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

CNMNC Newsletter 59 Dezember 2020 Januar 2021

(1/1)

Stefan:
IMA 2018-135a
Xuite
Ca3Fe2[(AlO3(OH)]3
Menan volcanic complex, near Rexburg, Madison Co., Idaho, USA (43°47′03′′ N, 111°58′23′′ W – holotype); paralava from Gillette, Campbell Co., Wyoming, USA (cotype)
Seungyeol Lee and Xiaofeng Guo
Garnet-Supergruppe; Struktur ermittelt
Kubisch
Ia-3d
a=12.5056(5) Å
5.106(16), 4.421(65), 3.342(24), 3.126(62), 2.796(100), 2.666(15), 2.552(63), 2.028(5)
Type material is deposited in the mineralogical collections of the Geology Museum of the Department of Geoscience, University of Wisconsin-Madison, 1215 West Dayton Street, Madison, WI 53706, USA, catalogue numbers UWGM 2341 (holotype – Rexburg), UWGM 2342, UWGM 2343, UWGM 2352, and UWGM 2353 (cotypes – Rexburg and Gillette)
Lee, S. and Guo, X.: Xuite, IMA 2018-135a, in: CNMNC Newsletter 59, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-139-2021, 2021.

IMA 2020-066
Hydroxymcglassonite-(K)
KSr4Si8O20(OH)·8H2O
Wessels mine, Kalahari manganese fields, Northern Cape Province, South Africa (27°06′51.82′′ S, 22°51′18.31′′ E)
Hexiong Yang, Xiangping Gu, and Michael M. Scott
Apophyllite-Gruppe; Struktur ermittelt
Tetragonal
P4/mcn
a=9.0792(2), c=16.1551(9) Å
8.008(94), 4.539(42), 3.940(50), 3.638(81), 3.055(34), 2.993(58), 2.800(28), 2.538(100)
Type material is deposited in the collections of the University of Arizona Mineral Museum, 1601 E University Blvd, Tucson, AZ 85719, USA, catalogue number 22691 (holotype), and the RRUFF Project, deposition number R200004 (cotype)
Yang, H., Gu, X., and Scott, M. M.: Hydroxymcglassonite-(K), IMA 2020-066, in: CNMNC Newsletter 59, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-139-2021, 2021.

IMA 2020-067
Donowensite
Ca(H2O)3Fe3+2(V2O7)2
North Wilson pit, Wilson Springs mine (also known as Union Carbide mine), Wilson Springs (also known as Potash Sulfur Springs), Garland Co., Arkansas, USA (34°28′40′′ N, 92°58′05′′ W)
Anthony R. Kampf, John M. Hughes, Barbara P. Nash, and Jason B. Smith
Neuer Strukturtyp; Struktur ermittelt
Triklin
P-1
a=7.3452(4), b=9.9291(4), c=10.0151(7) Å, α=94.455(7), β=98.476(7), γ=100.779(7)°
9.88(100), 7.12(24), 4.176(17), 3.671(20), 3.283(44), 3.202(22), 3.110(19), 2.973(26)
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 75041 and 75042
Kampf, A. R., Hughes, J. M., Nash, B. P., and Smith, J. B.: Donowensite, IMA 2020-067, in: CNMNC Newsletter 59, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-139-2021, 2021.

IMA 2020-068
Mikehowardite
Fe3+4(V5+O4)4(H2O)2·H2O
North Wilson pit, Wilson Springs mine (also known as Union Carbide mine), Wilson Springs (also known as Potash Sulfur Springs), Garland Co., Arkansas, USA (34°28′40′′ N, 92°58′05′′ W)
Anthony R. Kampf, John M. Hughes, Barbara P. Nash, and Jason B. Smith
Strukturell verwandt mit schubnelite; Struktur ermittelt
Triklin
P-1
a=6.655(2), b=6.669(1), c=9.003(2) Å, α=76.515(5), β=84.400(6), γ=75.058(5)°
8.799(86), 6.449(100), 3.693(29), 3.198(88), 2.982(50), 2.909(59), 2.792(31), 2.145(30)
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 75041 and 75042
Kampf, A. R., Hughes, J. M., Nash, B. P., and Smith, J. B.: Mikehowardite, IMA 2020-068, in: CNMNC Newsletter 59, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-139-2021, 2021.

IMA 2020-069
Argentotetrahedrite-(Zn)
Ag6(Cu4Zn2)Sb4S13
Kremnica deposit, Žiar nad Hronom District, Banská Bystrica Region, Slovakia (48°42′44′′ N, 18°54′07′′ E – type locality); Lengenbach quarry, Imfeld, Binn Valley, Canton of Valais, Switzerland (46°21′54′′ N, 8°13′15′′ E – cotype locality)
Jiří Sejkora, Cristian Biagioni, Martin Števko, Thomas Raber, and Philippe Roth
Tetrahedrite-Gruppe; Struktur ermittelt
Kubisch
I-43m
a=10.550(1) Å
7.460(24), 3.046(100), 2.820(6), 2.638(23), 2.487(6), 2.249(6), 1.865(35), 1.591(18)
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 51/2020 (Kremnica), and the Museo di Storia Naturale, Università di Pisa, Via Roma 79, Calci (PI), catalogue numbers 19922 (Kremnica) and 19923 (Lengenbach)
Sejkora, J., Biagioni, C., Števko, M., Raber, T., and Roth, P.: Argentotetrahedrite-(Zn), IMA 2020-069, in: CNMNC Newsletter 59, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-139-2021, 2021.

IMA 2020-070
Zolenskyite
FeCr2S4
Indarch meteorite, fell on 7 April 1891 at Shusha, Azerbaijan (40°04′09′′ N, 47°12′15′′ E)
Chi Ma
Das Fe Analog von brezinaite und a dimorph of daubréelite
Monoklin
C2/m
a=12.84(1), b=3.44(1), c=5.94(1) Å, β=117(1)°
5.251(52), 2.977(47), 2.646(92), 2.625(46), 2.067(93), 2.057(100), 1.720(47), 1.716(78)
Type material is deposited in the meteorite collection of the Division of Geological and Planetary Sciences, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA, catalogue numbers ICM1 and ICM3
Ma, C.: Zolenskyite, IMA 2020-070, in: CNMNC Newsletter 59, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-139-2021, 2021.

IMA 2020-071
Makotoite
Ag12(Cu3Au)S8
Funan gold deposit, ca. 16 km west of Zhaoyuan, Shandong Province, China (37°23′34′′ N, 120°16′05′′ E)
Xiangping Gu
Das Cu–Au-ordered Analog von uytenbogaardtite; Struktur ermittelt
Trigonal
R-3c
a=13.584(2), c=16.781(3) Å
6.873(29), 2.788(16), 2.690(74), 2.576(100), 2.339(32), 2.104(44), 1.970(34), 1.762(19)
Type material is deposited in the mineralogical collection of the Geological Museum of China, No. 16, Yangrou Hutong, Xisi, Beijing 100031, People's Republic of China, catalogue number M16110
Gu, X.: Makotoite, IMA 2020-071, in: CNMNC Newsletter 59, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-139-2021, 2021.

IMA 2020-072
Thebaite-(NH4)
(NH4)3Al(C2O4)(PO3OH)2(H2O)
The 125-foot level of the Rowley mine, ca. 20 km northwest of Theba, Maricopa Co., Arizona, USA (33°02′57′′ N, 113°01′58′′ W)
Anthony R. Kampf, Mark A. Cooper, Aaron J. Celestian, Barbara P. Nash, and Joe Marty
Neuer Strukturtyp; Struktur ermittelt
Monoklin
P21/c
a=11.156(9), b=6.234(6), c=18.65(2) Å, β=102.93(1)°
9.21(88), 7.88(24), 5.39(44), 4.93(26), 4.56(32), 3.350(39), 3.112(100), 2.964(42)
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 75082
Kampf, A. R., Cooper, M. A., Celestian, A. J., Nash, B. P., and Marty, J.: Thebaite-(NH4), IMA 2020-072, in: CNMNC Newsletter 59, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-139-2021, 2021.

IMA 2020-073
Devilliersite
Ca4Ca2Fe3+10O4[(Fe3+10Si2)O36]
Parsa Mountain, eastern part of the Hatrurim Basin, Negev Desert, ca. 10 km southeast of Arad, Israel (31°12.3′ N, 35°17.1′ E)
Biljana Krüger, Hannes Krüger, Irina O. Galuskina, Evgeny V. Galuskin, and Yevgeny Vapnik
Sapphirine-Supergruppe; Struktur ermittelt
Triklin
P-1
a=10.5662(1), b=10.9497(1), c=9.08459(7) Å, α=106.4300(8), β=95.7466(7), γ=124.298(1)°
3.001(49), 2.999(52), 2.733(60), 2.731(58), 2.596(100), 2.593(81), 2.591(79), 1.523(49)
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 5296/1
Krüger, B., Krüger, H., Galuskina, I. O., Galuskin E. V., and Vapnik, Y.: Devilliersite, IMA 2020-073, in: CNMNC Newsletter 59, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-139-2021, 2021.

IMA 2020-074
Uranoclite
(UO2)2(OH)2Cl2(H2O)4
Blue Lizard mine, Red Canyon, White Canyon District, San Juan Co., Utah, USA (37°33′26′′ N, 110°17′44′′ W)
Anthony R. Kampf, Jakub Plášil, Travis A. Olds, Barbara P. Nash, and Joe Marty
Synthetische Nachbildung bekannt
Monoklin
P21/n
a=10.763(8), b=6.156(8), c=17.798(8) Å, β=95.656(15)°
8.85(38), 5.340(100), 5.051(63), 4.421(83), 3.781(38), 3.586(57), 2.828(33), 2.005(37)
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 75101 and 75102
Kampf, A. R., Plášil, J., Olds, T. A., Nash, B. P., and Marty, J.: Uranoclite, IMA 2020-074, in: CNMNC Newsletter 59, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-139-2021, 2021.

IMA 2020-075
Kenoargentotetrahedrite-(Zn)
Ag6(Cu4Zn2)Sb4S12☐
Yindongpo mine, Weishancheng ore field, Tongbai Co., Nanyang, Henan Province, China (32°33′02′′ N, 113°25′25′′ E)
Kai Qu, Xianzhang Sima, Xiangpin Gu, Weizhi Sun, Guang Fan, Zengqian Hou, Pei Ni, Daming Wang, Zeqiang Yang, and Yanjuan Wang
Tetrahedrite-Gruppe; Struktur ermittelt
Kubisch
I-43m
a=10.4624(4) Å
7.345(6), 3.010(100), 2.792(5), 2.606(22), 2.456(5), 2.046(9), 1.844(30), 1.572(15)
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 M16112
Qu, K., Sima, X., Gu, X., Sun, W., Fan, G., Hou, Z., Ni, P., Wang, D., Yang, Z., and Wang, Y.: Kenoargentotetrahedrite-(Zn), IMA 2020-075, in: CNMNC Newsletter 59, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-139-2021, 2021.

IMA 2020-076
Zolotarevite
Na5Zr[Si6O15(OH)3]·3H2O
Mt. Alluaiv, Lovozero alkaline massif, Kola Peninsula, Russia (67°51′48′′ N, 34°30′16′′ E)
Julia A. Mikhailova, Ekaterina A. Selivanova, Sergey V. Krivovichev, Yakov A. Pakhomovsky, and Nikita V. Chukanov
Lovozerite-Gruppe; Struktur ermittelt
Trigonal
R-3m
a=10.294(6), c=13.115(8) Å
7.37(69), 5.26(56), 3.686(64), 3.330(79), 3.265(99), 2.640(100), 2.576(60), 1.842(29)
Type material is deposited in the collection of the Geological and the Mineralogical Museum of the Geological Institute, Kola Science Centre of the Russian Academy of Sciences, 14 Fersman Street, Apatity 184209, Russia, catalogue number GIM 7910
Mikhailova, J. A., Selivanova, E. A., Krivovichev, S. V., Pakhomovsky, Y. A., and Chukanov, N. V.: Zolotarevite, IMA 2020-076, in: CNMNC Newsletter 59, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-139-2021, 2021.

IMA 2020-078
Nitscheite
(NH4)2[(UO2)2(SO4)3(H2O)2]·3H2O
Green Lizard mine, Red Canyon, White Canyon District, San Juan Co., Utah, USA (37°34′37.10′′ N, 110°17′52.80′′ W)
Anthony R. Kampf, Travis A. Olds, Jakub Plášil, Barbara P. Nash, and Joe Marty
Neuer Strukturtyp; Struktur ermittelt
Monoklin
P21/n
a=17.3982(4), b=12.8552(3), c=17.405(1) Å, β=96.649(7)°
6.45(100), 5.69(30), 5.24(28), 4.275(33), 4.081(38), 3.214(40), 2.816(52), 2.591(30)
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 75103 and 75104
Kampf, A. R., Olds, T. A., Plášil, J., Nash, B. P., and Marty, J.: Nitscheite, IMA 2020-078, in: CNMNC Newsletter 59, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-139-2021, 2021.

IMA 2020-079
Argentotetrahedrite-(Hg)
Ag6(Cu4Hg2)Sb4S13
Dongping deposit, Baojing Co., Hunan, China (28°36′05.1′′ N, 109°37′10.8′′ E)
Peng Wu, Xiangping Gu, Kai Qu, Hang Yang, and Yanjuan Wang
Tetrahedrite-Gruppe; Struktur ermittelt
Kubisch
I-43m
a=10.6511(2) Å
4.356(9), 3.065(100), 2.661(20), 2.505(7), 2.085(9), 1.934(9), 1.881(34), 1.603(17)
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 M16114
Wu, P., Gu, X., Qu, K., Yang, H., and Wang, Y.: Argentotetrahedrite-(Hg), IMA 2020-079, in: CNMNC Newsletter 59, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-139-2021, 2021.

IMA 2020-038a
Parahibbingite
Fe2+2(OH)3Cl
Karee mine, Rustenburg District, Bushveld complex, South Africa (25°40′17′′ S, 27°28′17′′ E)
Peter Koděra, Juraj Majzlan, Kilian Pollok, Stefan Kiefer, František Šimko, Jarmila Luptáková, and Grant Cawthorn
A dimorph of hibbingite
Trigonal
R-3m
a=6.94(5), c=14.5(2) Å
5.55(42), 2.94(22), 2.82(62), 2.31(100), 1.85(17), 1.73(36), 1.66(8), 1.53(15)
Type material is deposited in the collections of the Mineralogical Museum, Comenius University, Ilkovičova 6, Bratislava 84215, Slovakia, catalogue number 7601
Koděra, P., Majzlan, J., Pollok, K., Kiefer, S., Šimko, F., Luptáková, J., and Cawthorn, G.: Parahibbingite, IMA 2020-038a, in: CNMNC Newsletter 59, Eur. J. Mineral., 33, https://doi.org/10.5194/ejm-33-139-2021, 2021.

3 Revised chemical formulae

3.1 Petrovite

A paper on the new mineral petrovite has been recently published (Mineral. Mag., 84, 691–698, 2020) in which the ideal chemical formula of the mineral is given as Na10CaCu2(SO4)8. With respect to the previously accepted formula Na8(NaCu)Cu2Na(SO4)8 (cf. CNMNC Newsletter 52), Ca has the status of species-forming constituent and is partitioned at one of the six independent Na sites. After a careful consideration by the officers of the CNMNC, it turned out that Na10CaCu2(SO4)8 can not be an end-member formula for the mineral. In fact, it is an intermediate between the two compositions Na12Cu2(SO4)8 and Na8□2Ca2Cu2(SO4)8, which correspond to the two end-members (with x=0 and x=1, respectively), of the general formula CuNa6−2xCax(SO4)4, where 0≤x≤1. Examination of site occupancies indicates a structural formula Na8(Na0.53Ca0.47)2(Na0.53□0.47)2Cu2(SO4)8, which shows a Na++Na+=Ca2++□ substitution mechanism. However, sodium is the dominant cation at all Na sites of the structure; therefore, the ideal formula of petrovite should correspond to the formula of the predominant, Ca-free end-member constituent, Na12Cu2(SO4)8. The official IMA List of Minerals has been modified accordingly.

3.2 Chiyokoite

A paper on the new mineral chiyokoite has been recently published (Can. Mineral., 58, 653–662, 2020) in which the ideal chemical formula of the mineral is given as Ca3Si(CO3)[B(OH)4]O(OH)5•12H2O. With respect to the previously accepted formula, arsenic is not an essential constituent anymore. Actually, the chemical and crystallographic data show that arsenic, in the form of the complex anion (AsO3)3−, is a subordinate constituent in the channels of the structure. These data were examined carefully by the CNMNC officers and were considered reliable. Accordingly, it was agreed to modify the formula of chiyokoite in the official IMA List of Minerals.

Stefan:
Hydroxymcglassonite-(K)

sollte wohl eher
P4/mcn  =>  P4/mnc
sein

Viele Grüße
Stefan

Uwe Kolitsch:
Nicht unbedingt - könnte auch eine Nicht-Standard-Aufstellung der Raumgruppe sein.

Navigation

[0] Themen-Index

Zur normalen Ansicht wechseln