CNMNC Newsletter 42 und 43, April - Mai 2018

[Stefan]

NEWSLETTER 42 März 2018

IMA No. 2017-094
Ammoniolasalite
(NH4)2Mg2(H2O)20] [V10O28]
Burro mine, Slick Rock district, San Miguel Co., Colorado, USA (38°2’42”N, 108°53’23”W)
Anthony R. Kampf*, Barbara P. Nash, Paul M. Adams, Joe Marty and John M. Hughes
*E-mail: akampf@nhm.org
The ammonium analogue of lasalite
Monoclinic: C2/c; structure determined
a = 24.478(3), b = 10.9413(4), c = 17.551(1) Å, β = 119.257(7)°
10.64(24), 9.43(100), 8.57(21), 7.62(26), 6.80(32), 2.891(13), 2.725(23), 2.125(13)
Cotype material is deposited in the mineralogical collections of the Natural History Museum of Los Angeles County, 900 Exposition Blvd, Los Angeles, California, USA, catalogue numbers 67477, 67478, 67479, 67480 and 67481
How to cite: Kampf, A.R., Nash, B.P., Adams, P.M., Marty, J. and Hughes, J.M. (2018) Ammoniolasalite, IMA 2017-094. CNMNC Newsletter No. 42, April 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.


IMA No. 2017-099
Ferrierite-NH4
(NH4,Mg0.5)5(Al5Si31O72)·22H2O
Libous lignite quarry, near Chomutov, Ústí Region, Bohemia, Czech Republic
Nikita V. Chukanov*, Igor V. Pekov, Dmitriy I. Belakovskiy and Sergey N. Britvin
*E-mail: nikchukanov@yandex.ru
Zeolite supergroup
Orthorhombic: Immm
a = 19.10(1), b = 14.15(1), c = 7.489(3) Å
9.52(97), 6.95(28), 6.60(19), 3.988(61), 3.784(19), 3.547(73), 3.482(100), 3.143(37)
Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia, registration number 5120/1
How to cite: Chukanov, N.V., Pekov, I.V., Belakovskiy, D.I. and Britvin, S.N. (2018) Ferrierite-NH4, IMA 2017-099. CNMNC Newsletter No. 42, April 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.


IMA No. 2017-100
Nollmotzite
Mg[U5+(U6+O2)2O4F3]·4H2O
Clara mine, Black Forest Mountains, Baden-Württemberg, Germany (48°22’59”N, 8°14’47”E)
Jakub Plášil*, Anthony R. Kampf, Radek Škoda and Jiří Čejka
*E-mail: plasil@fzu.cz
New structure type
Monoclinic: Cm; structure determined
a = 7.1122(4), b = 11.7733(7), c = 8.2075(4) Å, β = 98.623(4)°
8.10(100), 4.060(31), 3.518(30), 3.420(54), 3.237(22), 3.083(26), 2.710(17), 2.015(32)
Cotype material is deposited in the mineralogical collections of the Natural History Museum of
Los Angeles County, 900 Exposition Blvd, Los Angeles, California, USA, catalogue numbers
66647, 66648 and 66649
How to cite: Plášil, J., Kampf, A.R., Škoda, R. and Čejka, J. (2018) Nollmotzite, IMA 2017-100.
CNMNC Newsletter No. 42, April 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.


IMA No. 2017-101
Dellagiustaite
V2+Al2O4
Sierra de Comechingones, San Luis, Argentina
Fernando Cámara*, Renato Pagano, Adriana Pagano and Luca Bindi
*E-mail: fernando.camara@unimi.it
Spinel supergroup
Cubic: Fd3m; structure determined
a = 8.1950(1) Å
2.469(19), 2.047(58), 1.576(38), 1.447(100), 1.182(27), 1.023(87), 0.915(21), 0.836(35)
Type material is deposited in the mineralogical collections of the Museo delle Collezioni di
Mineralogia, Gemmologia, Petrologia e Giacimentologia, Dipartimento di Scienze della Terra “A.
Desio”, Università di Milano, catalogue number MCMGPG-H2017-001
How to cite: Cámara, F., Pagano, R., Pagano, A. and Bindi, L. (2018) Dellagiustaite, IMA 2017-
101. CNMNC Newsletter No. 42, April 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.


IMA No. 2017-102
Potassic-richterite
K(NaCa)Mg5Si8O22(OH)2
Stora Pajsberg mine, Filipstad, Värmland, Sweden (59°47.04’N, 14°19.03’E); or Harstigen mine,
Filipstad, Värmland, Sweden (59°47.10’N, 14°18.84’E)
Dan Holtstam*, Fernando Cámara, Henrik Skogby and Andreas Karlsson
*E-mail: dan.holtstam@nrm.se
Amphibole supergroup
Monoclinic: C2/m; structure determined
a = 9.9977(3), b =18.0409(4), c = 5.2794(2) Å, β = 104.465(4)°
8.55(36), 3.303(56), 3.181(100), 2.847(50), 2.714(37), 2.173(25), 1.668(27), 1.456(32)
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 NRM19311387
How to cite: Holtstam, D., Cámara, F., Skogby, H. and Karlsson, A. (2018) Potassic-richterite,
IMA 2017-102. CNMNC Newsletter No. 42, April 2018, page xxx; Mineralogical Magazine, 82,
xxx-xxx.


IMA No. 2017-103
Magnesiofluckite
CaMg(AsO3OH)2(H2O)2
Torrecillas mine, Salar Grande, Iquique Province, Tarapacá Region, Chile (20°58’13”S,
70°8’17”W)
Anthony R. Kampf*, Barbara P. Nash, Maurizio Dini and Arturo A. Molina Donoso
*E-mail: akampf@nhm.org
The Mg analogue of fluckite
Triclinic: P1; structure determined
a = 8.4143(6), b = 7.5321(5), c = 6.8917(4) Å, α = 82.477(6), β = 97.682(6), γ = 95.379(6)°
7.46(78), 4.92(43), 4.191(45), 3.511(100), 3.248(81), 2.953(62), 2.796(51), 2.679(75)
Type material is deposited in the mineralogical collections of the Natural History Museum of Los Angeles County, 900 Exposition Blvd, Los Angeles, California, USA, catalogue number 67257
How to cite: Kampf, A.R., Nash, B.P., Dini, M. and Molina Donoso, A.A. (2018) Magnesiofluckite, IMA 2017-103. CNMNC Newsletter No. 42, April 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

IMA No. 2017-084
Lasnierite
(Ca,Sr)(Mg,Fe2+)2Al(P[O,F]4)3
Mount Ibity, ca. 30 km NNE of Soavina, Ambatofinandrahana district, and 10 km SW of Manandona, Antsirabé 2 District, Vakinankaratra Region, Antananarivo Province, Madagascar
Benjamin Rondeau*, Bertrand Devouard, Damien Jacob, Pascal Roussel, Nicolas Stéphant, Constance Boulet, Valentin Mollé, Marianna Corre, Emmanuel Fritsch, Cristiano Ferraris and Gian Carlo Parodi
*E-mail: benjamin.rondeau@univ-nantes.fr
New structure type
Orthorhombic: Pbcn; structure determined
a = 6.2771(3), b = 17.684(3), c = 8.1631(4) Å
4.421(83), 3.802(63), 3.706(100), 3.305(99), 2.890(90), 2.781(69), 2.772(67), 2.601(97)
Type material is deposited in the mineralogical collections of the Muséum National d’Histoire Naturelle (MNHN), 61 rue Buffon, 75005 Paris, France, registration number MNHN 217.001
How to cite: Rondeau, B., Devouard, B., Jacob, D., Roussel, P., Stéphant, N., Boulet, C., Mollé, V., Corre, M., Fritsch, E., Ferraris, C. and Parodi, G.C. (2018) Lasnierite, IMA 2017-084. CNMNC Newsletter No. 42, April 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.


IMA No. 2017-104
Vandermeerscheite
K2[(UO2)2V2O8]·2H2O
Schellkopf, Brenk, Eifel, Rhineland-Palatinate, Germany
Jakub Plášil*, Anthony R. Kampf, Radek Škoda and Jiří Čejka
*E-mail: plasil@fzu.cz
Chemically close to carnotite
Monoclinic: P21/n; structure determined
a = 8.292(2), b = 8.251(3), c = 10.188(3) Å, β = 110.84(4)°
7.49(100), 4.147(22), 3.738(32), 3.616(20), 3.254(31), 3.132(21), 2.989(41), 2.091(13)
Cotype material is deposited in the mineralogical collections of the Natural History Museum of Los Angeles County, 900 Exposition Blvd, Los Angeles, California, USA, catalogue numbers 67260, 67261 and 67262
How to cite: Plášil, J., Kampf, A.R., Škoda, R. and Čejka, J. (2018) Vandermeerscheite, IMA 2017-104. CNMNC Newsletter No. 42, April 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.


IMA No. 2017-105
Khrenovite
Na3Fe3+2(AsO4)3
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)5
Igor V. Pekov*, Natalia N. Koshlyakova, Dmitry I. Belakovskiy, Marina F. Vigasina, Natalia V.
Zubkova, Atali A. Agakhanov, Sergey N. Britvin, Evgeny G. Sidorov and Dmitry Y.
Pushcharovsky
*E-mail: igorpekov@mail.ru
Alluaudite group
Monoclinic: C2/c; structure determined
a = 12.2394(7), b = 12.7967(5), c = 6.6589(4) Å, β = 112.953 (7)°
6.40(48), 5.639(48), 3.582(41), 3.198(62), 2.939(33), 2.824(60), 2.785(100), 2.612(33)
Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian
Academy of Sciences, Moscow, Russia, registration number 5028/1
How to cite: Pekov, I.V., Koshlyakova, N.N., Belakovskiy, D.I., Vigasina, M.F., Zubkova, N.V.,
Agakhanov, A.A., Britvin, S.N., Sidorov, E.G. and Pushcharovsky, D.Y. (2018) Khrenovite, IMA
2017-105. CNMNC Newsletter No. 42, April 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.


IMA No. 2017-106
Chinchorroite
Na2Mg5(As2O7)2(AsO3OH)2(H2O)10
Torrecillas mine, Salar Grande, Iquique Province, Tarapacá Region, Chile (20°58’13”S,
70°8’17”W)
Anthony R. Kampf*, Barbara P. Nash, Maurizio Dini and Arturo A. Molina Donoso
*E-mail: akampf@nhm.org
New structure type
Triclinic: P1; structure determined
a = 8.7777(2), b = 8.8570(3), c = 9.7981(7) Å, α = 91.097(6), β = 110.544(8), γ = 103.167(7)°
9.10(100), 8.63(54), 5.25(32), 4.034(49), 3.521(35), 3.036(53), 2.811(42), 2.568(36)
Type material is deposited in the mineralogical collections of the Natural History Museum of Los
Angeles County, 900 Exposition Blvd, Los Angeles, California, USA, catalogue number 67257
How to cite: Kampf, A.R., Nash, B.P., Dini, M. and Molina Donoso, A.A. (2018) Chinchorroite,
IMA 2017-106. CNMNC Newsletter No. 42, April 2018, page xxx; Mineralogical Magazine, 82,
xxx-xxx.


IMA No. 2017-107
Nöggerathite-(Ce)
(Ce,Ca)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, Sergey N. Britvin, Igor V. Pekov, Marina F. Vigasina,
Christof Schäfer, Bernd Ternes, Willi Schüller, Vera N. Ermolaeva and Dmitry Y. Pushcharovsky
*E-mail: chukanov@icp.ac.ru
Isostructural with zirconolite
Orthorhombic: Cmca; structure determined
a = 7.2985(3), b = 14.1454(4), c = 10.1607(4) Å
3.689(10), 2.963(91), 2.903(100), 2.540(39), 1.823(15), 1.796(51), 1.543(20), 1.519(16)
Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian
Academy of Sciences, Moscow, Russia, registration number 5123/1
How to cite: Chukanov, N.V., Zubkova, N.V., Britvin, S.N., Pekov, I.V., Vigasina, M.F., Schäfer,
C., Ternes, B., Schüller, W., Ermolaeva, V.N. and Pushcharovsky, D.Y. (2018) Nöggerathite-(Ce),
IMA 2017-107. CNMNC Newsletter No. 42, April 2018, page xxx; Mineralogical Magazine, 82,
xxx-xxx.


IMA No. 2017-108
Rhabdoborite-(V)
Mg12(V5+,Mo6+,W6+)1.5O6{[BO3]6-x[(P,As)O4]xF2-x} (x < 1)
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*, Natalia V. Zubkova, Natalia N. Koshlyakova, Dmitry I. Belakovskiy, Marina F. Vigasina, Atali A. Agakhanov, Sergey N. Britvin, Evgeny G. Sidorov and Dmitry Y. Pushcharovsky
*E-mail: igorpekov@mail.ru
Isostructural with rhabdoborite-(W) (IMA No. 2017-109)
Hexagonal: P63; structure determined
a = 10.6314(4), c = 4.5661(2) Å
9.17(100), 5.301(44), 3.472(76), 2.763(64), 2.547(61), 2.226(79), 1.701(63), 1.474(31)
Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia, registration number 5125/1
How to cite: Pekov, I.V., Zubkova, N.V., Koshlyakova, N.N., Belakovskiy, D.I., Vigasina, M.F., Agakhanov, A.A., Britvin, S.N., Sidorov, E.G. and Pushcharovsky, D.Y. (2018) Rhabdoborite-(V), IMA 2017-108. CNMNC Newsletter No. 42, April 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.


IMA No. 2017-109
Rhabdoborite-(W)
Mg12(W6+,V5+)1.5O6{[BO3]6–x[(P,As)O4]xF2–x} (x < 1)
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*, Natalia V. Zubkova, Natalia N. Koshlyakova, Dmitry I. Belakovskiy, Marina F. Vigasina, Atali A. Agakhanov, Sergey N. Britvin, Evgeny G. Sidorov and Dmitry Y. Pushcharovsky
*E-mail: igorpekov@mail.ru
Isostructural with rhabdoborite-(V) (IMA No. 2017-108)
Hexagonal: P63; structure determined
a = 10.6366(5), c = 4.5701(3) Å
9.18(100), 5.304(38), 4.595(25), 3.479(61), 2.766(29), 2.550(30), 2.228(35), 1.703(25)
Type material is deposited in the collections of the the Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia, registration number 5126/1
How to cite: Pekov, I.V., Zubkova, N.V., Koshlyakova, N.N., Belakovskiy, D.I., Vigasina, M.F., Agakhanov, A.A., Britvin, S.N., Sidorov, E.G. and Pushcharovsky, D.Y. (2018) Rhabdoborite-(W), IMA 2017-109. CNMNC Newsletter No. 42, April 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.


IMA No. 2017-110
Pararaisaite
CuMg[Te6+O4(OH)2]·6H2O
North Star mine, Mammoth, Tintic district, Juab Co., Utah, USA (39°55’14”N, 112°6’28”W)
Anthony R. Kampf*, Robert M. Housley and George R. Rossman
*E-mail: akampf@nhm.org
A dimorph of raisaite
Monoclinic: P21/c; structure determined
a = 9.6838(5), b = 5.7517(2), c = 17.634(1) Å, β = 90.553(6)°
8.77(100), 4.824(71), 4.392(43), 4.248(85), 2.733(39), 2.419(50), 1.893(48), 1.753(29)
Type material is deposited in the mineralogical collections of the Natural History Museum of Los
Angeles County, 900 Exposition Blvd, Los Angeles, California, USA, catalogue number 67272
How to cite: Kampf, A.R., Housley, R.M. and Rossman, G.R. (2018) Pararaisaite, IMA 2017-110.
CNMNC Newsletter No. 42, April 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.


IMA No. 2017-111
Thalhammerite
Pd9Ag2Bi2S4
Komsomolsky mine, Talnakh deposit, Noril’sk region, Russia (69°30’20”N, 88°27’17”E)
Anna Vymazalová*, František Laufek, Sergei F. Sluzhenikin, Vladimir V. Kozlov, Chris J.
Stanley, Jakub Plášil, Federica Zaccarini, Giorgio Garuti and Ronald Bakker
*E-mail: anna.vymazalova@geology.cz
Known synthetic analogue
Tetragonal: I4/mmm; structure determined
a = 8.0266(2), c =9.1531(2) Å
3.343(24), 2.839(46), 2.412(100), 2.324(61), 2.287(48), 2.220(29), 2.007(40), 1.508(30)
Type material is deposited in the mineralogical collections of the Natural History Museum,
Cromwell Road, SW7 5BD London, UK, catalogue No. BM2017,16
How to cite: Vymazalová, A., Laufek, F., Sluzhenikin, S.F., Kozlov, V.V., Stanley, C.J., Plášil, J.,
Zaccarini, F., Garuti, G. and Bakker, R. (2018) Thalhammerite, IMA 2017-111. CNMNC
Newsletter No. 42, April 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.


IMA No. 2017-112
Mitrofanovite
Pt3Te4
East Chuarvy, Fedorovo-Pana intrusion, Kola Peninsula, Russia (67°24’30”N, 36°03’00”E)
Viktor V. Subbotin, Anna Vymazalová*, František Laufek, Yevgeny E. Savchenko, Chris J.
Stanley, Dmitriy A. Gabov and Jakub Plášil
*E-mail: anna.vymazalova@geology.cz
Structurally and chemically related to moncheite
Trigonal: R3m; structure determined
a = 3.9875(1), c =35.362(7) Å
11.79(23), 5.891(100), 3.928(11), 2.851(26), 2.137(16), 2.039(18), 1.574(24), 1.310(21)
Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian
Academy of Sciences, Moscow, Russia, registration number 5141/1
How to cite: Subbotin, V.V., Vymazalová, A., Laufek, F., Savchenko, Y.E., Stanley, C.J., Gabov,
D.A. and Plášil, J. (2018) Mitrofanovite, IMA 2017-112. CNMNC Newsletter No. 42, April 2018,
page xxx; Mineralogical Magazine, 82, xxx-xxx.


IMA No. 2017-113
Jahnsite-(MnMnZn)
Mn2+Mn2+Zn2Fe3+
2(PO4)4(OH)2·8H2O
Herdade dos Pendões mine, ca. 5 km N of the village of Odemira, Beja district, Portugal
(37°38’33”N, 8°37’52”W)
Anthony R. Kampf*, Pedro Alves, Anatoly Kasatkin and Radek Škoda
*E-mail: akampf@nhm.org
Jahnsite group
Monoclinic: P2/a
a = 15.222(6), b = 7.187(6), c = 10.028(5) Å, β = 111.746(16)°
9.25(63), 5.00(40), 4.648(33), 3.509(41), 2.842(100), 1.998(37), 1.951(30), 1.585(33)
Type material is deposited in the mineralogical collections of the Natural History Museum of Los Angeles County, 900 Exposition Blvd, Los Angeles, California, USA, catalogue number 67277
How to cite: Kampf, A.R., Alves, P., Kasatkin, A. and Škoda, R. (2018) Jahnsite-(MnMnZn), IMA 2017-113. CNMNC Newsletter No. 42, April 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.


IMA No. 2017-078a
Kaitianite
Ti3+2Ti4+O5
Allende CV3 meteorite, fell at Pueblito de Allende, Chihuahua, Mexico
Ma, C.*
*E-mail: chi@gps.caltech.edu
The Ti analogue of oxyvanite
Monoclinic: C2/c
a = 10.115, b = 5.074, c = 7.182 Å, β = 112.0°
4.689(53), 3.377(75), 2.931(73), 2.662(100), 2.466(59), 1.737(66), 1.671(67), 1.451(52)
Type material is deposited in the mineralogical collections of the National Museum of Natural History, Smithsonian Institution, Washington, DC, USA, section UNSM 3510-5
How to cite: Ma, C. (2017) Kaitianite, IMA 2017-078. CNMNC Newsletter No. 42, April 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

NOMENCLATURE PROPOSALS APPROVED IN MARCH 2018

IMA 17-H: Spinel supergroup
Proposal 17-H on the classification of the spinel supergroup is accepted. The fifty-three minerals of the spinel supergroup are divided into three groups on the basis of dominant X anion: O2– (oxyspinel), S2– (thiospinel), and Se2– (seleniospinel). Each group is divided into subgroups according to the dominant valence and then the dominant constituent (or heterovalent-pair of constituents) represented by the letter B in the formula AB2X4. The oxyspinel group can be divided into spinel subgroup 2-3 (A2+B3+2O4) and ulvöspinel subgroup 4-2 (A4+B2+2O4), thiospinel group into carrollite subgroup 1-3.5 (A1+B3.5+2S4) and linnaeite subgroup 2-3 (A2+B3+2S4), and the selenospinel group into bornhardtite subgroup 2-3 (A2+B3+2Se4) and tyrrellite. Once the subgroup is established by the valence of B and the dominant B-cation, then the mineral species is identified by the dominant A-cation. There are thirty species in the oxyspinel group, twenty in the thiospinel group and three in the seleniospinel group.


IMA 17-I: Revised end-member formula for flurlite
Proposal 17-I is accepted. A re-evaluation of the site occupancies in flurlite, using BVS calculations, resulted in a change in the dominant cation in the M1 site from Mn2+ to Zn. Consequently, the end-member formula for flurlite becomes [5]Zn[6]Zn3[6]Fe3+(PO4)3(OH)2(H2O)7·2H2O.


IMA 18-A: Redefinition of eztlite
Proposal 18-A is accepted, and the formula for eztlite is redefined, according to new analytical results. The previously accepted formula, published by Sidney Williams in 1982, was Fe3+6Pb2+2(Te4+O3)3(Te6+O6)(OH)10·nH2O, with n about 8. This formula is now redefined to Pb2+2Fe3+3(Te4+O3)3(SO4)O2Cl.

Nepheline - revised chemical formula
In the IMA List of Minerals the ideal chemical formulae of kalsilite and nepheline are given as KAlSiO4 and NaAlSiO4, respectively. Whereas the formula of kalsilite is correct, nepheline must contain some amount of potassium substituting for sodium. Both kalsilite and nepheline are hexagonal, space group P63. In kalsilite, which has a smaller unit cell, all cavities which host alkali cations have a hexagonal outline and are occupied by potassium; in nepheline, due to the doubling of the a parameter, there are 3 cavities with oval outline and 1 cavity with hexagonal outline: the former are occupied by sodium, the latter by potassium. Accordingly, the chemical formula of nepheline should be Na3K(Al4Si4O16). All known chemical analyses of nepheline, including those of nepheline from the type locality (Monte Somma – Vesuvius area, Italy) match the above formula. Therefore potassium is an essential constituent of nepheline and it should appear in the chemical formula of the mineral. This is an executive decision taken by the officers of the IMA CNMNC.


NEWSLETTER 43 April 2018

IMA No. 2017-115
Fiemmeite
Cu2(C2O4)(OH)2·2H2O
Passo di San Lugano, Fiemme Valley, Carano (TN), Italy
Francesco Demartin*, Italo Campostrini, Paolo Ferretti and Ivano Rocchetti
*E-mail: francesco.demartin@unimi.it
New structure type
Monoclinic: P21/c; structure determined
a = 3.4245(6), b = 10.141(2), c = 19.397(3) Å, β = 90.71(1)°
9.71(55), 7.02(28), 5.079(100), 4.501(50), 3.072(58), 2.891(20), 2.730(15), 2.686(25)
Type material is deposited in the mineralogical collections of MUSE – Museo delle Scienze di Trento, Corso del Lavoro e della Scienza 3, I-38122 Trento, Italy, sample n. 5249
How to cite: Demartin, F., Campostrini, I., Ferretti, P. and Rocchetti, I. (2018) Fiemmeite, IMA 2017-115. CNMNC Newsletter No. 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

IMA No. 2017-116
Vaniniite
Ca2Mn2+3Mn3+2O2(AsO4)4·2H2O
Falotta mine, near Rona village, Oberhalbstein valley, Graubünden, Switzerland
Nicolas Meisser*, Remo Widmer, Thomas Armbruster, Radek Škoda, Philippe Roth and Thomas Mumenthaler
*E-mail: nicolas.meisser@unil.ch
New structure type
Monoclinic: P21/c; structure determined
a = 8.9856 (1), b = 8.9472(1), c = 9.9039(1) Å, β = 94.719(1)°
5.47(40), 4.31(40), 3.99(50), 3.76(70), 3.18(40), 2.99(100), 1.646(70), 1.580(50)
Type material is deposited in the mineralogical collections of Musée Cantonal de Géologie, University of Lausanne, Anthropole, Dorigny, CH-1015 Lausanne, Switzerland, catalogue number MGL n° 080143 (holotype) and 080144 (cotype)
How to cite: Meisser, N., Widmer, R., Armbruster, T., Škoda, R., Roth, P. and Mumenthaler, T. (2018) Vaniniite, IMA 2017-116. CNMNC Newsletter No. 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

IMA No. 2017-117.
Bodieite
Bi3+2(Te4+O3)2(SO4)
On a dump ca. 0.2 km W of the North Star mine, Tintic district, Juab Co., Utah, USA (39.921298°N, 112.108668°W); Pittsburg-Liberty mine, Masonic district, Mono Co., California, USA (38.358637°N, 119.120321°W)
Anthony R. Kampf*, Robert M. Housley, George R. Rossman, Joe Marty and Marek Chorazewicz
*E-mail: akampf@nhm.org
New structure type
Monoclinic: I2/a; structure determined
a = 8.1033(8), b = 7.4302(8), c = 14.695(2) Å, β = 97.771(9)°
7.31(20), 3.331(62), 3.243(100), 3.039(20), 2.716(25), 1.960(15), 1.901(21), 1.662(17)
Cotype material is deposited in the mineralogical collections of the Natural History Museum of Los Angeles County, 900 Exposition Blvd, Los Angeles, California, USA, catalogue numbers 67482 (dump near North Star mine), 67483, 67484, 67485 and 67486 (Pittsburg-Liberty mine)
How to cite: Kampf, A.R., Housley, R.M., Rossman, G.R., Marty, J. and Chorazewicz, M. (2018) Bodieite, IMA 2017-117. CNMNC Newsletter No. 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

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: pietro.vignola@idpa.cnr.it
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 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

IMA No. 2018-001
Paraberzeliite
NaCa2Mg2(AsO4)3
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*, Natalia N. Koshlyakova, Dmitry I. Belakovskiy, Marina F. Vigasina, Natalia V. Zubkova, Atali A. Agakhanov, Sergey N. Britvin, Evgeny G. Sidorov and Dmitry Y. Pushcharovsky
*E-mail: igorpekov@mail.ru
Alluaudite group
Monoclinic: C2/c; structure determined
a = 12.3143(7), b = 13.0679(5), c = 6.7717(4) Å, β = 113.657(7)°
3.642(25), 3.606(17), 3.243(29), 3.096(22), 2.986(34), 2.888(22), 2.822(100), 2.658(29)
Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia, registration number 5067/1
How to cite: Pekov, I.V., Koshlyakova, N.N., Belakovskiy, D.I., Vigasina, M.F., Zubkova, N.V., Agakhanov, A.A., Britvin, S.N., Sidorov, E.G. and Pushcharovsky, D.Y. (2018) Paraberzeliite, IMA 2018-001. CNMNC Newsletter No 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

IMA No. 2018-002
Oyonite
Ag3Mn2Pb4Sb7As4S24
Uchucchacua deposit, Oyon district, Catajambo, Lima Department, Peru (10°37’23”S, 76°41’17”W)
Luca Bindi*, Cristian Biagioni and Frank N. Keutsch
*E-mail: luca.bindi@unifi.it
Lillianite homeotypic series
Monoclinic: P21/n; structure determined
a = 19.181(2), b = 12.775(1), c = 8.179(1) Å, β = 90.47(1)°
3.34(40), 3.29(100), 3.15(30), 2.920(40), 2.860(30), 2.821(70), 2.678(35), 2.045(50)
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 3283/I
How to cite: Bindi, L., Biagioni, C. and Keutsch, F.N. (2018) Oyonite, IMA 2018-002. CNMNC
Newsletter No 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

IMA No. 2017-069a
Belomarinaite
KNa(SO4)
Toludskoe lava field, Fissure Tolbachic eruption 2012-2013, Kamchatka peninsula, Far-Eastern
Region, Russia (55°45’1.32”N, 160°19’40.74”E, 1480 m a.s.l.)
Stanislav K. Filatov*, Andrey P. Shablinskii, Lidiya P. Vergasova, Olga Y. Saprikina, Rimma S.
Bubnova, Svetlana V. Moskaleva and Alexander B. Belousov
*E-mail: filatov.stanislav@gmail.com
Chemically and structurally related to aphthitalite
Trigonal: P3m1; structure determined
a = 5.604(1), c = 7.178(2) Å
4.022(31), 3.591(26), 2.884(74), 2.800(100), 2.391(16), 2.296(8), 2.008(38), 1.634(10)
Type material is deposited in the collections of the Mineralogical Museum, Saint-Petersburg State
University, University Emb. 7/9, St. Petersburg 199034, Russia, catalogue number 1/19678
How to cite: Filatov, S.K., Shablinskii, A.P., Vergasova, L.P., Saprikina, O.Y., Bubnova, R.S.,
Moskaleva, S.V. and Belousov, A.B. (2018) Belomarinaite, IMA 2017-069a. CNMNC Newsletter
No. 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

NEWSLETTER 43 Mai 2018

IMA No. 2018-003
Uakitite
VN
Iron meteorite Uakit (IIAB, 3.96 kg) found in 2016 in the Baunt Evenk district, Republic of
Buryatia, Russia (55°29’47.50”N, 113°33’47.98”E)
Victor V. Sharygin*, German S. Ripp, Grigory A. Yakovlev, Yurii V. Seryotkin, Nikolai S.
Karmanov, Ivan A. Izbrodin, Victor I. Grokhovsky and Elena A. Khromova
*E-mail: sharygin@igm.nsc.ru
Known synthetic analogue
Cubic: Fm3m
a = 4.1328(3) Å
2.386(71), 2.066(100), 1.461(61), 1.246(29), 1.193(19), 0.948(10), 0.924(21), 0.844(14)
Type material is deposited in the meteorite collections of the Central Siberian Geological Museum
of V.S.Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of
Sciences, Novosibirsk, Russia, registration number 52 - meteorite Uakit, and the Museum of the
Buryatian Scientific Centre, Siberian Branch of the Russian Academy of Sciences, Ulan-Ude,
Russia, registration number Uakit-MBSC435/G84
How to cite: Sharygin, V.V., Ripp, G.S., Yakovlev, G.A., Seryotkin, Y.V., Karmanov, N.S.,
Izbrodin, I.A., Grokhovsky, V.I. and Khromova, E.A. (2018) Uakitite, IMA 2018-003. CNMNC
Newsletter No 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

IMA No. 2018-004
Ferrorockbridgeite
(Fe2+,Mn2+)2(Fe3+)3(PO4)3(OH)4(H2O)
Hagendorf-Süd pegmatite mine, 76 metre level, Hagendorf, Oberpfalz, Bavaria, Germany
(49°39’1”N, 12°27’35”E)
Ian E. Grey*, Anthony R. Kampf, Erich Keck, Colin M. MacRae, John Cashion and Yesim
Gozukara
*E-mail: ian.grey@csiro.au
Rockbridgeite group
Orthorhombic: Bbmm; structure determined
a = 13.994(1), b = 16.884(1), c = 5.1866(4) Å
6.987(21), 4.853(26), 3.615(24), 3.465(33), 3.424(39), 3.205(100), 2.774(22), 1.603(24)
Type material is deposited in the mineralogical collections of the Museum Victoria, 11 Nicholson
St, Carlton, VIC 3053, Australia, registration number M54126 (holotype), and the Natural History
Museum of Los Angeles County, 900 Exposition Blvd, Los Angeles, California, USA, catalogue
number 67281 (cotype)
How to cite: Grey, I.E., Kampf, A.R., Keck, E., MacRae, C.M., Cashion, J. and Gozukara, Y.
(2018) Ferrorockbridgeite, IMA 2018-004. CNMNC Newsletter No 43, June 2018, page xxx;
Mineralogical Magazine, 82, xxx-xxx.

IMA No. 2018-005
Belogubite
CuZn(SO4)2·10H2O
Gayskoe Zn-Cu deposit, Orenburgskaya Oblast’, South Urals, Russia (51°28’00”N, 58°29’39”E)
Anatoly V. Kasatkin*, Sergey N. Britvin, Radek Škoda, Atali A. Agakhanov, Dmitriy I.
Belakovskiy and Nikita V. Chukanov
*E-mail: anatoly.kasatkin@gmail.com
Chalcanthite group
Triclinic: P1; structure determined
a = 6.2548(1), b = 10.6112(2), c = 6.0439(1) Å, α = 82.587(1), β = 109.625(1), γ = 104.848(1)°
5.73(35), 5.576(47), 4.873(100), 3.907(31), 3.719(45), 3.229(27), 2.915(25), 2.684(26)
Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian
Academy of Sciences, Leninsky Prospekt 18-2, 119071 Moscow, Russia, registration number
5130/1
How to cite: Kasatkin, A.V., Britvin, S.N., Škoda, R., Agakhanov, A.A., Belakovskiy, D.I. and
Chukanov, N.V. (2018) Belogubite, IMA 2018-005. CNMNC Newsletter No 43, June 2018, page
xxx; Mineralogical Magazine, 82, xxx-xxx.

IMA No. 2018-007
Dalnegorskite
Ca5Mn(Si3O9)2
Dalnegorskoe boron deposit, Dalnegorsk, Primorskiy Kray, Russian Far East, Russia
Nadezhda V. Shchipalkina*, Igor V. Pekov, Dmitry A. Ksenofontov, Nikita V. Chukanov, Dmitry
I. Belakovskiy and Natalya N. Koshlyakova
*E-mail: estel58@yandex.ru
Closely related to bustamite
Triclinic: P1; structure determined
a = 7.259(1), b = 7.857(1), c = 7.8765(6) Å, α = 88.55(1), β = 62.58(1), γ = 76.621(6)°
3.284(41), 2.952(100), 2.951(70), 2.280(45), 1.815(92), 1.740(39), 1.708(34), 1.465(39)
Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninsky Prospekt 18-2, 119071 Moscow, Russia, registration number 5184/1
How to cite: Shchipalkina, N.V., Pekov, I.V., Ksenofontov, D.A., Chukanov, N.V., Belakovskiy, D.I. and Koshlyakova, N.N. (2018) Dalnegorskite, IMA 2018-007. CNMNC Newsletter No 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

IMA No. 2018-008
Zubkovaite
Ca3Cu3(AsO4)4
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*, Inna S. Lykova, Atali A. Agakhanov, Dmitry I. Belakovskiy, Marina F. Vigasina, Sergey N. Britvin, Anna G. Turchkova, Evgeny G. Sidorov and Katharina S. Scheidl
*E-mail: igorpekov@mail.ru
New structure type
Monoclinic: C2; structure determined
a = 16.836(3), b = 5.0405(8), c = 9.117(2) Å, β = 117.39(1)°
7.44(100), 3.727(79), 3.334(92), 2.914(73), 2.789(48), 2.765(50), 2.591(96), 2.521(53)
Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninsky Prospekt 18-2, 119071 Moscow, Russia, registration number 5185/1
How to cite: Pekov, I.V., Lykova, I.S., Agakhanov, A.A., Belakovskiy, D.I., Vigasina, M.F., Britvin, S.N., Turchkova, A.G., Sidorov, E.G. and Scheidl, K.S. (2018) Zubkovaite, IMA 2018-008. CNMNC Newsletter No 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

IMA No. 2018-009
Phoxite
(NH4)2Mg2(C2O4)(PO3OH)2(H2O)4
Rowley mine, 125-foot level, Theba, Painted Rock district, Maricopa Co., Arizona, USA (33°2’57”N, 113°1’49.59”W)
Anthony R. Kampf*, Aaron J. Celestian, Barbara P. Nash and Joe Marty
*E-mail: akampf@nhm.org
New structure type
Monoclinic: P21/c; structure determined
a = 7.2962(3), b = 13.5993(4), c = 7.8334(6) Å, β = 108.271(8)°
6.17(100), 5.57(85), 3.799(60), 3.377(59), 2.914(72), 3.536(32), 2.425(37), 2.275(63)
Cotype material is deposited in the mineralogical collections of the Natural History Museum of Los Angeles County, 900 Exposition Blvd, Los Angeles, California, USA, catalogue numbers 66697, 66698, 66699 and 66700
How to cite: Kampf, A.R., Celestian, A.J., Nash, B.P. and Marty, J. (2018) Phoxite, IMA 2018-009. CNMNC Newsletter No 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

IMA No. 2018-011
Achyrophanite
(K,Na)3(Fe3+,Ti,Al,Mg)5O2(AsO4)5
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*, Natalia V. Zubkova, Natalia N. Koshlyakova, Dmitry I. Belakovskiy, Marina F.
Vigasina, Atali A. Agakhanov, Sergey N. Britvin, Anna G. Turchkova, Evgeny G. Sidorov and
Dmitry Y. Pushcharovsky
*E-mail: igorpekov@mail.ru
New structure type
Orthorhombic: P2221; structure determined
a = 6.5824(2), b = 13.2488(4), c = 10.7613(3) Å
5.615(59), 4.174(42), 3.669(31), 3.148(33), 2.852(43), 2.814(100), 2.689(29), 2.237(28)
Type material is deposited in the collections of the Fersman Mineralogical Museum of the Russian
Academy of Sciences, Moscow, Russia, registration number 5029/1
How to cite: Pekov, I.V., Zubkova, N.V., Koshlyakova, N.N., Belakovskiy, D.I., Vigasina, M.F.,
Agakhanov, A.A., Britvin, S.N., Turchkova, A.G., Sidorov, E.G. and Pushcharovsky, D.Y. (2018)
Achyrophanite, IMA 2018-011. CNMNC Newsletter No 43, June 2018, page xxx; Mineralogical
Magazine, 82, xxx-xxx.

IMA No. 2018-012
Dokuchaevite
Cu8O2(VO4)3Cl3
Yadovitaya (“Poisonous”) fumarole, Second scoria cone of the Northern Breakthrough of the
Great Tolbachik Fissure Eruption, Tolbachik volcano, Kamchatka peninsula, Far-Eastern Region,
Russia (55°50’N, 160°20’E)
Oleg I. Siidra*, Evgeny V. Nazarchuk, Anatoly N. Zaitsev, Yury S. Polekhovsky, Thomas Wenzel
and John Spratt
*E-mail: o.siidra@spbu.ru
Chemically and structurally related to yaroshevite
Triclinic: P1; structure determined
a = 6.332(3), b = 8.204(4), c = 15.562(8) Å, α = 90.498(8), β = 97.173(7), γ = 90.896(13)°
15.440(18), 7.276(27), 5.596(43), 4.857(33), 3.193(29), 2.791(30), 2.564(21), 2.522(100)
Type material is deposited in the collections of the Mineralogical Museum, Department of
Mineralogy, St Petersburg State University, St Petersburg, Russia, specimen number 1/19664
How to cite: Siidra, O.I., Nazarchuk, E.V., Zaitsev, A.N., Polekhovsky, Y.S., Wenzel, T. and
Spratt, J. (2018) Dokuchaevite, IMA 2018-012. CNMNC Newsletter No 43, June 2018, page xxx;
Mineralogical Magazine, 82, xxx-xxx.

IMA No. 2018-013
Koryakite
NaKMg2Al2(SO4)6
Yadovitaya (“Poisonous”) fumarole, Second scoria cone of the Northern Breakthrough of the
Great Tolbachik Fissure Eruption, Tolbachik volcano, Kamchatka peninsula, Far-Eastern Region,
Russia (55°50’N, 160°20’E)
Evgeny V. Nazarchuk, Oleg I. Siidra*, Anatoly N. Zaitsev and Natalia S. Vlasenko
*E-mail: o.siidra@spbu.ru
Structurally related to millosevichite and mikasaite
Trigonal: R3 ; structure determined
a = 8.1124(11), c = 22.704(7) Å
5.936(10), 3.585(55), 2.763(100), 2.633(7), 2.340(22), 2.158(12), 1.991(9), 1.789(30)
Type material is deposited in the collections of the Mineralogical Museum, Department of
Mineralogy, St Petersburg State University, St Petersburg, Russia, specimen number 1/19688
How to cite: Nazarchuk, E.V., Siidra, O.I., Zaitsev, A.N. and Vlasenko, N.S. (2018) Koryakite, IMA 2018-013. CNMNC Newsletter No 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

IMA No. 2018-014
Aleutite
[Cu5O2](AsO4)(VO4)·(Cu,K,Pb,Rb,Cs,)Cl
Yadovitaya (‘Poisonous’) fumarole, Second scoria cone of the Northern Breakthrough of the Great Tolbachik Fissure Eruption, Tolbachik volcano, Kamchatka peninsula, Far-Eastern Region, Russia (55°50’N, 160°20’E)
Oleg I. Siidra*, Evgeny V. Nazarchuk, Atali A. Agakhanov and Yury S. Polekhovsky
*E-mail: o.siidra@spbu.ru
New structure type
Monoclinic: C2/m; structure determined
a = 18.090(2), b = 6.2284(6), c = 8.2465(9) Å, β = 90.597(2)°
4.796(46), 3.396(29), 2.985(48), 2.934(74), 2.913(31), 2.825(36), 2.567(30), 2.449(100)
Type material is deposited in the collections of the Mineralogical Museum, Department of Mineralogy, St Petersburg State University, St Petersburg, Russia, specimen number 1/19689
How to cite: Siidra, O.I., Nazarchuk, E.V., Agakhanov, A.A. and Polekhovsky, Y.S. (2018) Aleutite, IMA 2018-014. CNMNC Newsletter No 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

IMA No. 2018-015
Elasmochloite
Na3Cu6BiO4(SO4)5
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*, Sergey N. Britvin, Atali A. Agakhanov, Marina F. Vigasina and Evgeny G. Sidorov
*E-mail: igorpekov@mail.ru
New structure type
Monoclinic: P21/n; structure determined
a = 10.1273(9), b = 10.1193(8), c = 21.112(2) Å, β = 102.272(8)°
10.33(100), 7.04(18), 6.33(14), 3.576(24), 3.397(13), 2.920(14), 2.529(14), 2.460(14)
Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia, registration number 5189/1
How to cite: Pekov, I.V., Britvin, S.N., Agakhanov, A.A., Vigasina, M.F. and Sidorov, E.G. (2018) Elasmochloite, IMA 2018-015. CNMNC Newsletter No 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

IMA No. 2018-016
Majzlanite
K2Na(ZnNa)Ca(SO4)4
Yadovitaya (“Poisonous”) fumarole, Second scoria cone of the Northern Breakthrough of the Great Tolbachik Fissure Eruption, Tolbachik volcano, Kamchatka peninsula, Far-Eastern Region, Russia (55°50’N, 160°20’E)
Oleg I. Siidra*, Evgeny V. Nazarchuk, Anatoly N. Zaitsev and Vladimir V. Shilovskikh
*E-mail: o.siidra@spbu.ru
New structure type
Monoclinic: C2/c; structure determined
a = 16.007(2), b = 9.524(1), c = 9.118(1) Å, β = 94.828(7)°
3.372(40), 3.147(56), 3.106(65), 2.949(50), 2.874(100), 2.835(70), 2.803(45), 2.616(41)
Type material is deposited in the collections of the Mineralogical Museum, Department of Mineralogy, St Petersburg State University, St Petersburg, Russia, specimen number 1/19690
How to cite: Siidra, O.I., Nazarchuk, E.V., Zaitsev, A.N. and Shilovskikh, V.V. (2018) Majzlanite, IMA 2018-016. CNMNC Newsletter No 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

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)
Anthony R. Kampf*, Barbara P. Nash, Luigi Chiappino and Sergio Varvello
*E-mail: akampf@nhm.org
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
How to cite: Kampf, A.R., Nash, B.P., Chiappino, L. and Varvello, S. (2018) Jahnsite-(NaMnMg), IMA 2018-017. CNMNC Newsletter No 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

NOMENCLATURE PROPOSALS APPROVED IN APRIL 2018

Jahnsite group
The jahnsite group is established. Minerals within the jahnsite group conform to the general formula XM1M22M32(H2O)8(OH)2(PO4)4. The jahnsite group is divided into the jahnsite subgroup (M3 = Fe3+), which currently inclues ten mineral species, and the whiteite subgroup (M3 = Al), which currently inclues seven mineral species.

Welinite group
The welinite group is established. Minerals within the welinite group conform to the general formula M22+6(M1aM1b)x+(SiO4)2O(x-2)(OH)(8-x), where x is the total charge pfu at the M1 sites. The welinite group currently includes four mineral species, all of them having M2 = Mn2+: welinite (M1 = W6+☐), franciscanite (M1 = V5+☐), örebroite (M1 = Sb5+Fe3+), and barwoodite (M1 = Nb5+☐).

Ursilite: name discredited
Currently the IMA List of Minerals includes as valid species the following three minerals, all with G (= grandfathered) status: calcioursilite, Ca4(UO2)4(Si2O5)5(OH)6·15H2O; magnioursilite, Mg4(UO2)4(Si2O5)5(OH)6·20H2O; ursilite, Mg4(UO2)4(Si2O5)5.5(OH)5·13H2O. Historically, calcioursilite and magnioursilite were described together in 1957 as “ursilite” from the Oktyabr’skoye deposit, Kyzyltyube-Saj, Samgar Steppe, Tajikistan [Voprosy Geologii Urana (Problems of the Uranium Geology), Moscow, 73 (1957)]. At that occurrence, analyses with Ca >
Mg and Mg > Ca were recorded. Subsequently, calcioursilite and magnioursilite were defined instead of ursilite [Proc. 2nd U.N. Int. Conf. on the Peaceful Uses of Atomic Energy, 2, 298-299 (1958); ibidem, 3, 174-177 (1959)]. Therefore today the name “ursilite” is nothing but an obsolete redundancy, and should be officially discredited. This is an executive decision taken by the officers of the IMA CNMNC.

NOMENCLATURE PROPOSALS APPROVED IN MAY 2018
IMA 18-B: Discreditation of the mineral name ‘marshallsussmanite’ with a reinstatement of the name schizolite
Proposal 18-B is accepted, and ‘marshallsussmanite’ (IMA No. 2013-067) is renamed schizolite, according to historical priority.




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