KASATKIN, Anatoly V., Natalia V. ZUBKOVA, Igor V. PEKOV, Nikita V. CHUKANOV, Radek ŠKODA, Yury S. POLEKHOVSKY, Atali A. AGAKHANOV, Dmitriy I. BELAKOVSKIY, Aleksey M. KUZNETSOV, Sergey N. BRITVIN a Dmitry Yu. PUSHCHAROVSKY. The mineralogy of the historical Mochalin Log REE deposit, South Urals, Russia. Part I. New gatelite-group minerals ferriperboeite-(La), (CaLa3)(Fe3+Al2Fe2+)[Si2O7][SIO4](3)O(OH)(2) and perboeite-(La), (CaLa3)(Al3Fe2+)[Si2O7][SiO4](3)O(OH)(2). Mineralogical Magazine. Cambridge University Press, 2020, roč. 84, č. 4, s. 593-607. ISSN 0026-461X. Dostupné z: https://dx.doi.org/10.1180/mgm.2020.42.
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Základní údaje
Originální název The mineralogy of the historical Mochalin Log REE deposit, South Urals, Russia. Part I. New gatelite-group minerals ferriperboeite-(La), (CaLa3)(Fe3+Al2Fe2+)[Si2O7][SIO4](3)O(OH)(2) and perboeite-(La), (CaLa3)(Al3Fe2+)[Si2O7][SiO4](3)O(OH)(2)
Autoři KASATKIN, Anatoly V., Natalia V. ZUBKOVA, Igor V. PEKOV, Nikita V. CHUKANOV, Radek ŠKODA (203 Česká republika, garant, domácí), Yury S. POLEKHOVSKY, Atali A. AGAKHANOV, Dmitriy I. BELAKOVSKIY, Aleksey M. KUZNETSOV, Sergey N. BRITVIN a Dmitry Yu. PUSHCHAROVSKY.
Vydání Mineralogical Magazine, Cambridge University Press, 2020, 0026-461X.
Další údaje
Originální jazyk angličtina
Typ výsledku Článek v odborném periodiku
Obor 10504 Mineralogy
Stát vydavatele Velká Británie a Severní Irsko
Utajení není předmětem státního či obchodního tajemství
WWW URL
Impakt faktor Impact factor: 2.062
Kód RIV RIV/00216224:14310/20:00117558
Organizační jednotka Přírodovědecká fakulta
Doi http://dx.doi.org/10.1180/mgm.2020.42
UT WoS 000566874000012
Klíčová slova anglicky ferriperboeite-(La); perboeite-(La); new mineral; rare-earth silicate; crystal structure; gatelite group; Mochalin Log; South Urals
Štítky rivok
Příznaky Mezinárodní význam, Recenzováno
Změnil Změnila: Mgr. Marie Šípková, DiS., učo 437722. Změněno: 27. 1. 2021 12:20.
Anotace
The paper opens a series devoted to the mineral diversity of the Mochalin Log rare earth element (REE) deposit, South Urals, Russia. There is a brief outline of the history of studies and geology of the deposit as well as the description of two new isostructural gatelitegroup minerals, ferriperboeite-(La) (CaLa3)(Fe3+Al2Fe2+)[Si2O7][SiO4](3)O(OH)(2) and perboeite-(La) (CaLa3)(Al3Fe2+)[Si2O7][SiO4](3)O (OH)(2). Both minerals occur in polymineralic nodules and are associated with one another and allanite-(Ce), allanite-(La), bastnasite-(Ce), bastnasite-(La), ferriallanite-(Ce), ferriallanite-(La), ferriperboeite-(Ce), perboeite-(Ce), tornebohmite-(Ce) and tornebohmite-(La). The new minerals form isolated anhedral grains up to 0.3 mm [ferriperboeite-(La)] and 0.5 mm [perboeite-(La)] across and granular aggregates up to 1.5 mm x 0.5 mm Eferriperboeite-(La)] and 3 mm x 1 mm perboeite-(La)]. Both minerals are brownish-black with vitreous lustre. D-calc = 4.510 [ferriperboeite-(La)] and 4.483 [perboeite-(La)] g cm(-3). They are optically biaxial (+); ferriperboeite-(La): alpha = 1.788(5), beta = 1.790(5), gamma = 1.810(5) and 2V(meas) = 40(10)degrees; perboeite-(La): alpha = 1.778(8), beta = 1.783(8), gamma = 1.805(8) and 2V(meas) = 40(10)degrees. Chemical data [wt.%, electron-microprobe; Fe3+:Fe2+ ratio from charge-balance requirements, H2O by stoichiometry; ferriperboeite-(La)/perboeite-(La)] are: CaO 4.91/4.81, ThO2 0.00/0.32, La2O3 23.75/22.16, Ce2O3 19.69/20.05, Pr2O3 0.85/1.09, Nd2O3 1.48/2.18, MgO 1.47/1.38, Al2O3 10.68/11.25, MnO 1.07/0.92, FeO 3.04/3.35, Fe2O3 5.31/3.78, TiO2 0.19/0.19, SiO2 27.47/27.35, F 0.11/0.23, H2O 1.61/1.54, -O = F -0.05/-0.10, total 101.58/100.50. The empirical formulae based on O-20(OH,F)(2) are for ferriperboeite-(La): (Ca0.95La1.58Ce1.30Nd0.10Pr0.06)(Sigma 3.99)(Al2.27Fe0.723+Fe0.462+Mg0.40Mn0.16Ti0.03)(Sigma 4.04)Si(4.96)O20[(OH)(1.94)F(0.1)3]; and for perboeite-(La): (Ca0.94Th0.01La1.49Ce1.36Nd0.14Pr0.07)(Sigma 3.99) (Al(2.4)2Fe(0.52)(3+)Fe(0.51)(2+)Mg(0.38)Mn(0.14) Ti-0.03)(Sigma 4.00)Si4.99O20[(OH)(1.87)F-0.13].( )Both minerals are monoclinic, P2(1)/m; the unit-cell parameters Iferriperboeite-(La)/perboeite-(La)] are a = 8.9458(2)/8.9652(4), b= 5.72971(13)/5.7306(2), c= 17.6192(3)/17.6770(9) angstrom, beta = 115.9497(19)/116.053(6)degrees, V= 812.06(3)/815.88(6)angstrom(3) and Z = 2/2. The crystal structures are solved on a single crystal and converged to R= 0.0355 [ferriperboeite-(La)] and 0.0750 [perboeite-(La)]. Ferriperboeite-(La) and perboeite-(La) are named as the La-analogues of ferriperboeite-(Ce) and perboeite-(Ce), respectively.
VytisknoutZobrazeno: 7. 9. 2024 02:06