Mineralien / Minerals / Minerales > Systematik und Klassifikation / Systematics and Classification

Neue Mineralien Februar - März 2021 CNMNC Newsletter 60

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Stefan:
IMA 2019-033a
Haitaite-(La)
LaU4+Fe3+2(Ti13Fe2+4Fe3+)Σ18O38
Haita town, Miyi County, Sichuan province, China (26°54’13”N, 102°01’27”E)
Fenggang Wang, Guang Fan, Ting Li, Xiangkun Ge, Yu Wu, Huan Wang and Jian Yao
Crichtonite-Gruppe; Struktur ermittelt
Trigonal
R-3
a = 10.3678(5), c = 20.839(1) Å
3.391(79), 3.241(65), 3.039(49), 2.994(46), 2.871(100), 2.475(62), 1.694(58), 1.436(55)
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 M13859
Wang, F., Fan, G., Li, T., Ge, X., Wu, Y., Wang, H. and Yao, J. (2021) Haitaite-(La), IMA 2019-033a. CNMNC Newsletter 60; Mineralogical Magazine, 85, https://doi.org/10.1180/mgm.2021.30

IMA 2020-081
Dobšináite
Ca2Ca(AsO4)2⋅2H2O
Dionýz mining field, Zemberg-Terézia vein system, 2.2 km NE of the Dobšiná town, Spišsko-gemerské rudohorie Mts., Rožňava Co., Košice Region, Slovakia (48°50’17”N, 20°23’01”E)
Jiří Sejkora, Martin Števko, Radek Škoda, Eva Víšková, Jiří Toman, Sebastián Hreus, Jakub Plášil and Zdeněk Dolníček
Roselite-Gruppe
Monoklin
P21/c
a = 5.990(2), b = 13.013(4), c = 5.726(2) Å, β = 108.47(3)°
5.197(37), 5.002(33), 3.443(38), 3.385(66), 3.249(77), 3.201(42), 3.026(100), 2.822(60)
Type material is deposited in the mineralogical collections of the Moravian Museum, Department of Mineralogy and Petrology, Zelný trh 6, Brno, Czech Republic, catalogue number B12257
Sejkora, J., Števko, M., Škoda, R., Víšková, E., Toman, J., Hreus, S., Plášil, J. and Dolníček, Z. (2021) Dobšináite, IMA 2020-081. CNMNC Newsletter 60; Mineralogical Magazine, 85, https://doi.org/10.1180/mgm.2021.30

IMA 2020-082
Bobfinchite
Na[(UO2)8O3(OH)11]⋅10H2O
Burro mine, Slick Rock district, San Miguel Co., Colorado, USA (38°02’42”N, 108°53’23”W)
Travis A. Olds, Jakub Plášil, Anthony R. Kampf, Peter Burns, Joe Marty and John S. McCloy
Schoepite family; Struktur ermittelt
Orthorhombisch
Pbcn
a = 14.6249(9), b = 14.0389(10), c = 16.6923(10) Å
7.337(100), 3.658(21), 3.590(50), 3.516(22), 3.229(63), 3.176(36), 2.568(20), 2.013(23)
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 75146
Olds, T.A., Plášil, J., Kampf, A.R., Burns, P., Marty, J. and McCloy, J.S. (2021) Bobfinchite, IMA 2020-082. CNMNC Newsletter 60; Mineralogical Magazine, 85, https://doi.org/10.1180/mgm.2021.30

IMA 2020-084
Yuzuxiangite
Sr3Fe3+(Si2O6)2(OH)⋅3H2O
Wessels mine, Kalahari Manganese Fields, Northern Cape Province, South Africa (27°06’51.82”S, 22°51’18.31”E)
Xiangping Gu, Hexiong Yang and Xiande Xie
Das Fe3+-Analog von ohmilite; Struktur ermittelt
Monoklin
P21/m
a = 11.1035(10), b = 7.8463(7), c = 7.8222(7) Å, β = 101.406(8)°
4.632(92), 3.486(100), 3.291(67), 3.175(38), 3.065(57), 2.841(48), 2.118(49), 1.956(46)
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 M16110 (holotype), the University of Arizona Mineral Museum, 1601 E University Blvd, Tucson, AZ 85719, USA, catalogue number 22692, and the RRUFF Project, deposition number R200008
Gu, X., Yang, H. and Xie, X. (2021) Yuzuxiangite, IMA 2020-084. CNMNC Newsletter 60; Mineralogical Magazine, 85, https://doi.org/10.1180/mgm.2021.30

IMA 2020-085
Ferri-hellandite-(Ce)
(Ca3Ce)Ce2Fe3+☐2B4Si4O22(OH)2
Sagåsen larvikite quarry, Mørje, Porsgrunn, Vestfold and Telemark, Norway (59°02’39”N, 9°49’46”E)
Henrik Friis, Radek Škoda, Alf Olav Larsen, Michaela Vašinová-Galiová, Radim Čtvrtlík and Jan Filip
Hellandite-Gruppe; Struktur ermittelt
Monoklin
P2/a
a = 19.1616(2), b = 4.7561(4), c = 10.34016(1) Å, β = 111.173(1)°
8.934(37), 3.466(37), 3.246(33), 3.101(34), 2.929(37), 2.861(44), 2.658(100), 1.910(44)
Type material is deposited in the mineralogical collections of the Natural History Museum, University of Oslo, P.O. Box 1172, Blindern, 0318 Oslo, Norway, catalogue number KNR 44259 (XRD), and the Moravian Museum, Department of Mineralogy and Petrology, Zelný trh 6, Brno, Czech Republic, catalogue number B12258 (EMPA)
Friis, H., Škoda, R., Larsen, A.O., Vašinová-Galiová, M., Čtvrtlík, R. and Filip, J. (2021) Ferri-hellandite-(Ce), IMA 2020-085. CNMNC Newsletter 60; Mineralogical Magazine, 85, https://doi.org/10.1180/mgm.2021.30

IMA 2020-086
Elgoresyite
(Mg5Si2)O9
Suizhou meteorite (Suizhou L6 chondrite), Xihe, Zengdu District, Suizhou, Hubei, China (31°37’N, 113°28’E)
Luca Bindi, Ryosuke Sinmyo, Elena Bykova, Sergey V. Ovsyannikov, Catherine McCammon, Ilya Kupenko, Leyla Ismailova, Leonid Dubrovinsky and Xiande Xie
Neuer Strukturtyp; Struktur ermittelt
Monoklin
C2/m
a = 9.397(2), b = 2.763(1), c = 11.088(3) Å, β = 94.25(2)°
2.801(100), 2.563(35), 2.460(70), 2.308(40), 2.070(35), 2.017(55), 1.968(65), 1.845(60)
Type material is deposited in the mineralogical collections of the Museo di Storia Naturale, Università di Firenze, Via La Pira 4, I-50121, Firenze, Italy, catalogue number 3238/I
Bindi, L., Sinmyo, R., Bykova, E., Ovsyannikov, S.V., McCammon, C., Kupenko, I., Ismailova, L., Dubrovinsky, L. and Xie, X. (2021) Elgoresyite, IMA 2020-086. CNMNC Newsletter 60; Mineralogical Magazine, 85, https://doi.org/10.1180/mgm.2021.30

IMA 2020-087
Phosphocyclite-(Fe)
Fe2+2(P4O12)
Halamish Wadi, Hatrurim basin, Negev Desert, Israel (31°09’47”N, 35°17’57”E)
Sergey N. Britvin, Mikhail N. Murashko, Yevgeny Vapnik, Natalia S. Vlasenko, Maria G. Krzhizhanovskaya, Oleg S. Vereshchagin, Vladimir N. Bocharov and Maksim S. Lozhkin
Das Fe2+-Analog von phosphocyclite-(Ni) (IMA No. 2020-088; this Newsletter); Struktur ermittelt
Monoklin
C2/c
a = 11.834(4), b = 8.340(2), c = 9.911(2) Å, β = 118.50(4)°
6.170(51), 4.253(40), 3.554(20), 3.388(26), 3.201(30), 3.012(100), 2.600(23), 2.398(21)
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 5596/1
Britvin, S.N., Murashko, M.N., Vapnik, Y., Vlasenko, N.S., Krzhizhanovskaya, M.G., Vereshchagin, O.S., Bocharov, V.N. and Lozhkin, M.S. (2021) Phosphocyclite-(Fe), IMA 2020-087. CNMNC Newsletter 60; Mineralogical Magazine, 85, https://doi.org/10.1180/mgm.2021.30

IMA 2020-088
Phosphocyclite-(Ni)
Ni2(P4O12)
Halamish Wadi, Hatrurim basin, Negev Desert, Israel (31°09’47”N, 35°17’57”E)
Sergey N. Britvin, Mikhail N. Murashko, Yevgeny Vapnik, Natalia S. Vlasenko, Maria G. Krzhizhanovskaya, Oleg S. Vereshchagin, Vladimir N. Bocharov and Maksim S. Lozhkin
Das Ni-Analog von phosphocyclite-(Fe) (IMA No. 2020-087; this Newsletter)
Monoklin
C2/c
a = 11.611(2), b = 8.218(2), c = 9.826(2) Å, β = 118.41(4)°
6.086(56), 4.211(39), 3.334(25), 3.145(29), 2.978(100), 2.833(26), 2.357(23), 2.081(23)
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 5596/1
Britvin, S.N., Murashko, M.N., Vapnik, Y., Vlasenko, N.S., Krzhizhanovskaya, M.G., Vereshchagin, O.S., Bocharov, V.N. and Lozhkin, M.S. (2021) Phosphocyclite-(Ni), IMA 2020-088. CNMNC Newsletter 60; Mineralogical Magazine, 85, https://doi.org/10.1180/mgm.2021.30

IMA 2020-089
Sluzhenikinite
Pd15(Sb7-xSnx) 3 ≤ x ≤ 4
Oktyabrsk deposit (schaft no. 1, Oktyabrsk mine), Noril'sk deposits, Russia (69°30’20”N, 88°27’17”E)
Anna Vymazalová, Mark D. Welch, František Laufek, Vladimir V. Kozlov, Chris J. Stanley and Jakub Plášil
Neuer Strukturtyp; Struktur ermittelt
Monoklin
P21/m
a = 7.5558(1), b = 29.2967(3), c = 7.5713(1) Å, β = 119.931(2)°
2.317(65), 2.315(100), 2.308(29), 2.187(89), 2.185(22), 2.183(74), 2.178(15), 2.177(25)
Type material is deposited in the collections of the Department of Earth Sciences, Natural History Museum, London SW7 5BD, UK, catalogue number BM 2020,20 (holotype), and the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 5691/1 (cotype)
Vymazalová, A., Welch, M.D., Laufek, F., Kozlov, V.V., Stanley, C.J. and Plášil, J. (2021) Sluzhenikinite, IMA 2020-089. CNMNC Newsletter 60; Mineralogical Magazine, 85, https://doi.org/10.1180/mgm.2021.30

IMA 2020-090
Protocaseyite
[Al4(OH)6(H2O)12][V10O28]⋅8H2O
Burro mine, Slick Rock district, San Miguel Co., Colorado, USA (38°02’42”N, 108°53’23”W)
Anthony R. Kampf, Mark A. Cooper, John M. Hughes, Chi Ma, William H. Casey and Joe Marty
Decavanadate family; Struktur ermittelt
Triklin
P-1
a = 9.435(2), b = 10.742(3), c = 11.205(3) Å, α = 75.395(7), β = 71.057(10), γ = 81.286(6)°
10.38(100), 8.89(37), 8.15(13), 7.24(38), 5.922(17), 2.177(11), 2.083(13), 1.785(11)
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 75191, 75192 and 75193
Kampf, A.R., Cooper, M.A., Hughes, J.M., Ma, C., Casey, W.H. and Marty, J. (2021) Protocaseyite, IMA 2020-090. CNMNC Newsletter 60; Mineralogical Magazine, 85, https://doi.org/10.1180/mgm.2021.30

IMA 2020-091
Shagamite
KFe11O17
Hatrurim Complex, Negev Desert, near Arad city, Israel (31°14’22”N, 35°16’55”E)
Evgeny V. Galuskin, Hannes Krüger, Irina O. Galuskina, Biljana Krüger, Krzysztof Nejbert and Yevgeny Vapnik
Das Fe3+-Analog von kahlenbergite; Struktur ermittelt
Hexagonal
P63/mmc
a = 5.9327(5), c = 23.782(3) Å
11.89(100), 5.945(29), 2.834(61), 2.654(39), 2.554(25), 2.444(23), 2.375(22), 1.483(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 5634/1
Galuskin, E.V., Krüger, H., Galuskina, I.O., Krüger, B., Nejbert, K. and Vapnik, Y. (2021) Shagamite, IMA 2020-091. CNMNC Newsletter 60; Mineralogical Magazine, 85, https://doi.org/10.1180/mgm.2021.30

IMA 2020-092
Moabite
NiFe3+(PO4)O
Daba-Siwaqa pyrometamorphic complex, Transjordan Plateau, Jordan (31°21’52”N, 36°10’55”E)
Sergey N. Britvin, Mikhail N. Murashko, Maria G. Krzhizhanovskaya, Yevgeny Vapnik, Natalia S. Vlasenko, Oleg S. Vereshchagin, Dmitrii V. Pankin and Evgeny A. Vasiliev
Neuer Strukturtyp; Struktur ermittelt
Orthorhombisch
Pnma
a = 7.216(2), b = 6.406(1), c = 7.471(2) Å
5.20(63), 3.321(37), 3.251(83), 2.726(100), 2.395(19), 2.354(25), 2.304(24), 2.049(18)
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 5627/1
Britvin, S.N., Murashko, M.N., Krzhizhanovskaya, M.G., Vapnik, Y., Vlasenko, N.S., Vereshchagin, O.S., Pankin, D.V. and Vasiliev, E.A. (2021) Moabite, IMA 2020-092. CNMNC Newsletter 60; Mineralogical Magazine, 85, https://doi.org/10.1180/mgm.2021.30

IMA 2020-093
Graulichite-(La)
LaFe3+3(AsO4)2(OH)6
Patte d'Oie mine, Bou Skour mining district, Djebel Saghro mountain range, ca. 50 km south-east of Ouarzazate, Morocco (30°55’47”N, 6°18’05”W)
Cristian Biagioni, Marco E. Ciriotti, Georges Favreau, Daniela Mauro and Federica Zaccarini
Alunite-Supergruppe; Struktur ermittelt
Trigonal
R-3m
a = 7.252(13), c = 16.77(3) Å
5.86(m), 3.045(s), 2.511(mw), 2.239(m), 1.960(mw), 1.813(mw), 1.689(mw), 1.478(m)
Type material is deposited in the mineralogical collections of the Museo di Storia Naturale, Università di Pisa, Via Roma 79, Calci (PI), Italy, catalogue number 19924
Biagioni, C., Ciriotti, M.E., Favreau, G., Mauro, D. and Zaccarini, F. (2021) Graulichite-(La), IMA 2020-093. CNMNC Newsletter 60; Mineralogical Magazine, 85, https://doi.org/10.1180/mgm.2021.30

IMA 2020-094
Yakubovichite
CaNi2Fe3+(PO4)3
Daba-Siwaqa pyrometamorphic complex, Transjordan Plateau, Jordan (31°21’52”N, 36°10’55”E)
Sergey N. Britvin, Mikhail N. Murashko, Maria G. Krzhizhanovskaya, Yevgeny Vapnik, Natalia S. Vlasenko, Oleg S. Vereshchagin, Dmitrii V. Pankin and Anatoly A. Zolotarev
Neuer Strukturtyp; Struktur ermittelt
Orthorhombisch
Imma
a = 10.388(1), b = 13.088(1), c = 6.4794(6) Å
5.82(44), 5.51(73), 5.21(32), 4.214(34), 3.013(31), 2.772(97), 2.748(100), 2.599(38)
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 5626/1
Britvin, S.N., Murashko, M.N., Krzhizhanovskaya, M.G., Vapnik, Y., Vlasenko, N.S., Vereshchagin, O.S., Pankin, D.V. and Zolotarev, A.A. (2021) Yakubovichite, IMA 2020-094. CNMNC Newsletter 60; Mineralogical Magazine, 85, https://doi.org/10.1180/mgm.2021.30

IMA 2020-096
Tennantite-(Cu)
Cu6(Cu4Cu2)As4S13
Layo epithermal deposit, Castilla Province, Arequipa Department, Peru (15°11’16”S, 72°14’30”W)
Cristian Biagioni, Jiří Sejkora, Yves Moëlo, Eric Marcoux, Daniela Mauro and Zdeněk Dolníček
Tetrahedrite-Gruppe; Struktur ermittelt
Kubisch
I-43m
a = 10.171(1) Å
4.152(4), 2.936(100), 2.543(18), 1.995(4), 1.857(8), 1.798(43), 1.650(4), 1.533(21)
Type material is deposited in the collections of the Department of Mineralogy and Petrology, National Museum in Prague, Cirkusová 1740, 19300 Praha 9, Czech Republic, catalogue number P1P 74/2020, the Museo di Storia Naturale, Università di Pisa, Via Roma 79, Calci (PI), catalogue number 19925, and the Mineralogical Museum (MINES ParisTech) of Ecole des Mines de Paris, 60 Blvd. Saint-Michel, 75006 Paris, France, catalogue number ENSMP 83990
Biagioni, C., Sejkora, J., Moëlo, Y., Marcoux, E., Mauro, D. and Dolníček, Z. (2021) Tennantite-(Cu), IMA 2020-096. CNMNC Newsletter 60; Mineralogical Magazine, 85, https://doi.org/10.1180/mgm.2021.30

 NOMENCLATURE/CLASSIFICATION PROPOSALS APPROVED IN FEBRUARY 2021

Nordite supergroup

The nordite supergroup has been established. It currently includes six mineral species: nordite-(La), nordite-(Ce), ferronordite-(La), ferronordite-(Ce), manganonordite-(Ce), and meieranite. All but the latter species belong to the nordite group within the nordite supergroup. Meieranite is an unassigned member of the nordite supergroup.
NOMENCLATURE/CLASSIFICATION PROPOSALS APPROVED IN MARCH 2021

IMA 20-G: Redefinition of philipsburgite

Proposal 20-G is accepted. Philipsburgite shows an ordered distribution of As and P over two symmetrically independent tetrahedral sites and, therefore, is redefined with the new crystal-chemical formula Cu5Zn(AsO4)(PO4)(OH)6⋅H2O.

IMA 20-H: Redefinition of lazurite

Proposal 20-H is accepted, and lazurite is redefined with the idealized formula Na7Ca(Al6Si6O24)(SO4)(S3)–⋅H2O. The neotype specimen originates from the Malo-Bystrinskoe gem lazurite deposit, Baikal Lake area, eastern Siberia, Russia. It is deposited in the collection of the Sidorov Mineralogical Museum (INRTU), Lermontova St. 83, Irkutsk 664074, Russia, registration number MMU/MF 27914.

IMA 20-I: Redefinition of aldermanite

Proposal 20-I is accepted, and the formula of aldermanite is revised to account for essential Na in the structure, and for minor F substitution for OH. The simplified formula becomes [Mg(H2O)6][Na(H2O)2Al3(PO4)2(OH,F)6]⋅H2O, corresponding to the ideal end-member formula [Mg(H2O)6][Na(H2O)2Al3(PO4)2(OH)6]⋅H2O.
REVISED CHEMICAL FORMULAE

Sakhaite and harkerite

In the IMA List of Minerals the formula for sakhaite is given as Ca48Mg16Al(SiO3OH)4(CO3)16(BO3)28⋅(H2O)3(HCl)3. This formula is mirrored from the 2008 Nickel-Nichols list, is not charge-balanced, and has an obscure origin. Actually in the original description of holotype sakhaite [Zap. Vses. Miner. Obsh., 95 (1966), 193–202; Am. Mineral., 51 (1966), 1815–1820], as well as in a subsequent crystal structure study [Dokl. Akad. Nauk SSSR, 239 (1978), 1103–1106], the mineral is given as Al-Si-free.

Sakhaite is closely related to harkerite. A recent detailed study of the sakhaite-harkerite solid solution, based on 14 single-crystal structure refinements [Am. Mineral., 103 (2018), 1749–1760], shows that the two minerals are related by the substitution of four (BO3) triangles by a pentamer formed by one (AlO4) + four (SiO4) tetrahedra (with one oxygen atom protonated).

The two end-member compositions can be taken as the ideal formulae for harkerite and sakhaite, as follows:

harkerite: Ca48Mg16[AlSi4O15(OH)]4(BO3)16(CO3)16⋅2(H2O,HCl)

sakhaite: Ca48Mg16(BO3)32(CO3)16⋅2(H2O,HCl)

The formulae of harkerite and sakhaite have been modified in the IMA List of Minerals accordingly.

Tiettaite

A paper on the mineral tiettaite has been recently published [Crystallogr. Rep., 66 (2021), 76–85] in which the ideal chemical formula of the mineral is given as K4Na12Fe3+2Si16O41(OH)4⋅2H2O, based on a combined Rietveld and EPMA study carried out on a sample of tiettaite after a new finding from the type locality. With respect to the previously accepted formula, potassium is an essential constituent, and titanium is not an essential constituent anymore. The crystal structure of tiettaite has been refined for the first time, and shows that there are two sites occupied by K and four sites occupied by Na. Moreover there is a single octahedral site which is occupied mainly by Fe3+, with very minor Ti. Also in holotype tiettaite it is invariably Fe3+ > Ti. These data were examined carefully by the CNMNC officers and were considered reliable. Accordingly it was agreed to modify the formula of tiettaite in the official IMA List of Minerals.

Uwe Kolitsch:
Beim letzten Satz ist was abgeschnitten:
"... in which the ideal chemi"

Stefan:
Es war noch schlimmer, ich hatte den komplett falschen Newsletter eingestellt. Jetzt ist das korrigiert.

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