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)

J 2020

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)

KASATKIN, Anatoly V., Natalia V. ZUBKOVA, Igor V. PEKOV, Nikita V. CHUKANOV, Radek ŠKODA et. al.

Basic information

Original name

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)

Authors

KASATKIN, Anatoly V., Natalia V. ZUBKOVA, Igor V. PEKOV, Nikita V. CHUKANOV, Radek ŠKODA (203 Czech Republic, guarantor, belonging to the institution), Yury S. POLEKHOVSKY, Atali A. AGAKHANOV, Dmitriy I. BELAKOVSKIY, Aleksey M. KUZNETSOV, Sergey N. BRITVIN and Dmitry Yu. PUSHCHAROVSKY

Edition

Mineralogical Magazine, Cambridge University Press, 2020, 0026-461X

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10504 Mineralogy

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 2.062

RIV identification code

RIV/00216224:14310/20:00117558

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1180/mgm.2020.42

UT WoS

000566874000012

Keywords in English

ferriperboeite-(La); perboeite-(La); new mineral; rare-earth silicate; crystal structure; gatelite group; Mochalin Log; South Urals

Abstract

V originále

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.

Citovat

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 and 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, vol. 84, No 4, p. 593-607. ISSN 0026-461X. Available from: https://dx.doi.org/10.1180/mgm.2020.42.

@article{1719116,
   author = {Kasatkin, Anatoly V. and Zubkova, Natalia V. and Pekov, Igor V. and Chukanov, Nikita V. and Škoda, Radek and Polekhovsky, Yury S. and Agakhanov, Atali A. and Belakovskiy, Dmitriy I. and Kuznetsov, Aleksey M. and Britvin, Sergey N. and Pushcharovsky, Dmitry Yu.},
   article_number = {4},
   doi = {http://dx.doi.org/10.1180/mgm.2020.42},
   keywords = {ferriperboeite-(La); perboeite-(La); new mineral; rare-earth silicate; crystal structure; gatelite group; Mochalin Log; South Urals},
   language = {eng},
   issn = {0026-461X},
   journal = {Mineralogical Magazine},
   title = {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)},
   url = {https://doi.org/10.1180/mgm.2020.42},
   volume = {84},
   year = {2020}
}

TY  - JOUR
ID  - 1719116
AU  - Kasatkin, Anatoly V. - Zubkova, Natalia V. - Pekov, Igor V. - Chukanov, Nikita V. - Škoda, Radek - Polekhovsky, Yury S. - Agakhanov, Atali A. - Belakovskiy, Dmitriy I. - Kuznetsov, Aleksey M. - Britvin, Sergey N. - Pushcharovsky, Dmitry Yu.
PY  - 2020
TI  - 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)
JF  - Mineralogical Magazine
VL  - 84
IS  - 4
SP  - 593-607
EP  - 593-607
PB  - Cambridge University Press
SN  - 0026461X
KW  - ferriperboeite-(La)
KW  - perboeite-(La)
KW  - new mineral
KW  - rare-earth silicate
KW  - crystal structure
KW  - gatelite group
KW  - Mochalin Log
KW  - South Urals
UR  - https://doi.org/10.1180/mgm.2020.42
L2  - https://doi.org/10.1180/mgm.2020.42
N2  - 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.
ER  -

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 and 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). \textit{Mineralogical Magazine}. Cambridge University Press, 2020, vol.~84, No~4, p.~593-607. ISSN~0026-461X. Available from: https://dx.doi.org/10.1180/mgm.2020.42.

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