Chirvinskyite, (Na,Ca)13(Fe,Mn,□)2(Ti,Nb)2(Zr,Ti)3(Si2O7)4(OH,O,F)12, a new mineral with a modular wallpaper structure, from the Khibiny alkaline massif (Kola Peninsula, Russia)
Chirvinskyite, (Na,Ca)13(Fe,Mn, )2(Ti,Nb)2(Zr,Ti)3(Si2O7)4(OH,O,F)12, is a new wöhlerite– related zirconotitano–sorosilicate. It is triclinic, P 1, a = 7.0477(5), b = 9.8725(5), c = 12.2204(9) Å, = 77.995(5), = 82.057(6), = 89.988(5) , V = 823.35(9) Å3, Z = 1. The mineral was found in albitized alka...
Language: | unknown |
---|---|
Published: |
2019
|
Subjects: | |
Online Access: | http://hdl.handle.net/11701/19313 |
id |
ftstpetersburgun:oai:dspace.spbu.ru:11701/19313 |
---|---|
record_format |
openpolar |
spelling |
ftstpetersburgun:oai:dspace.spbu.ru:11701/19313 2023-05-15T17:04:56+02:00 Chirvinskyite, (Na,Ca)13(Fe,Mn,□)2(Ti,Nb)2(Zr,Ti)3(Si2O7)4(OH,O,F)12, a new mineral with a modular wallpaper structure, from the Khibiny alkaline massif (Kola Peninsula, Russia) 2019 http://hdl.handle.net/11701/19313 unknown http://hdl.handle.net/11701/19313 2019 ftstpetersburgun 2020-09-14T23:50:15Z Chirvinskyite, (Na,Ca)13(Fe,Mn, )2(Ti,Nb)2(Zr,Ti)3(Si2O7)4(OH,O,F)12, is a new wöhlerite– related zirconotitano–sorosilicate. It is triclinic, P 1, a = 7.0477(5), b = 9.8725(5), c = 12.2204(9) Å, = 77.995(5), = 82.057(6), = 89.988(5) , V = 823.35(9) Å3, Z = 1. The mineral was found in albitized alkaline pegmatites in a foyaite of the Mt. Takhtarvumchorr (Khibiny alkaline massif, Kola Peninsula, Russia, N 67 400, E 33 330). Chirvinskyite forms sheaf–like and radiated aggregates (up to 6 mm in diameter) of split fibrous crystals hosted by saccharoidal fluorapatite and albite. The mineral is pale cream in color, with a silky luster and a white streak. The cleavage is not recognized. Mohs hardness is 5. Chirvinskyite is biaxial (–), 1.670(2), 1.690(2), 1.705(2) (589 nm), 2Vcalc = 80.9 . The calculated and measured densities are 3.41 and 3.07(2) g cm????3, respectively. The empirical formula based on Si = 8 apfu is (Na9.81Ca3.28K0.01)P 13.10(Fe0.72Mn0.69 0.54Mg0.05)P 2.00 (Ti1.81Nb0.19)P 2.00(Zr2.27Ti0.63)P 2.90(Si2O7)4{(OH)5.94O3.09F2.97}P 12.00. Chirvinskyite belongs to a new structure type of minerals and inorganic compounds and is related to the wöhlerite-group minerals. Its modular “wallpaper” structure consists of disilicate groups Si2O7 and three types of “octahedral walls”. The mineral is named in honor of Petr Nikolaevich Chirvinsky (1880–1955), Russian geologist and petrographer, head of the Petrography Department of the Perm’ State University (1943–1953), for his contributions to mineralogy and petrology, including studies of the Khibiny alkaline massif. Other/Unknown Material kola peninsula Saint Petersburg State University: Research Repository (DSpace SPbU) Khibiny ENVELOPE(33.210,33.210,67.679,67.679) Kola Peninsula |
institution |
Open Polar |
collection |
Saint Petersburg State University: Research Repository (DSpace SPbU) |
op_collection_id |
ftstpetersburgun |
language |
unknown |
description |
Chirvinskyite, (Na,Ca)13(Fe,Mn, )2(Ti,Nb)2(Zr,Ti)3(Si2O7)4(OH,O,F)12, is a new wöhlerite– related zirconotitano–sorosilicate. It is triclinic, P 1, a = 7.0477(5), b = 9.8725(5), c = 12.2204(9) Å, = 77.995(5), = 82.057(6), = 89.988(5) , V = 823.35(9) Å3, Z = 1. The mineral was found in albitized alkaline pegmatites in a foyaite of the Mt. Takhtarvumchorr (Khibiny alkaline massif, Kola Peninsula, Russia, N 67 400, E 33 330). Chirvinskyite forms sheaf–like and radiated aggregates (up to 6 mm in diameter) of split fibrous crystals hosted by saccharoidal fluorapatite and albite. The mineral is pale cream in color, with a silky luster and a white streak. The cleavage is not recognized. Mohs hardness is 5. Chirvinskyite is biaxial (–), 1.670(2), 1.690(2), 1.705(2) (589 nm), 2Vcalc = 80.9 . The calculated and measured densities are 3.41 and 3.07(2) g cm????3, respectively. The empirical formula based on Si = 8 apfu is (Na9.81Ca3.28K0.01)P 13.10(Fe0.72Mn0.69 0.54Mg0.05)P 2.00 (Ti1.81Nb0.19)P 2.00(Zr2.27Ti0.63)P 2.90(Si2O7)4{(OH)5.94O3.09F2.97}P 12.00. Chirvinskyite belongs to a new structure type of minerals and inorganic compounds and is related to the wöhlerite-group minerals. Its modular “wallpaper” structure consists of disilicate groups Si2O7 and three types of “octahedral walls”. The mineral is named in honor of Petr Nikolaevich Chirvinsky (1880–1955), Russian geologist and petrographer, head of the Petrography Department of the Perm’ State University (1943–1953), for his contributions to mineralogy and petrology, including studies of the Khibiny alkaline massif. |
title |
Chirvinskyite, (Na,Ca)13(Fe,Mn,□)2(Ti,Nb)2(Zr,Ti)3(Si2O7)4(OH,O,F)12, a new mineral with a modular wallpaper structure, from the Khibiny alkaline massif (Kola Peninsula, Russia) |
spellingShingle |
Chirvinskyite, (Na,Ca)13(Fe,Mn,□)2(Ti,Nb)2(Zr,Ti)3(Si2O7)4(OH,O,F)12, a new mineral with a modular wallpaper structure, from the Khibiny alkaline massif (Kola Peninsula, Russia) |
title_short |
Chirvinskyite, (Na,Ca)13(Fe,Mn,□)2(Ti,Nb)2(Zr,Ti)3(Si2O7)4(OH,O,F)12, a new mineral with a modular wallpaper structure, from the Khibiny alkaline massif (Kola Peninsula, Russia) |
title_full |
Chirvinskyite, (Na,Ca)13(Fe,Mn,□)2(Ti,Nb)2(Zr,Ti)3(Si2O7)4(OH,O,F)12, a new mineral with a modular wallpaper structure, from the Khibiny alkaline massif (Kola Peninsula, Russia) |
title_fullStr |
Chirvinskyite, (Na,Ca)13(Fe,Mn,□)2(Ti,Nb)2(Zr,Ti)3(Si2O7)4(OH,O,F)12, a new mineral with a modular wallpaper structure, from the Khibiny alkaline massif (Kola Peninsula, Russia) |
title_full_unstemmed |
Chirvinskyite, (Na,Ca)13(Fe,Mn,□)2(Ti,Nb)2(Zr,Ti)3(Si2O7)4(OH,O,F)12, a new mineral with a modular wallpaper structure, from the Khibiny alkaline massif (Kola Peninsula, Russia) |
title_sort |
chirvinskyite, (na,ca)13(fe,mn,□)2(ti,nb)2(zr,ti)3(si2o7)4(oh,o,f)12, a new mineral with a modular wallpaper structure, from the khibiny alkaline massif (kola peninsula, russia) |
publishDate |
2019 |
url |
http://hdl.handle.net/11701/19313 |
long_lat |
ENVELOPE(33.210,33.210,67.679,67.679) |
geographic |
Khibiny Kola Peninsula |
geographic_facet |
Khibiny Kola Peninsula |
genre |
kola peninsula |
genre_facet |
kola peninsula |
op_relation |
http://hdl.handle.net/11701/19313 |
_version_ |
1766059292603973632 |