New minerals and nomenclature approved by IMA CNMNC in August and September 2017

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Marco E. Ciriotti
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New minerals and nomenclature approved by IMA CNMNC in August and September 2017

Messaggio da Marco E. Ciriotti » lun 16 ott, 2017 13:14

New minerals and and nomenclature modifications approved in 2017
U. Hålenius, F. Hatert, M. Pasero, S. J. Mills

NEW MINERAL PROPOSALS APPROVED IN AUGUST 2017

IMA No. 2017-040
Gorbunovite
CsLi2(Ti,Fe)Si4O10(F,OH,O)2
Darai-Pioz glacier, Alai mountain range, Tien-Shan, Rashtskiy district, Tajikistan (39°30′N, 70°40′E)
Atali A. Agakhanov*, Leonid A. Pautov, Igor V. Pekov, Vladimir Y. Karpenko, Oleg I. Siidra, Elena Sokolova, Frank C. Hawthorne, Vyacheslav A. Muftakhov and Anatoly V. Kasatkin
*E-mail: atali99@mail.ru
Mica group
Monoclinic: C2/m, C2 or Cm
a = 5.236(2), b = 9.054(4), c = 10.767(4) Å, β =99.61(4)°
4.49(25), 3.69(46), 3.45(34), 2.991(42), 2.608(77), 2.581(100), 2.240(33), 2.188(62)
Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia, registration number 4936/1
How to cite: Agakhanov, A.A., Pautov, L.A., Pekov, I.V., Karpenko, V.Y., Siidra, O.I., Sokolova, E., Hawthorne, F.C., Muftakhov, V.A. and Kasatkin, A.V. (2017) Gorbunovite, IMA 2017-040. CNMNC Newsletter No. 39, October 2017, page 1280; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2017-043
Rinkite-(Y)
Na2Ca4YTi(Si2O7)2OF3
Darai-Pioz alkaline massif, Alai mountain range, Tien-Shan, Rashtskiy district, Tajikistan (39°30′N, 70°40′E)
Leonid A. Pautov, Atali A. Agakhanov*, Vladimir Y. Karpenko, Yulia A. Uvarova, Elena Sokolova and Frank C. Hawthorne
*E-mail: atali99@mail.ru
Seidozerite supergroup
Monoclinic: P21/c; structure determined
a = 7.3934(5), b = 5.6347(4), c = 18.713(1) Å, β = 101.415(2)°
9.18(24), 4.26(8), 3.559(15), 3.057(100), 2.929(17), 2.783(14), 2.688(28), 2.293(15)
Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia, registration number 5043/1
How to cite: Pautov, L.A., Agakhanov, A.A., Karpenko, V.Y., Uvarova, Y.A., Sokolova, E. and Hawthorne, F.C. (2017) Rinkite-(Y), IMA 2017-043. CNMNC Newsletter No. 39, October 2017, page 1280; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2017-044
Kalithallite
K3Tl3+Cl6·2H2O
Northern fumarole field, First 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*, Maria G. Krzhizhanovskaya, Vasiliy O. Yapaskurt, Dmitry I. Belakovskiy and Evgeny G. Sidorov
*E-mail: igorpekov@mail.ru
Known synthetic analogue
Tetragonal: I4/mmm; structure determined
a = 15.9336(6), c = 18.1018(8) Å
5.981(100), 5.636(36), 3.984(20), 3.528(30), 3.315(22), 2.890(15), 2.817(24), 2.201(11)
Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia, registration number 5066/1
How to cite: Pekov, I.V., Krzhizhanovskaya, M.G., Yapaskurt, V.O., Belakovskiy, D.I. and Sidorov, E.G. (2017) Kalithallite, IMA 2017-044. CNMNC Newsletter No. 39, October 2017, page 1280; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2017-045
Strontioruizite
Sr2Mn3+2Si4O11(OH)4·2H2O
N'Chwaning III mine, Kalahari Manganese Fields, Northern Cape Province, South Africa (27°7′50.81″S, 22°50′28.83″E)
Hexiong Yang*, Bruce Cairncross, Xiangping Gu, Tommy Yong and Robert T. Downs
*E-mail: hyang@email.arizona.edu
The Sr analogue of ruizite
Monoclinic: C2; structure determined
a = 9.1575(4), b = 6.2857(4), c = 12.0431(6) Å, β = 91.744(4)°
4.762(42), 4.549(41), 4.219(46), 3.143(100), 2.972(39), 2.785(61), 2.693(37), 2.620(41)
Cotype material is deposited in the collections of the Mineral Museum, University of Arizona, Tucson, USA, catalogue # 21486, and the RRUFF Project, deposition # R160085
How to cite: Yang, H., Cairncross, B., Gu, X., Yong, T. and Downs, R.T. (2017) Strontioruizite, IMA 2017-045. CNMNC Newsletter No. 39, October 2017, page 1280; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2017-046
Barwoodite
Mn2+6Nb5+(SiO4)2O3(OH)3
Big Rock quarry, Granite Mountain, Little Rock, Pulaski Co., Arkansas, USA (34°41′27″N, 92°17′17″W)
Anthony R. Kampf*, Aaron J. Celestian and Barbara P. Nash
*E-mail: akampf@nhm.org
Welinite group
Trigonal: P3; structure determined
a = 8.2139(10), c = 4.8117(4) Å
3.994(34), 3.125(95), 2.858(56), 2.688(57), 2.349(81), 1.793(100), 1.669(23), 1.550(75)
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 66634, 66635, 66636 and 66637
How to cite: Kampf, A.R., Celestian, A.J. and Nash, B.P. (2017) Barwoodite, IMA 2017-046. CNMNC Newsletter No. 39, October 2017, page 1281; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2017-047
Maohokite
MgFe2O4
Xiuyan crater, Liaodong Peninsula, China (40°21′55″N, 123°27′34″E)
Ming Chen*, Jinfu Shu, Xiande Xie and Dayong Tan
*E-mail: mchen@gig.ac.cn
A polymorph of magnesioferrite
Orthorhombic: Pnma
a = 8.907(1), b = 9.937(8), c = 2.981(1) Å
2.663(100), 1.932(90), 1.673(20), 1.533(50), 1.431(12), 1.155(15), 1.131(12), 1.087(30)
Type material is deposited in the mineralogical collections of the Geological Museum, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Tianhe, Kehua Street 511, Guangzhou 510640, China, catalogue number XY-shock gneiss 290
How to cite: Chen, M., Shu, J., Xie, X. and Tan, D. (2017) Maohokite, IMA 2017-047. CNMNC Newsletter No. 39, October 2017, page 1281; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2017-048
Graftonite-(Ca)
CaFe2+2(PO4)2
Michałkowa, in the middle part of the Góry Sowie Block, ∼70  km SW of Wrocław, Poland (50°45′N, 16°27′E)
Adam Pieczka, Frank C. Hawthorne*, Neil Ball, Yassir Abdu and Bożena Gołębiowska
*E-mail: frank_hawthorne@umanitoba.ca
Graftonite group
Monoclinic: P21/c; structure determined
a = 8.792(2), b = 11.743(2), c = 6.169(1) Å, β =99.35(3)°
3.654(100), 3.133(56), 3.097(57), 3.042(76), 3.014(77), 2.979(85), 2.834(68), 2.542(30)
Type material is deposited in the collections of the Mineralogical Museum, University of Wrocław, Cybulskiego 30, 50-205 Wrocław, Poland, catalogue number MMWr IV7674
How to cite: Pieczka, A., Hawthorne, F.C., Ball, N., Abdu, Y. and Gołębiowska, B. (2017) Graftonite-(Ca), IMA 2017-048. CNMNC Newsletter No. 39, October 2017, page 1281; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2017-049
Zoharite
(Ba,K)6(Fe,Cu,Ni)25S27
Halamish outcrops, Hatrurim Complex, Negev Desert, near Arad, Israel (31°9′42″N, 35°17′29″E)
Irina O. Galuskina*, Biljana Krüger, Evgeny V. Galuskin, Hannes Krüger, Yevgeny Vapnik, Mikhail Murashko, Atali A. Agakhanov, Anuschka Pauluhn and Vincent Olieric
*E-mail: irina.galuskina@us.edu.pl
Djerfisheritegroup
Cubic: Pm-3m; structure determined
a = 10.3137(1) Å
3.441(25), 3.264(64), 3.112(45), 2.980(80), 2.368(66), 1.986(21), 1.825(100), 1.770(17)
Type material is deposited in the collections of Fersman Mineralogical Museum, Leninskiy pr., 18/k2, 115162 Moscow, Russia, catalogue number 4959/1
How to cite: Galuskina, I.O., Krüger, B., Galuskin, E.V., Krüger, H., Vapnik, Y., Murashko, M., Agakhanov, A.A., Pauluhn, A. and Olieric, V. (2017) Zoharite, IMA 2017-049. CNMNC Newsletter No. 39, October 2017, page 1281; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2017-050
Graftonite-(Mn)
Mn2+Fe2+2(PO4)2
Upper Lutomia, in the Fore-Sudetic part of the Góry Sowie Block, ∼60  km SW of Wrocław, Poland
Frank C. Hawthorne*, Adam Pieczka, Bożena Gołębiowska, Adam Włodek and Jan Żukrowski
*E-mail: frank_hawthorne@umanitoba.ca
Graftonite group
Monoclinic: P21/c; structure determined
a = 8.811(2), b = 11.494(2), c = 6.138(1) Å, β =99.23(3)°
3.506(73), 3.016(35), 2.953(55), 2.916(53), 2.899(44), 2.874(100), 2.858(79), 2.717(56)
Type material is deposited in the collections of the Mineralogical Museum, University of Wrocław, Cybulskiego 30, 50-205 Wrocław, Poland, catalogue number MMWr IV7927
How to cite: Hawthorne, F.C., Pieczka, A., Gołębiowska, B., Włodek, A. and Żukrowski, J. (2017) Graftonite-(Mn), IMA 2017-050. CNMNC Newsletter No. 39, October 2017, page 1282; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2017-052
Finchite
Sr(UO2)2(V2O8)·5H2O
On the eastern edge of Sulfur Springs Draw, 21 miles S-SE of Lamesa, Martin Co., Texas, USA (32.44203N, 101.87003W)
Tyler Spano, Travis A. Olds*, Susan M. Hall, Anthony R. Kampf, Heather Lowers and Peter C. Burns
*E-mail: tolds@nd.edu
The Sr analogue of francevillite
Orthorhombic: Pbcn; structure determined
a = 8.498(5), b = 10.363(6), c = 16.250(9) Å
8.13(75), 4.25(64), 4.06(100), 3.20(45), 2.98(68), 2.94(47), 2.11(48), 2.03(55)
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 66476 and 66477
How to cite: Spano, T., Olds, T.A., Hall, S.M., Kampf, A.R., Lowers, H. and Burns, P.C. (2017) Finchite, IMA 2017-052. CNMNC Newsletter No. 39, October 2017, page 1282; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2017-054
Baumoite
BaU3Mo2O16(H2O)6
4  km NW of the Radium Hill mine, South Australia, Australia (140°35′44″E, 32°19′20″S)
Peter Elliott,* Jakub Plášil, Václav Petríček, Jiří Čejka and Luca Bindi
*E-mail: peter.elliott@adelaide.edu.au
New structure type
Monoclinic: X2/m(α0γ)0s with X = (0,½,0,½); structure determined
a = 9.884(1), b = 7.5406(2), c = 14.228(1) Å, β = 109.04(1)°
9.175(39), 7.450(100), 3.554(20), 3.365(31), 3.255(31), 3.209(28), 3.067(33), 2.977(20)
Cotype material is deposited in mineralogical collections of the South Australian Museum, North Terrace, Adelaide, South Australia, Australia, registration number G34697
How to cite: Elliott, P., Plášil, J., Petríček, V., Čejka, J. and Bindi, L. (2017) Baumoite, IMA 2017-054. CNMNC Newsletter No. 39, October 2017, page 1282; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2016-054a
Rüdlingerite
Mn2+2V5+As5+O7·2H2O
Fianel mine, Val Ferrera, Grisons, Switzerland (46°21′54″N, 8°13′15″E) (holotype); Valletta mine, Canosio, Piedmont, Italy (44°23′42″N, 7°5′42″E) (cotype)
Nicolas Meisser*, Philippe Roth, Fabrizio Nestola, Radek Škoda, Fernando Cámara, Ferdinando Bosi, Marco E. Ciriotti, Ulf Hålenius, Cédric Schnyder and Roberto Bracco
*E-mail: nicolas.meisser@unil.ch
The As analogue of fianelite
Monoclinic: P21/n; structure determined
a = 7.8289(2), b = 14.5673(4), c = 6.7011(2) Å, β = 93.773(2)°
7.28(50), 6.88(40), 5.34(80), 3.048(100), 2.730(60), 2.452(40), 2.344(50), 2.206(60)
Type material is deposited in the mineralogical collections of the Musée Cantonal de Géologie, University of Lausanne, Antropole-Dorigny, CH-1015 Lausanne, Switzerland, catalogue number MGL 080116 (holotype), and the Museo Regionale di Scienze Naturali, Sezione di Mineralogia, Petrografia e Geologia, via Giovanni Giolitti 36, I-10123 Torino, Italy, catalogue number M/U 17121 (cotype)
How to cite: Meisser, N., Roth, P., Nestola, F., Škoda, R., Cámara, F., Bosi, F., Ciriotti, M.E., Hålenius, U., Schnyder, C. and Bracco, R. (2017) Rüdlingerite, IMA 2016-054a. CNMNC Newsletter No. 39, October 2017, page 1282; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2016-071a
Brandãoite
BeAl2(PO4)2(OH)2(H2O)5
“João Firmino mine”, Pomarolli farm region, Divino das Laranjeiras Co., Minas Gerais, Brazil (18°40′25″S, 41°29′27.5″W)
Luis Menezes, Mario Luiz de Sá Carneiro Chaves, Mark A. Cooper, Neil Ball, Yassir Abdu, Ryan Sharp, Frank C. Hawthorne* and Maxwell Day
*E-mail: frank_hawthorne@umanitoba.ca
New structure type
Triclinic: P-1; structure determined
a = 6.100(4), b = 8.616(4), c = 10.261(5) Å, α = 93.19(1), β = 95.12(1), γ = 96.86(1)°
6.772(82), 5.243(85), 4.982(73), 4.268(100), 3.846(48), 3.091(53), 2.789(68), 2.712(76)
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 M57443
How to cite: Menezes, L., Chaves, M.L.S.C., Cooper, M.A., Ball, N., Abdu, Y., Sharp, R., Hawthorne, F.C. and Day, M. (2017) Brandãoite, IMA 2016-071a. CNMNC Newsletter No. 39, October 2017, page 1283; Mineralogical Magazine, 81, 1279–1286.

NEW MINERAL PROPOSALS APPROVED IN SEPTEMBER 2017

IMA No. 2017-027
Hongheite
Ca19Fe2+Al4(Fe3+,Mg,Al)8(□,B)4BSi18O69(O,OH)9
Bai Shanchong granite, Malage skarn deposit, NE border of the Gejiu Tin Polymetallic Ore-Field, Yunnan Province, China (23°22′12″N, 103°15′44″E)
Jinsha Xu*, Guowu Li, Guang Fan, Xiangkun Ge, Xiangping Zhu and Ganfu Shen
*E-mail: xujinsha117@aliyun.com
Vesuvianite group
Tetragonal: P4/nnc; structure determined
a = 15.667(1), c = 11.725(2) Å
5.850(15), 3.504(23), 3.072(15), 2.929(47), 2.766(100), 2.608(68), 2.589(27), 2.480(29)
Type material is deposited in the mineralogical collections of the Geological Museum of China, Beijing, China, catalogue number M13579
How to cite: Xu, J., Li, G., Fan, G., Ge, X., Zhu, X. and Shen, G. (2017) Hongheite, IMA 2017-027. CNMNC Newsletter No. 39, October 2017, page 1283; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2017-051
Beusite-(Ca)
CaMn2+2(PO4)2
Archean Yellowknife pegmatite field, between Upper Ross Lake and Redout Lake, 75  km NE of Yellowknife and 3.5  km E of the Redout Granite, Northwest Territories, Canada (62°44′37″N, 113°6′26″W)
Frank C. Hawthorne*, Neil Ball, Michael A. Wise, Adam Pieczka and Adam Włodek
*E-mail: frank_hawthorne@umanitoba.ca
Graftonite group
Monoclinic: P21/c; structure determined
a = 8.799(2), b = 11.724(2), c = 6.170(1) Å, β = 99.23(3)°
3.564(97), 3.030(58), 2.991(76), 2.932(87), 2.904(100), 2.873(86), 2.718(86), 1.937(47)
Type material is deposited in the collections of the Department of Mineral Sciences, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, USA, catalogue number 177054
How to cite: Hawthorne, F.C., Ball, N., Wise, M.A., Pieczka, A. and Włodek, A. (2017) Beusite-(Ca), IMA 2017-051. CNMNC Newsletter No. 39, October 2017, page 1283; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2017-058
Wildenauerite
Zn(Fe3+,Mn2+)2MnFe3+(PO4)3(OH)3(H2O)6·2H2O
Cornelia Mine Open Cut, 60 to 67 metre level, Hagendorf-Süd pegmatite, Hagendorf, Oberpfalz, Bavaria, Germany (49°39′1″N, 12°27′35″E)
Ian E. Grey*, Erich Keck, Anthony R. Kampf, Colin M. MacRae, John D. Cashion, A. Matt Glen, Cameron J. Davidson and Yesim Gozukara
*E-mail: ian.grey@csiro.au
Related to schmidite and wilhelmgümbelite
Orthorhombic: Pmab; structure determined
a = 11.044(1), b = 25.431(1), c = 6.412(1) Å
12.77(63), 8.368(21), 5.529(15), 5.440(17), 3.760(15), 3.180(22), 2.767(100), 2.718(13)
Type material is deposited in the mineralogical collections of the Museum Victoria, Carlton, Victoria 3053, Australia, registration number M53979
How to cite: Grey, I.E., Keck, E., Kampf, A.R., MacRae, C.M., Cashion, J.D., Glen, A.M., Davidson, C.J. and Gozukara, Y. (2017) Wildenauerite, IMA 2017-058. CNMNC Newsletter No. 39, October 2017, page 1284; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2017-059
Magnesio-hornblende
□Ca2(Mg4Al)(Si7Al)O22(OH)2
Sand dunes of Lüderitz, Karas Region, Namibia (26°38′52″S, 15°09′28″E)
Roberta Oberti*, Massimo Boiocchi, Frank C. Hawthorne and Marco E. Ciriotti
*E-mail: oberti@crystal.unipv.it
Amphibole supergroup
Monoclinic: C2/m; structure determined
a = 9.8308(7), b = 18.0659(11), c = 5.2968(4) Å, β = 104.771(6)°
8.412(74), 3.386(48), 3.121(72), 2.709(100), 2.596(45), 2.541(57), 2.338(41), 2.164(39)
Type material is deposited in the collections of the Museo di Mineralogia, Sistema Museale di Ateneo, University of Pavia, Italy, catalogue number 2017-01
How to cite: Oberti, R., Boiocchi, M., Hawthorne, F.C. and Ciriotti, M.E. (2017) Magnesio-hornblende, IMA 2017-059. CNMNC Newsletter No. 39, October 2017, page 1284; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2017-060
Novograblenovite
(NH4,K)MgCl3·6H2O
Basaltic lava of the 2012–2013 Tolbachik effusive eruption, Plosky Tolbachik volcano, Kamchatka Peninsula, Far-Eastern Region, Russia (55°45′28.8″N, 160°18′39.3″E)
Viktor M. Okrugin, Sharapat S. Kudaeva, Oxana V. Karimova*, Olga V. Yakubovich, Dmitry I. Belakovskiy, Nikita V. Chukanov, Andrey A. Zolotarev, Vlad V. Gurzhiy, Nina G. Zinovieva, Andrew А. Shiryaev and Pavel M. Kartashov
*E-mail: oxana.karimova@gmail.com
Chemically and structurally related to carnallite
Monoclinic: C2/c; structure determined
a = 9.273(6), b = 9.517(7), c = 13.248(8) Å, β = 90.16(1)°
3.883(22), 3.825(26), 3.330(100), 2.976(45), 2.353(29), 2.254(18), 2.024(17), 1.997(25)
Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia, registration number 5003/1
How to cite: Okrugin, V.M., Kudaeva, S.S., Karimova, O.V., Yakubovich, O.V., Belakovskiy, D.I., Chukanov, N.V., Zolotarev, A.A., Gurzhiy, V.V., Zinovieva, N.G., Shiryaev, A.A. and Kartashov, P.M. (2017) Novograblenovite, IMA 2017-060. CNMNC Newsletter No. 39, October 2017, page 1284; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2017-061
Tredouxite
NiSb2O6
Bon Accord deposit, Barberton greenstone belt, SE of the town of Nelspruit, South Africa (25°40′59″S, 31°10′0″E)
Luca Bindi*, Federica Zaccarini, Duncan E. Miller and Giorgio Garuti
*E-mail: luca.bindi@unifi.it
The Ni analogue of byströmite
Tetragonal: P42/mnm; structure determined
a = 4.6342(5), c = 9.2154(8) Å
4.14(10), 3.28(100), 2.561(65), 2.316(20), 1.716(60), 1.639(10), 1.467(10), 1.379(20)
Type material is deposited in the mineralogical collections of the Museo di Storia Naturale, University of Florence, Florence, Italy, catalogue number 3281/I
How to cite: Bindi, L., Zaccarini, F., Miller, D.E. and Garuti, G. (2017) Tredouxite, IMA 2017-061. CNMNC Newsletter No. 39, October 2017, page 1284; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2017-062
Stöfflerite
CaAl2Si2O8
NWA 856 Martian meteorite, fall in Morocco
Oliver Tschauner* and Chi Ma
*E-mail: olivert@physics.unlv.edu
A polymorph of anorthite
Tetragonal: I4/m; structure determined
a = 9.255(1), c = 2.745(3) Å
6.54(31), 4.63(42), 2.93(80), 2.05(100), 1.74(32), 1.54(37), 1.46(41), 1.28(44)
Type material is deposited in the E. Stolper's Martian Meteorite Collection, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA, thin section of NWA 856
How to cite: Tschauner, O. and Ma, C. (2017) Stöfflerite, IMA 2017-062. CNMNC Newsletter No. 39, October 2017, page 1285; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2017-063
Magnesioleydetite
Mg(UO2)(SO4)2·11H2O
Markey mine, Red Canyon, White Canyon District, San Juan Co., Utah, USA (37°32′57″N, 110°18′08″W)
Anthony R. Kampf*, Jakub Plášil, Anatoly V. Kasatkin and Joe Marty
*E-mail: akampf@nhm.org
The Mg analogue of leydetite
Monoclinic: C2/c; structure determined
a = 11.3513(3), b = 7.7310(2), c = 21.7957(15) Å, β = 102.387(7)°
10.66(100), 6.31(78), 5.85(38), 5.32(49), 5.06(61), 3.759(36), 3.390(59), 3.193(50)
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 66647, 66648, 66649 and 66650
How to cite: Kampf, A.R., Plášil, J., Kasatkin, A.V. and Marty, J. (2017) Magnesioleydetite, IMA 2017-063. CNMNC Newsletter No. 39, October 2017, page 1285; Mineralogical Magazine, 81, 1279–1286.

IMA No. 2017-030a
Hydroxykenopyrochlore
(□,Ce,Ba)2(Nb,Ti)2O6(OH,F)
Compania Brasileira de Metalurgia e Mineração (CBMM), Araxá, Minas Gerais, Brazil (19°38′S, 46°56′W)
Ritsuro Miyawaki, Koichi Momma, Satoshi Matsubara, Takashi Sano, Masako Shigeoka and Hiroyuki Horiuchi
*E-mail: miyawaki@kahaku.go.jp
Pyrochlore supergroup
Cubic: Fd-3m; structure determined
a = 10.590(5) Å
6.02(22), 3.15(14), 3.02(100), 2.61(29), 1.847(45), 1.576(32), 1.199(9), 1.168(8)
Type material is deposited in the mineralogical collections of the National Museum of Nature and Science, Tsukuba, Japan, registration number NSM-MF16011
How to cite: Miyawaki, R., Momma, K., Matsubara, S., Sano, T., Shigeoka, M. and Horiuchi, H. (2017) Hydroxykenopyrochlore, IMA 2017-030a. CNMNC Newsletter No. 39, October 2017, page 1285; Mineralogical Magazine, 81, 1279–1286.

NOMENCLATURE PROPOSALS APPROVED IN AUGUST 2017

Ericssonite group
The ericssonite group has been established. It includes two minerals: ericssonite, BaMn2+Fe3+(Si2O7)O(OH), and ferroericssonite, BaFe2+Fe3+(Si2O7)O(OH).

NOMENCLATURE PROPOSAL APPROVED IN SEPTEMBER 2017

IMA 17-C: Redefinition of cesbronite
Proposal 17-C is accepted, and the formula of cesbronite, based on single-crystal X-ray diffraction study, is redefined as Cu2+Te6+O4(OH)4. Tellurium occurs as Te6+ and not Te4+.

IMA 17-D: Redefinition of zircophyllite
Proposal 17-D is accepted, and zircophyllite is redefined as an astrophyllite-group mineral, ideally K2NaFe2+7Zr2(Si4O12)2O2(OH)4F (Fe2+-dominant at C7). In accord with proposal IMA 15-B, zircophyllite was considered as a kupletskite-group mineral within the astrophyllite supergroup (Mn2+-dominant at C7), with ideal formula K2NaMn2+7Zr2(Si4O12)2O2(OH)4F. This formula was not in accord with the one reported in the original description of zircophyllite.

REVISED CHEMICAL FORMULAE
A paper on the mineral hemihedrite has been recently published [Mineralogical Magazine, 81 (2017), 1021–1030] in which the ideal chemical formula of the mineral is given as ZnPb10(CrO4)6(SiO4)2(OH)2, with hydroxyl in the place of fluorine. These data were examined carefully by the CNMNC officers and were considered reliable. Accordingly it was agreed to modify the formula of hemihedrite in the official IMA List of Minerals.

ERRATUM
After the approval of the new mineral magnesiobeltrandoite-2N3S (IMA 2016-073; see CNMNC Newsletter 34) the authors became aware that the approved chemical formula of the mineral was not charge-balanced. The correct formula is (Mg6Al2)(Al18Fe3+2)O38(OH)2.
Marco E. Ciriotti

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Marco E. Ciriotti
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Re: New minerals and nomenclature approved by IMA CNMNC in August and September 2017

Messaggio da Marco E. Ciriotti » lun 16 ott, 2017 14:47

Strontioruizite, Sr2Mn3+2[Si4O11(OH)2](OH)2·2H2O, e taniajacoite, SrCaMn3+2[Si4O11(OH)2](OH)·2H2O, sono due specie tra loro molto simili con a medesima località-tipo. Nella seconda il calcio occupa una delle due posizioni occupate dallo stronzio nella strontioruizite.

La cotipazione della miniera di Valletta per la rüdlingerite porta a 7 il numero di specie per la località-tipo della Val Maira.

La formula rivista della cesbronite dovrebbe essere Cu5(Te4+O3)2(OH)6·2H2O.
Marco E. Ciriotti

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Roberto Bracco
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Re: New minerals and nomenclature approved by IMA CNMNC in August and September 2017

Messaggio da Roberto Bracco » lun 16 ott, 2017 18:57

Marco E. Ciriotti ha scritto:
lun 16 ott, 2017 14:47

La cotipazione della miniera di Valletta per la rüdlingerite porta a 7 il numero di specie per la località-tipo della Val Maira.
Tempismo spettacolare! Il minerale appare sul libro "Gioielli delle Alpi italiane" consegnato ieri a Robilante.
Roberto Bracco - AMI Liguria

Perché seguire il calcio, quando accanto c'è lo scandio e poco più in là il vanadio?

VINCENZO MILETTO
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Re: New minerals and nomenclature approved by IMA CNMNC in August and September 2017

Messaggio da VINCENZO MILETTO » mar 17 ott, 2017 0:23

Ciao Marco,

ho appena letto che é stata approvata la magnesio-orneblenda, IMA No. 2017-59.
Allora sono andato a curiosare sa Mindat per vedere come era classificata quella delle miniere di Traversella,
e ho scoperto una foto fatta dal nostro AMIco Fulvio con lo stesso nome e formula chimica, con data 2013.
Anch'io nella collezione ho dei campioni di Traversella classificati col nome di magnesio-orneblenda e poi c'é anche una lunga disquisizione sul libro dei minerali del Piemonte.
A questo punto mi sembra che ci sia qualche cosa che non quadra.
Ti ringrazio fin da ora se puoi aggiungere qualcosa in merito all'argomento.
Vincenzo
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Marco E. Ciriotti
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Re: New minerals and nomenclature approved by IMA CNMNC in August and September 2017

Messaggio da Marco E. Ciriotti » mar 17 ott, 2017 7:21

Tutto quadra, Vincenzo.
Con la revisione del supergruppo degli anfiboli (Hawthorne et al., 2012) molte attribuzioni, per quanto riguarda queste numerose specie minerali, sono state cambiate e ridefinite.
La magnesio-hornblende è stata anch'essa toccata da queste variazioni e infatti la specie era sì inserita tra le valide specie nella lista IMA CNMNC, ma non aveva ne una descrizione-tipo ne una località-tipo. In sostanza era soltanto una potenziale nuova specie minerale.
Con l'approvazione di cui sopra si è sanato il "buco".
Non tutto ciò che in precedenza era classificato come "hornblende" è magnesio-hornblende e pertanto molte delle segnalazioni su mindat lo sono, ma sicuramente alcune invece non lo sono.
Il fatto che il sito di mindat.org fosse aggiornato con formule già OK è del tutto normale. Con la revisione citata (Hawthorne et al., 2012) la formula della magnesio-hornblende (potenziale nuova specie) e di molti altri potenziali nuovi anfiboli erano state definite.
Se il materiale di Traversella (con riferimento alla segnalazione del caso su mindat) è magnesio-hornblende o ferro-hornblende o ferro-ferri-hornblende o magnesio-ferri-fluoro-hornblende o altro ancora andrebbe verificato con analisi recenti.
Tieni presente, Vinci, che Traversella è località-tipo per la ferro-ferri-hornblende, ma non è escluso (anzi...) che altre specie di anfiboli siano presenti.
Il campione namibiano, risultato magnesio-hornblende, è stato indagato perché le analisi preliminari SEM-EDS facevano presupporre trattarsi di un diverso nuovo anfibolo. In effetti non è certo la magnesio-hornblende più pura dell'universo, ma visto che il lavoro era stato fatto e che comunque la classificazione in magnesio-hornblende ci sta - tutto sommato - piuttosto bene, lo si è usato per sanare le carenze (breve descrizione-tipo) della specie.
Marco E. Ciriotti

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