=101.01(3)^∘

• 5.105(40), 4.583(30), 3.158(100), 2.950(42), 2.738(58), 2.205(30), 1.992(29), 1.938(57)

• Type material is deposited in the mineralogical collections of the South Australian Museum, North Terrace, Adelaide, South Australia 5000, Australia, registration number G34868

• How to cite: Elliott, P. and Kampf, A. R.: Plumboperloffite, IMA 2020-007, in: CNMNC Newsletter 55, Eur. J. Mineral., 32, https://doi.org/10.5194/ejm-32-367-2020, 2020.

IMA 20-A: Discreditation of surkhobite

Proposal 20-A is accepted. Surkhobite is discredited as it is identical to perraultite which has priority.