New minerals and nomenclature modifications approved in 2018

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 corresponding author

Relationship to other minerals

Crystal system, Space group; Structure determined, yes or no

Unit-cell parameters

Strongest lines in the powder X-ray diffraction pattern

Type specimen repository and specimen number

Citation details for the mineral prior to publication of full description

Citation details concern the fact that this information will be published in the Mineralogical Magazine on a routine basis, as well as being added month by month to the Commission's web site.

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

NEW MINERAL PROPOSALS APPROVED IN JUNE 2018

IMA No. 2017-118

Jahnsite-(MnMnMg)

Mn²⁺Mn²⁺Mg₂Fe³⁺₂(PO₄)₄(OH)₂·8H₂O

Proberylo, Sapucaia, Galiléia, Minas Gerais, Brazil (18°54′3″S, 41°29′4″W)

Pietro Vignola*, Frédéric Hatert, Maxime Baijot, Nicola Rotiroti, Andrea Risplendente and Sergio Vavello

*E-mail: [email protected]

Jahnsite group

Monoclinic: P2/a; structure determined

a = 15.177(2), b = 7.176(1), c = 10.006(3) Å, β = 111.01(2)°

9.28(100), 4.945(39), 4.627(20), 3.521(43), 2.988(52), 2.842(81), 1.958(27), 1.581(27)

Type material is deposited in the mineralogical collections of the Laboratoire de Minéralogie, University of Liege, Bât. B18, Sart Tilman, B-4000 Liège, Belgium, catalogue no. 21140

How to cite: Vignola, P., Hatert, F., Baijot, M., Rotiroti, N., Risplendente, A. and Vavello, S. (2018) Jahnsite-(MnMnMg), IMA 2017-118. CNMNC Newsletter No. 44, August 2018, page 1016; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-010

Eddavidite

Pb₂Cu₁₂O₁₅Br₂

Southwest Mine, Bisbee, Warren District, Cochise Co., Arizona, USA (31°26′23″N, 109°54′56″W)

Hexiong Yang* and Robert T. Downs

*E-mail: [email protected]

The Br analogue of murdochite

Cubic: Fm $\overline 3 $m; structure determined

a = 9.2407(9) Å

5.296(40), 4.739(15), 2.668(100), 2.305(31), 2.120(13), 1.632(35), 1.394(28), 1.060(11)

Cotype material is deposited in the collections of the University of Arizona Mineral Museum, Tucson, AZ 85719, USA, catalogue # 12326, and the RRUFF Project, deposition # R050381

How to cite: Yang, H. and Downs, R.T. (2018) Eddavidite, IMA 2018-010. CNMNC Newsletter No. 44, August 2018, page 1016; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-019

Yarzhemskiite

K[B₅O₇(OH)₂]·H₂O

Chelkar salt dome (drillcore of borehole #800, depth 344–347 m), near Chelkar (Shalkar) lake, Western Kazakhstan Region, Kazakhstan

Igor V. Pekov*, Natalia V. Zubkova, Oksana V. Korotchenkova, Ilya I. Chaikovskiy, Vasiliy O. Yapaskurt, Nikita V. Chukanov, Dmitry I. Belakovskiy, Inna S. Lykova, Sergey N. Britvin and Dmitry Y. Pushcharovsky

*E-mail: [email protected]

The K analogue of larderellite

Monoclinic: P2₁/c; structure determined

a = 9.4734(2), b = 7.5203(2), c = 11.4205(2) Å, β = 97.300(2)°

9.39(86), 4.696(41), 3.296(18), 3.130(19), 2.935(42), 2.898(100), 2.832(56), 1.867(18)

Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia, registration number 5154/1

How to cite: Pekov, I.V., Zubkova, N.V., Korotchenkova, O.V., Chaikovskiy, I.I., Yapaskurt, V.O., Chukanov, N.V., Belakovskiy, D.I., Lykova, I.S., Britvin, S.N. and Pushcharovsky, D.Y. (2018) Yarzhemskiite, IMA 2018-019. CNMNC Newsletter No. 44, August 2018, page 1016; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-020

Stefanweissite

(Ca,REE)₂Zr₂(Nb,Ti)(Ti,Nb)₂Fe²⁺O₁₄

In den Dellen (Zieglowski) pumice quarry, 1.5 km NE of Mendig, Laach Lake (Laacher See) volcano, Eifel region, Rhineland-Palatinate, Germany

Nikita V. Chukanov*, Natalia V. Zubkova, Igor V. Pekov, Marina F. Vigasina, Yury S. Polekhovsky, Bernd Ternes, Willi Schüller, Sergey N. Britvin and Dmitry Y. Pushcharovsky

*E-mail: [email protected]

Closely related to nöggerathite-(Ce)

Orthorhombic: Cmca; structure determined

a = 7.2896(4), b = 14.1435(5), c = 10.1713(4) Å

2.983(100), 2.897(71), 1.828(38), 1.793(25), 1.767(16), 1.536(9), 1.517(10), 1.187(19)

Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia, registration number 5191/1

How to cite: Chukanov, N.V., Zubkova, N.V., Pekov, I.V., Vigasina, M.F., Polekhovsky, Y.S., Ternes, B., Schüller, W., Britvin, S.N. and Pushcharovsky, D.Y. (2018) Stefanweissite, IMA 2018-020. CNMNC Newsletter No. 44, August 2018, page 1016; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-021

Thermaerogenite

CuAl₂O₄

Arsenatnaya fumarole, Second scoria cone of the Northern Breakthrough of the Great Tolbachik Fissure Eruption, Tolbachik volcano, Kamchatka peninsula, Far-Eastern Region, Russia (55°41′N, 160°14′E, 1200 m asl)

Igor V. Pekov*, Fedor D. Sandalov, Natalia N. Koshlyakova, Yury S. Polekhovsky, Marina F. Vigasina, Sergey N. Britvin and Evgeny G. Sidorov

*E-mail: [email protected]

Spinel supergroup

Cubic: Fd $\overline 3 $m

a = 8.131(1) Å

2.873(65), 2.451(100), 2.033(10), 1.865(6), 1.660(16), 1.565(28), 1.438(30), 1.240(6)

Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia, registration number 5192/1

How to cite: Pekov, I.V., Sandalov, F.D., Koshlyakova, N.N., Polekhovsky, Y.S., Vigasina, M.F., Britvin, S.N. and Sidorov, E.G. (2018) Thermaerogenite, IMA 2018-021. CNMNC Newsletter No. 44, August 2018, page 1017; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-022

Picaite

NaCa[AsO₃OH][AsO₂(OH)₂]

Torrecillas mine, Salar Grande, Iquique Province, Tarapacá Region, Chile (20°58′13″S, 70°8′17″W)

Anthony R. Kampf*, Barbara Nash, Maurizio Dini and Arturo A. Molina Donoso

*E-mail: [email protected]

New structure type

Monoclinic: P2₁/c; structure determined

a = 7.2474(4), b = 14.6547(7), c = 7.2624(5) Å, β = 99.520(7)°

4.45(74), 3.651(100), 3.473(100), 3.383(48), 2.893(28), 1.802(27), 1.621(27), 1.558(24)

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 67257 and 67285

How to cite: Kampf, A.R., Nash, B., Dini, M. and Molina Donoso, A.A. (2018) Picaite, IMA 2018-022. CNMNC Newsletter No. 44, August 2018, page 1017; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-023

Ríosecoite

Ca₂Mg(AsO₃OH)₃(H₂O)₂

Torrecillas mine, Salar Grande, Iquique Province, Tarapacá Region, Chile (20°58′13″S, 70°8′17″W)

Anthony R. Kampf*, Barbara Nash, Maurizio Dini and Arturo A. Molina Donoso

*E-mail: [email protected]

New structure type

Triclinic: P $\overline 1 $; structure determined

a = 6.8110(9), b = 7.316(1), c = 11.777(2) Å, α = 83.466(6), β = 84.394(6), γ = 79.779(6)°

7.18(36), 4.239(35), 3.578(100), 3.361(41), 3.142(43), 3.006(48), 2.914(28), 2.784(71)

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 67257

How to cite: Kampf, A.R., Nash, B., Dini, M. and Molina Donoso, A.A. (2018) Ríosecoite, IMA 2018-023. CNMNC Newsletter No. 44, August 2018, page 1017; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-024

Pandoraite-Ba

BaV⁴⁺₅V⁵⁺₂O₁₆·3H₂O

Pandora mine, La Sal district (Paradox Valley district), San Juan Co., Colorado, USA (38°18′34″N, 109°13′13″W)

Anthony R. Kampf*, John M. Hughes, Barbara P. Nash and Joe Marty

*E-mail: [email protected]

Known synthetic analogue

Monoclinic: P2; structure determined

a = 6.154(2), b = 6.153(2), c = 21.356(7) Å, β = 90.058(9)°

10.9(100), 5.41(12), 3.631(18), 2.812(19), 2.739(20), 2.559(26), 2.176(13), 1.934(20)

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 67293 and 67294

How to cite: Kampf, A.R., Hughes, J.M., Nash, B.P. and Marty, J. (2018) Pandoraite-Ba, IMA 2018-024. CNMNC Newsletter No. 44, August 2018, page 1017; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-025

Camanchacaite

NaCaMg₂[AsO₄][AsO₃(OH)]₂

Torrecillas mine, Salar Grande, Iquique Province, Tarapacá Region, Chile (20°58′13″S, 70°8′17″W)

Anthony R. Kampf*, Barbara Nash, Maurizio Dini and Arturo A. Molina Donoso

*E-mail: [email protected]

Alluaudite group

Monoclinic: C2/c

a = 12.470(9), b = 12.554(9), c = 6.848(9) Å, β = 113.75(2)°

6.27(40), 4.134(66), 3.263(93), 3.115(60), 2.806(96), 2.735(100), 1.952(39), 1.689(49)

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 67257, 66771, 66772, 66773 and 66774

How to cite: Kampf, A.R., Nash, B., Dini, M. and Molina Donoso, A.A. (2018) Camanchacaite, IMA 2018-025. CNMNC Newsletter No. 44, August 2018, page 1018; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-027

Hitachiite

Pb₅Bi₂Te₂S₆

Fudotaki deposit, Hitachi mine, Hitachi, Ibaraki, Japan (36°37′16.03″N, 140°36′46.50″E)

Takahiro Kuribayashi*, Toshiro Nagase, Tatsuo Nozaki, Junichiro Ishibashi, Kazuhiko Shimada, Masaaki Shimizu and Koichi Momma

*E-mail: [email protected]

Tetradymite group

Trigonal: P $\overline 3 $m1

a = 4.220(1), c = 27.02(4) Å

3.541(35), 3.391(59), 3.039(100), 2.177(14), 2.114(56), 2.040(11), 1.793(18), 1.735(18)

Type material is deposited in the mineralogical collections of the National Museum of Nature and Science, Tokyo, Japan, registration number NSM-M45821

How to cite: Kuribayashi, T., Nagase, T., Nozaki, T., Ishibashi, J., Shimada, K., Shimizu, M. and Momma, K. (2018) Hitachiite, IMA 2018-027. CNMNC Newsletter No. 44, August 2018, page 1018; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-028

Lepageite

Mn²⁺₃(Fe³⁺₇Fe²⁺₄)O₃[Sb³⁺₅As³⁺₈O₃₄]

Szklary pegmatite, ca. 6 km N of the Ząbkowice Śląskie town, ca. 60 km S of Wrocław, Lower Silesia, Poland (50°39′04″N, 16°49′56″E)

Adam Pieczka*, Mark A. Cooper and Frank C. Hawthorne

*E-mail: [email protected]

New structure type

Triclinic: P $\overline 1 $; structure determined

a = 10.607(3), b = 10.442(3), c = 15.260(5) Å, α = 89.58(1), β = 104.479(8), γ = 89.706(9)°

2.898(85), 2.854(92), 2.846(88), 2.831(100), 2.487(34), 2.474(34), 2.463(34), 1.728(24)

Type material is deposited in the collections of the Mineralogical Museum, University of Wrocław, Cybulskiego 30, 50–205 Wrocław, Poland, catalogue number MMWr IV7926

How to cite: Pieczka, A., Cooper, M.A. and Hawthorne, F.C. (2018) Lepageite, IMA 2018-028. CNMNC Newsletter No. 44, August 2018, page 1018; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2017-067a

Wumuite

KAl_0.33W_2.67O₉

Nanyang Village, Huaping Co., Panzhihua-Xichang region, China (101°27'13.86”E, 26°46'8.21”N)

Guowu Li* and Yuan Xue

*E-mail: [email protected]

Known synthetic analogue

Hexagonal: P6/mmm; structure determined

a = 7.2952(5), c = 3.7711(3) Å

6.261(36), 3.727(30), 2.610(10), 3.161(100), 2.413(40), 1.881(10), 1.820(15), 1.577(15)

Type material is deposited in the mineralogical collections of the Geological Museum of China, 15 Xisi Mutton Alley, Beijing, China, registration No. M13782 (holotype), and the Crystal Structure Laboratory, China University of Geosciences, Beijing 100083, China, catalogue No. NY-6-2Z (cotype)

How to cite: Li, G. and Xue, Y. (2018) Wumuite, IMA 2017-067a. CNMNC Newsletter No. 44, August 2018, page 1018; Mineralogical Magazine, 82, 1015–1021.

NEW MINERAL PROPOSALS APPROVED IN JULY 2018

IMA No. 2018-017

Jahnsite-(NaMnMg)

(Na,Ca)(Mn²⁺,Fe³⁺)(Mg,Fe³⁺)₂Fe³⁺₂(PO₄)₄(OH)₂ (H₂O)₈

Sapucaia pegmatite, Conselheiro Pena district, Minas Gerais, Brazil (18°54′38″S, 41°29′61″W) – type locality; White Rock No. 2 quarry, Bimbowrie Conservation Park, 24 km N of Olary, South Australia, Australia (140°19′E, 32°4′S) – cotype locality

Anthony R. Kampf*, Peter Elliott, Barbara P. Nash, Luigi Chiappino and Sergio Varvello

*E-mail: [email protected]

Jahnsite group

Monoclinic: P2/a; structure determined

a = 15.104(1), b = 7.1629(2), c = 9.8949(7) Å, β = 110.640(7)°

9.29(100), 5.02(27), 4.91(30), 3.546(32), 2.975(26), 2.834(91), 2.601(33), 1.944(33)

Type material is deposited in the collections of the Mineral Sciences Department, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, California 90007, USA, catalogue number 66701 (Sapucaia), and the South Australian Museum, North Terrace, Adelaide, South Australia, Australia, registration number G34298 (White Rock)

How to cite: Kampf, A.R., Elliott, P., Nash, B.P., Chiappino, L. and Varvello, S. (2018) Jahnsite-(NaMnMg), IMA 2018-017. CNMNC Newsletter No. 44, August 2018, page 1019; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-029

Hg²⁺₃[NHg²⁺₂]₁₈(Cl,I,OH,Br,S)₂₄

Clear Creek mine, New Idria mining district, San Benito Co., California, USA (120°43′58″W, 36°22′59″N)

Mark A. Cooper, Frank C. Hawthorne*, Andrew C. Roberts, Christopher J. Stanley, John Spratt and Andrew G. Christy

*E-mail: [email protected]

Loosely chemically related to comancheite

Orthorhombic: Amam; structure determined

a = 26.381(6), b = 45.59(1), c = 6.684(1) Å

5.965(40), 5.717(50), 5.018(40), 2.853(100), 2.776(100), 2.745(100), 2.690(35), 1.673(40)

Type material is deposited in the mineralogical collections of the Department of Natural History, Royal Ontario Museum, 100 Queens Park, Toronto, Ontario M5S 2C6, Canada, catalogue number M58523

How to cite: Cooper, M.A., Hawthorne, F.C., Roberts, A.C., Stanley, C.J., Spratt, J. and Christy, A.G. (2018) IMA 2018-029. CNMNC Newsletter No. 44, August 2018, page 1019; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-031

Pliniusite

Ca₅(VO₄)₃F

Southern fumarole field, Mountain 1004, Tolbachik volcano, Kamchatka peninsula, Far-Eastern Region, Russia (holotype); Nahal Morag canyon, Hatrurim Basin, Israel (cotype)

Igor V. Pekov*, Natalia V. Zubkova, Natalia N. Koshlyakova, Arkadiusz Krzątała, Dmitry I. Belakovskiy, Irina O. Galuskina, Evgeny V. Galuskin, Sergey N. Britvin, Evgeny G. Sidorov, Yevgeny Vapnik and Dmitry Y. Pushcharovsky

*E-mail: [email protected]

Apatite supergroup

Hexagonal: P6₃/m; structure determined

a = 9.5777(7), c = 6.9659(5) Å

3.958(27), 3.488(33), 2.869(100), 2.823(35), 2.776(58), 2.674(25), 1.980(19), 1.871(23)

Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia, registration numbers 5202/1 (Tolbachik) and 5202/2 (Nahal Morag)

How to cite: Pekov, I.V., Zubkova, N.V., Koshlyakova, N.N., Krzątała, A., Belakovskiy, D.I., Galuskina, I.O., Galuskin, E.V., Britvin, S.N., Sidorov, E.G., Vapnik, Y. and Pushcharovsky, D.Y. (2018) Pliniusite, IMA 2018-031. CNMNC Newsletter No. 44, August 2018, page 1019; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-034

Goldschmidtite

KNbO₃

As inclusion in a diamond from the Koffiefontein kimberlite pipe, South Africa (29°24.9′S, 24°59.5′E)

Nicole A. Meyer*, Michelle D. Wenz, James P.S. Walsh, Steven D. Jacobsen, Andrew J. Locock and Jeffrey W. Harris

*E-mail: [email protected]

The K analogue of isolueshite

Cubic: Pm $\overline 3 $m

a = 3.9875(1) Å

2.820(100), 1.994(50), 1.628(58), 1.410(36), 1.261(28), 1.066(38), 0.892(30), 0.814(43)

Type material is deposited in the mineralogical collections of the Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada, accession number M58208

How to cite: Meyer, N.A., Wenz, M.D., Walsh, J.P.S., Jacobsen, S.D., Locock, A.J. and Harris, J.W. (2018) Goldschmidtite, IMA 2018-034. CNMNC Newsletter No. 44, August 2018, page 1020; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-035

Mengeite

Ba(Mg,Mn²⁺)Mn³⁺₄(PO₄)₄(OH)₄·4H₂O

Spring Creek copper mine, 10 km S of Wilmington, South Australia, Australia

Peter Elliott*

*E-mail: [email protected]

Structurally related to bermanite and ercitite

Triclinic: P $\overline 1 $; structure determined

a = 5.426(1), b = 5.427(1), c = 16.387(3) Å, α = 87.63(3), β = 99.08(3), γ = 110.63(3)°

16.126(100), 5.106(12), 4.418(44), 3.246(14), 3.191(9), 3.145(12), 2.796(25), 2.680(12)

Type material is deposited in the mineralogical collections of the South Australian Museum, North Terrace, Adelaide, South Australia 5000, Australia, registration number G34744

How to cite: Elliott, P. (2018) Mengeite, IMA 2018-035. CNMNC Newsletter No. 44, August 2018, page 1020; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-036

Pandoraite-Ca

CaV⁴⁺₅V⁵⁺₂O₁₆·3H₂O

Pandora mine, La Sal district (Paradox Valley district), San Juan Co., Colorado, USA (38°18′34″N, 109°13′13″W)

Anthony R. Kampf*, John M. Hughes, Barbara P. Nash and Joe Marty

*E-mail: [email protected]

Isostructural with pandoraite-Ba (IMA 2018-024; this newsletter)

Monoclinic: P2

a = 6.1119(8), b = 6.105(8), c = 21.460(9) Å, β = 90.1(1)°

11.07(100), 4.055(12), 3.629(11), 3.084(16), 2.831(14), 2.745(22), 2.564(23), 1.940(25)

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 67287

How to cite: Kampf, A.R., Hughes, J.M., Nash, B.P. and Marty, J. (2018) Pandoraite-Ca, IMA 2018-036. CNMNC Newsletter No. 44, August 2018, page 1020; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-037

Zinconigerite-2N1S

ZnSn₂Al₁₂O₂₂(OH)₂

Xianghualing skarn, Linwu County, Hunan Province, China (112°34′E, 25°26′N)

Can Rao*, Rucheng Wang, Xiangping Gu, Qunke Xia, Chuanwan Dong, Frédéric Hatert, Xuege Yu and Wumengyu Wang

*E-mail: [email protected]

Nigerite group

Trigonal: P $\overline 3 $m1

a = 5.714(1), c = 13.821(3) Å

2.841(74), 2.431(100), 1.851(25), 1.834(34), 1.646(74), 1.545(81), 1.428(32), 1.417(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 M13810

How to cite: Rao, C., Wang, R., Gu, X., Xia, Q., Dong, C., Hatert, F., Yu, X. and Wang, W. (2018) Zinconigerite-2N1S, IMA 2018-037. CNMNC Newsletter No. 44, August 2018, page 1020; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-038

Proxidecagonite

Al₃₄Ni₉Fe₂

In a fragment of the Khatyrka meteorite, Koryak Mountains, Russia

Luca Bindi* and Paul J. Steinhard

*E-mail: [email protected]

New structure type

Orthorhombic: Pnma; structure determined

a = 29.013(3), b = 8.156(1), c = 12.401(2) Å

3.96(50), 3.80(40), 3.403(40), 2.069(50), 2.045(100), 2.036(30), 2.033(50), 2.024(70)

Type material is deposited in the mineralogical collections of the Museo di Storia Naturale – Sezione di Mineralogia e Litologia, Università di Firenze, Via La Pira 4, I-50121 Firenze, Italy, catalogue number 3291/I

How to cite: Bindi, L. and Steinhard, P.J. (2018) Proxidecagonite, IMA 2018-038. CNMNC Newsletter No. 44, August 2018, page 1020; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-039

Meyrowitzite

Ca(UO₂)(CO₃)₂·5H₂O

Markey mine, Red Canyon, White Canyon District, San Juan Co., Utah, USA (37°32′57″, 110°18′08″W)

Anthony R. Kampf*, Jakub Plášil, Travis Olds, Barbara P. Nash and Joe Marty

*E-mail: [email protected]

A dimorph of zellerite

Monoclinic: P2₁/n; structure determined

a = 12.376(3), b = 16.087(1), c = 20.134(2) Å, β = 107.68(1)°

12.11(100), 9.52(48), 8.19(59), 5.96(68), 5.04(79), 4.359(45), 4.057(32), 3.944(31)

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 66789 and 66790

How to cite: Kampf, A.R., Plášil, J., Olds, T., Nash, B.P. and Marty, J. (2018) Meyrowitzite, IMA 2018-039. CNMNC Newsletter No. 44, August 2018, page 1021; Mineralogical Magazine, 82, 1015–1021.

IMA No. 2018-040

Cerromojonite

CuPbBiSe₃

El Dragón mine, Quijarro province, 30 km SW of Potosí, Bolivia (19°49′23.90″S, 65°55′00.60″W, 4160 m a.s.l.)

Hans-Jürgen Förster*, Luca Bindi, Günter Grundmann and Christopher J. Stanley

*E-mail: [email protected]

The Se analogue of součekite

Monoclinic: Pn2₁m; structure determined

a = 8.202(1), b = 8.741(1), c = 8.029(1) Å

4.00(20), 3.86(25), 2.783(100), 2.727(55), 2.608(40), 1.999(25), 1.992(20), 1.788(20)

Type material is deposited in the mineralogical collections of the Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom, catalogue number BM 2018,11 (polished section), and the Mineralogical State Collection – Museum Reich der Kristalle, Theresienstraße 41, 80333 München, Germany, inventory number MSM 73583 (cotype)

How to cite: Förster, H.-J., Bindi, L., Grundmann, G. and Stanley, C.J. (2018) Cerromojonite, IMA 2018-040. CNMNC Newsletter No. 44, August 2018, page 1021; Mineralogical Magazine, 82, 1015–1021.

NOMENCLATURE PROPOSALS APPROVED IN JULY 2018

Alluaudite supergroup

A new classification and nomenclature scheme has been approved for the minerals of the alluaudite supergroup. The supergroup is divided into the alluaudite group, the wyllieite group, and the bobfergusonite group.

Discreditation of fupingqiuite

As a side effect of the new classification of alluaudites, the mineral fupingqiuite (IMA 2016-087; see CNMNC Newsletter 35) is not a separate species from varulite and has been discredited.

ERRATUM

The file on jahnsite-(NaMnMg) published in Newsletter 43 was wrong. The correct one is included in this Newsletter.