From structure topology to chemical composition. XXVIII. Titanium silicates: Jinshajiangite from the Oktyabr'skii massif, Donetsk region, Ukraine, a new occurrence

Maxwell C. Day; Elena Sokolova; Frank C. Hawthorne; Robert T. Downs

doi:10.3749/canmin.1900089

From structure topology to chemical composition. XXVIII. Titanium silicates: Jinshajiangite from the Oktyabr'skii massif, Donetsk region, Ukraine, a new occurrence

Maxwell C. Day
, Elena Sokolova
, Frank C. Hawthorne
, Robert T. Downs

Geosciences

Research output: Contribution to journal › Article › peer-review

Abstract

Here we report electron-microprobe data and unit-cell parameters for jinshajiangite, ideally NaBaFe^2þ ₄Ti₂(Si₂O₇)₂ O₂(OH)₂F, from a new locality: the Oktyabr'skii massif in the coastal area of the Azov Sea, Donetsk region, Ukraine. Chemical analysis by electron microprobe gave Nb₂O₅ 1.59, ZrO₂ 0.61, TiO₂ 17.07, SiO₂ 27.60, Al₂O₃ 0.08, Fe₂O₃ 2.04, FeO 16.42, BaO 9.81, ZnO 0.76, MnO 12.97, CaO 1.82, MgO 0.07, K₂O 2.05, Na₂O 2.51, F 2.48, H₂O 1.92, O ¼ F -1.04, sum 98.76 wt.%; H₂O was determined in accord with the required number of monovalent anions for the Ti-dominant perraultite-type minerals: OH þ F ¼ 3 pfu; the Fe^3þ/Fe^2þ ratio was assigned in accord with Mössbauer-spectroscopy results for jinshajiangite from a different locality. The empirical formula calculated on the basis of 19 (O þ F) is (Na_0.71Ca_0.28 A_0.01)_R1(Ba_0.56K_0.38A_0.06)_R1(Fe^2þ _1.99Mn_1.59Fe^3þ _0.22Zn_0.08Mg_0.02Al_0.01A_0.09)_R4 (Ti_1.86Nb_0.10Zr_0.04)_R2(Si_4.00O₁₄)O₂ [(OH)_1.86F_0.14]_R2F_1.00, Z ¼ 4. Unit-cell parameters from the single-crystal data were determined by least-squares refinement of 9807 reflections with I. 10rI and are as follows: a ¼ 10.726(8), b ¼ 13.834(10), c ¼ 11.065(8) Å, a ¼ 108.172(5), b ¼ 99.251(7), c ¼ 90.00(1)8, V ¼ 1537.5(3.4) Å³, space group C-1.

Original language	English (US)
Pages (from-to)	223-229
Number of pages	7
Journal	Canadian Mineralogist
Volume	58
Issue number	2
DOIs	https://doi.org/10.3749/canmin.1900089
State	Published - 2020

Keywords

Donetsk region
Electron-microprobe analysis
Jinshajiangite
Oktyabr'skii massif
Perraultite
Seidozerite supergroup
TS block
Ukraine
Unit-cell parameters

ASJC Scopus subject areas

Geochemistry and Petrology

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10.3749/canmin.1900089

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@article{89f76f3e61ac4d17ad50cab90aa2fa33,

title = "From structure topology to chemical composition. XXVIII. Titanium silicates: Jinshajiangite from the Oktyabr'skii massif, Donetsk region, Ukraine, a new occurrence",

abstract = "Here we report electron-microprobe data and unit-cell parameters for jinshajiangite, ideally NaBaFe2{\th} 4Ti2(Si2O7)2 O2(OH)2F, from a new locality: the Oktyabr'skii massif in the coastal area of the Azov Sea, Donetsk region, Ukraine. Chemical analysis by electron microprobe gave Nb2O5 1.59, ZrO2 0.61, TiO2 17.07, SiO2 27.60, Al2O3 0.08, Fe2O3 2.04, FeO 16.42, BaO 9.81, ZnO 0.76, MnO 12.97, CaO 1.82, MgO 0.07, K2O 2.05, Na2O 2.51, F 2.48, H2O 1.92, O ¼ F -1.04, sum 98.76 wt.\%; H2O was determined in accord with the required number of monovalent anions for the Ti-dominant perraultite-type minerals: OH {\th} F ¼ 3 pfu; the Fe3{\th}/Fe2{\th} ratio was assigned in accord with M{\"o}ssbauer-spectroscopy results for jinshajiangite from a different locality. The empirical formula calculated on the basis of 19 (O {\th} F) is (Na0.71Ca0.28 A0.01)R1(Ba0.56K0.38A0.06)R1(Fe2{\th} 1.99Mn1.59Fe3{\th} 0.22Zn0.08Mg0.02Al0.01A0.09)R4 (Ti1.86Nb0.10Zr0.04)R2(Si4.00O14)O2 [(OH)1.86F0.14]R2F1.00, Z ¼ 4. Unit-cell parameters from the single-crystal data were determined by least-squares refinement of 9807 reflections with I. 10rI and are as follows: a ¼ 10.726(8), b ¼ 13.834(10), c ¼ 11.065(8) {\AA}, a ¼ 108.172(5), b ¼ 99.251(7), c ¼ 90.00(1)8, V ¼ 1537.5(3.4) {\AA}3, space group C-1.",

keywords = "Donetsk region, Electron-microprobe analysis, Jinshajiangite, Oktyabr'skii massif, Perraultite, Seidozerite supergroup, TS block, Ukraine, Unit-cell parameters",

author = "Day, \{Maxwell C.\} and Elena Sokolova and Hawthorne, \{Frank C.\} and Downs, \{Robert T.\}",

year = "2020",

doi = "10.3749/canmin.1900089",

language = "English (US)",

volume = "58",

pages = "223--229",

journal = "Canadian Mineralogist",

issn = "0008-4476",

publisher = "Mineralogical Association of Canada",

number = "2",

}

TY - JOUR

T1 - From structure topology to chemical composition. XXVIII. Titanium silicates

T2 - Jinshajiangite from the Oktyabr'skii massif, Donetsk region, Ukraine, a new occurrence

AU - Day, Maxwell C.

AU - Sokolova, Elena

AU - Hawthorne, Frank C.

AU - Downs, Robert T.

PY - 2020

Y1 - 2020

N2 - Here we report electron-microprobe data and unit-cell parameters for jinshajiangite, ideally NaBaFe2þ 4Ti2(Si2O7)2 O2(OH)2F, from a new locality: the Oktyabr'skii massif in the coastal area of the Azov Sea, Donetsk region, Ukraine. Chemical analysis by electron microprobe gave Nb2O5 1.59, ZrO2 0.61, TiO2 17.07, SiO2 27.60, Al2O3 0.08, Fe2O3 2.04, FeO 16.42, BaO 9.81, ZnO 0.76, MnO 12.97, CaO 1.82, MgO 0.07, K2O 2.05, Na2O 2.51, F 2.48, H2O 1.92, O ¼ F -1.04, sum 98.76 wt.%; H2O was determined in accord with the required number of monovalent anions for the Ti-dominant perraultite-type minerals: OH þ F ¼ 3 pfu; the Fe3þ/Fe2þ ratio was assigned in accord with Mössbauer-spectroscopy results for jinshajiangite from a different locality. The empirical formula calculated on the basis of 19 (O þ F) is (Na0.71Ca0.28 A0.01)R1(Ba0.56K0.38A0.06)R1(Fe2þ 1.99Mn1.59Fe3þ 0.22Zn0.08Mg0.02Al0.01A0.09)R4 (Ti1.86Nb0.10Zr0.04)R2(Si4.00O14)O2 [(OH)1.86F0.14]R2F1.00, Z ¼ 4. Unit-cell parameters from the single-crystal data were determined by least-squares refinement of 9807 reflections with I. 10rI and are as follows: a ¼ 10.726(8), b ¼ 13.834(10), c ¼ 11.065(8) Å, a ¼ 108.172(5), b ¼ 99.251(7), c ¼ 90.00(1)8, V ¼ 1537.5(3.4) Å3, space group C-1.

AB - Here we report electron-microprobe data and unit-cell parameters for jinshajiangite, ideally NaBaFe2þ 4Ti2(Si2O7)2 O2(OH)2F, from a new locality: the Oktyabr'skii massif in the coastal area of the Azov Sea, Donetsk region, Ukraine. Chemical analysis by electron microprobe gave Nb2O5 1.59, ZrO2 0.61, TiO2 17.07, SiO2 27.60, Al2O3 0.08, Fe2O3 2.04, FeO 16.42, BaO 9.81, ZnO 0.76, MnO 12.97, CaO 1.82, MgO 0.07, K2O 2.05, Na2O 2.51, F 2.48, H2O 1.92, O ¼ F -1.04, sum 98.76 wt.%; H2O was determined in accord with the required number of monovalent anions for the Ti-dominant perraultite-type minerals: OH þ F ¼ 3 pfu; the Fe3þ/Fe2þ ratio was assigned in accord with Mössbauer-spectroscopy results for jinshajiangite from a different locality. The empirical formula calculated on the basis of 19 (O þ F) is (Na0.71Ca0.28 A0.01)R1(Ba0.56K0.38A0.06)R1(Fe2þ 1.99Mn1.59Fe3þ 0.22Zn0.08Mg0.02Al0.01A0.09)R4 (Ti1.86Nb0.10Zr0.04)R2(Si4.00O14)O2 [(OH)1.86F0.14]R2F1.00, Z ¼ 4. Unit-cell parameters from the single-crystal data were determined by least-squares refinement of 9807 reflections with I. 10rI and are as follows: a ¼ 10.726(8), b ¼ 13.834(10), c ¼ 11.065(8) Å, a ¼ 108.172(5), b ¼ 99.251(7), c ¼ 90.00(1)8, V ¼ 1537.5(3.4) Å3, space group C-1.

KW - Donetsk region

KW - Electron-microprobe analysis

KW - Jinshajiangite

KW - Oktyabr'skii massif

KW - Perraultite

KW - Seidozerite supergroup

KW - TS block

KW - Ukraine

KW - Unit-cell parameters

UR - https://www.scopus.com/pages/publications/85084329990

UR - https://www.scopus.com/pages/publications/85084329990#tab=citedBy

U2 - 10.3749/canmin.1900089

DO - 10.3749/canmin.1900089

M3 - Article

AN - SCOPUS:85084329990

SN - 0008-4476

VL - 58

SP - 223

EP - 229

JO - Canadian Mineralogist

JF - Canadian Mineralogist

IS - 2

ER -

From structure topology to chemical composition. XXVIII. Titanium silicates: Jinshajiangite from the Oktyabr'skii massif, Donetsk region, Ukraine, a new occurrence

Abstract

Keywords

ASJC Scopus subject areas

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