Odikhinchaite, Na<sub>9</sub>Sr<sub>3</sub>[(H<sub>2</sub>O)<sub>2</sub>Na]Ca<sub>6</sub>Mn<sub>3</sub>Zr<sub>3</sub>NbSi (Si<sub>24</sub>O<sub>72</sub>)O(OH)<sub>3</sub>(CO<sub>3</sub>)·H<sub>2</sub>O, a New Eudialyte-Group Mineral from the Odikhincha Intrusion, Taimyr Peninsula, Russia
The new eudialyte-group mineral, odikhinchaite, was discovered in a peralkaline pegmatite vein hosted by melteigite at the Odikhincha ultrabasic alkaline–carbonatite intrusion, Taimyr Peninsula, Krasnoyarsk Krai, Russia. Associated minerals are orthoclase, albite, aegirine, cancrinite, ancylite-(Ce)...
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2020-11-01
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Online Access: | https://www.mdpi.com/2075-163X/10/12/1062 |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yuliya D. Gritsenko Nikita V. Chukanov Sergey M. Aksenov Igor V. Pekov Dmitry A. Varlamov Leonid A. Pautov Svetlana A. Vozchikova Dmitry A. Ksenofontov Sergey N. Britvin |
spellingShingle |
Yuliya D. Gritsenko Nikita V. Chukanov Sergey M. Aksenov Igor V. Pekov Dmitry A. Varlamov Leonid A. Pautov Svetlana A. Vozchikova Dmitry A. Ksenofontov Sergey N. Britvin Odikhinchaite, Na<sub>9</sub>Sr<sub>3</sub>[(H<sub>2</sub>O)<sub>2</sub>Na]Ca<sub>6</sub>Mn<sub>3</sub>Zr<sub>3</sub>NbSi (Si<sub>24</sub>O<sub>72</sub>)O(OH)<sub>3</sub>(CO<sub>3</sub>)·H<sub>2</sub>O, a New Eudialyte-Group Mineral from the Odikhincha Intrusion, Taimyr Peninsula, Russia Minerals odikhinchaite new mineral eudialyte group crystal structure peralkaline pegmatite Odikhincha intrusion |
author_facet |
Yuliya D. Gritsenko Nikita V. Chukanov Sergey M. Aksenov Igor V. Pekov Dmitry A. Varlamov Leonid A. Pautov Svetlana A. Vozchikova Dmitry A. Ksenofontov Sergey N. Britvin |
author_sort |
Yuliya D. Gritsenko |
title |
Odikhinchaite, Na<sub>9</sub>Sr<sub>3</sub>[(H<sub>2</sub>O)<sub>2</sub>Na]Ca<sub>6</sub>Mn<sub>3</sub>Zr<sub>3</sub>NbSi (Si<sub>24</sub>O<sub>72</sub>)O(OH)<sub>3</sub>(CO<sub>3</sub>)·H<sub>2</sub>O, a New Eudialyte-Group Mineral from the Odikhincha Intrusion, Taimyr Peninsula, Russia |
title_short |
Odikhinchaite, Na<sub>9</sub>Sr<sub>3</sub>[(H<sub>2</sub>O)<sub>2</sub>Na]Ca<sub>6</sub>Mn<sub>3</sub>Zr<sub>3</sub>NbSi (Si<sub>24</sub>O<sub>72</sub>)O(OH)<sub>3</sub>(CO<sub>3</sub>)·H<sub>2</sub>O, a New Eudialyte-Group Mineral from the Odikhincha Intrusion, Taimyr Peninsula, Russia |
title_full |
Odikhinchaite, Na<sub>9</sub>Sr<sub>3</sub>[(H<sub>2</sub>O)<sub>2</sub>Na]Ca<sub>6</sub>Mn<sub>3</sub>Zr<sub>3</sub>NbSi (Si<sub>24</sub>O<sub>72</sub>)O(OH)<sub>3</sub>(CO<sub>3</sub>)·H<sub>2</sub>O, a New Eudialyte-Group Mineral from the Odikhincha Intrusion, Taimyr Peninsula, Russia |
title_fullStr |
Odikhinchaite, Na<sub>9</sub>Sr<sub>3</sub>[(H<sub>2</sub>O)<sub>2</sub>Na]Ca<sub>6</sub>Mn<sub>3</sub>Zr<sub>3</sub>NbSi (Si<sub>24</sub>O<sub>72</sub>)O(OH)<sub>3</sub>(CO<sub>3</sub>)·H<sub>2</sub>O, a New Eudialyte-Group Mineral from the Odikhincha Intrusion, Taimyr Peninsula, Russia |
title_full_unstemmed |
Odikhinchaite, Na<sub>9</sub>Sr<sub>3</sub>[(H<sub>2</sub>O)<sub>2</sub>Na]Ca<sub>6</sub>Mn<sub>3</sub>Zr<sub>3</sub>NbSi (Si<sub>24</sub>O<sub>72</sub>)O(OH)<sub>3</sub>(CO<sub>3</sub>)·H<sub>2</sub>O, a New Eudialyte-Group Mineral from the Odikhincha Intrusion, Taimyr Peninsula, Russia |
title_sort |
odikhinchaite, na<sub>9</sub>sr<sub>3</sub>[(h<sub>2</sub>o)<sub>2</sub>na]ca<sub>6</sub>mn<sub>3</sub>zr<sub>3</sub>nbsi (si<sub>24</sub>o<sub>72</sub>)o(oh)<sub>3</sub>(co<sub>3</sub>)·h<sub>2</sub>o, a new eudialyte-group mineral from the odikhincha intrusion, taimyr peninsula, russia |
publisher |
MDPI AG |
series |
Minerals |
issn |
2075-163X |
publishDate |
2020-11-01 |
description |
The new eudialyte-group mineral, odikhinchaite, was discovered in a peralkaline pegmatite vein hosted by melteigite at the Odikhincha ultrabasic alkaline–carbonatite intrusion, Taimyr Peninsula, Krasnoyarsk Krai, Russia. Associated minerals are orthoclase, albite, aegirine, cancrinite, ancylite-(Ce), catapleiite, and wadeite. Odikhinchaite occurs as dense rosette-like aggregates up to 11 mm across, consisting of split lamellar individuals. The mineral is translucent to transparent, deep purple, with vitreous luster. Odikhinchaite is brittle, with uneven fracture; distinct cleavage on (001) is observed. Hardness determined by the micro-indentation method is equal to 430 kgf/mm<sup>2</sup>; the Mohs hardness is 5. <i>D</i>(meas.) is 2.97(1) g·cm<sup>−3</sup>, <i>D</i>(calc.) is 3.04 g·cm<sup>–3</sup>. Odikhinchaite is optically uniaxial (–), ω = 1.638(2), ε = 1.630(2). The IR spectrum shows the presence of the <sup>IV</sup>Mn<sup>2+</sup>O<sub>4</sub> polyhedra, H<sub>2</sub>O molecules and CO<sub>3</sub><sup>2–</sup> anions. The chemical composition is (electron microprobe, H<sub>2</sub>O determined by the modified Penfield method, CO<sub>2</sub> determined by selection sorption of gaseous annealing products; wt%): Na<sub>2</sub>O 9.25, K<sub>2</sub>O 0.59, CaO 12.77, MnO 5.49, FeO 0.75, MgO 0.24, La<sub>2</sub>O<sub>3</sub> 0.38, Ce<sub>2</sub>O<sub>3</sub> 0.39, Nd<sub>2</sub>O<sub>3</sub> 0.15, Al<sub>2</sub>O<sub>3</sub> 0.07, SiO<sub>2</sub> 44.80, ZrO<sub>2</sub> 11.13, TiO<sub>2</sub> 0.07, Nb<sub>2</sub>O<sub>5</sub> 4.17, Cl 0.69, CO<sub>2</sub> 0.90, H<sub>2</sub>O 2.22, –O = Cl –0.16, total 99.72. The crystal structure was solved using single-crystal X-ray diffraction data. Odikhinchaite is trigonal, space group <i>R</i>3<i>m</i>; the unit-cell parameters are: <i>a</i> = 14.2837(2) Å, <i>c</i> = 30.0697(3) Å, <i>V</i> = 5313.04(12) Å<sup>3</sup>. The new mineral is isostructural with other 12-layered members of the eudialyte group with the space group <i>R</i>3<i>m</i>. Its crystal chemical formula is (<i>Z</i> = 3): {<i><sup>N</sup></i><sup>1</sup>(Na<sub>2.58</sub>Ca<sub>0.42</sub>)<i><sup>N</sup></i><sup>2</sup>[Na<sub>2.37</sub>Ca<sub>0.51</sub>(H<sub>2</sub>O)<sub>0.12</sub>]<i><sup>N</sup></i><sup>3</sup>(Sr<sub>2.00</sub>K<sub>0.45</sub>Na<sub>0.35</sub><i>REE</i><sub>0.20</sub>)<i><sup>N</sup></i><sup>4</sup>Na<sub>3</sub><i><sup>N</sup></i><sup>5</sup>[(H<sub>2</sub>O)<sub>1.8</sub>Na<sub>1.2</sub>]}{<i><sup>Z</sup></i>Zr<sub>3</sub><i><sup>M</sup></i><sup>1</sup>Ca<sub>6</sub><i><sup>M</sup></i><sup>2</sup>(Mn<sub>2.49</sub>Fe<sup>2+</sup><sub>0.51</sub>)[<i><sup>M</sup></i><sup>3</sup>Nb(OH)<sub>1.82</sub>O<sub>1.18</sub>](<i><sup>M</sup></i><sup>4</sup>SiOH)[Si<sub>3</sub>O<sub>9</sub>]<sub>2</sub>[Si<sub>9</sub>O<sub>27</sub>]<sub>2</sub><i><sup>X</sup></i><sup>1</sup>[(CO<sub>3</sub>)<sub>0.53</sub>Cl<sub>0.47</sub>]<i><sup>X</sup></i><sup>2</sup>[(H<sub>2</sub>O)<sub>0.6</sub>(O,F)<sub>0.4</sub>]<i><sup>XM</sup></i><sup>4</sup>(CO<sub>3</sub>)<sub>0.15</sub>. The strongest lines of the powder X-ray diffraction pattern [<i>d</i>, Å (<i>I</i>, %) (<i>hkl</i>)] are: 11.42 (64) (101), 4.309 (41) (205), 3.405 (53) (131), 3.208 (45) (208, 036), 3.167 (44) (217), 2.978 (100) (315), 2.858 (86) (404). |
topic |
odikhinchaite new mineral eudialyte group crystal structure peralkaline pegmatite Odikhincha intrusion |
url |
https://www.mdpi.com/2075-163X/10/12/1062 |
work_keys_str_mv |
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doaj-0dacb32004804a5092fb72f0234826b42020-11-28T00:04:35ZengMDPI AGMinerals2075-163X2020-11-01101062106210.3390/min10121062Odikhinchaite, Na<sub>9</sub>Sr<sub>3</sub>[(H<sub>2</sub>O)<sub>2</sub>Na]Ca<sub>6</sub>Mn<sub>3</sub>Zr<sub>3</sub>NbSi (Si<sub>24</sub>O<sub>72</sub>)O(OH)<sub>3</sub>(CO<sub>3</sub>)·H<sub>2</sub>O, a New Eudialyte-Group Mineral from the Odikhincha Intrusion, Taimyr Peninsula, RussiaYuliya D. Gritsenko0Nikita V. Chukanov1Sergey M. Aksenov2Igor V. Pekov3Dmitry A. Varlamov4Leonid A. Pautov5Svetlana A. Vozchikova6Dmitry A. Ksenofontov7Sergey N. Britvin8Fersman Mineralogical Museum of the Russian Academy of Sciences, 119071 Moscow, RussiaInstitute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, RussiaLaboratory of Nature-Inspired Technologies and Environmental Safety of the Arctic, Kola Science Centre, Russian Academy of Sciences, 184200 Apatity, RussiaFaculty of Geology, Moscow State University, 119991 Moscow, RussiaInstitute of Experimental Mineralogy RAS, 142432 Chernogolovka, RussiaFersman Mineralogical Museum of the Russian Academy of Sciences, 119071 Moscow, RussiaInstitute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, RussiaFaculty of Geology, Moscow State University, 119991 Moscow, RussiaDepartment of Crystallography, St Petersburg State University, 199034 St Petersburg, RussiaThe new eudialyte-group mineral, odikhinchaite, was discovered in a peralkaline pegmatite vein hosted by melteigite at the Odikhincha ultrabasic alkaline–carbonatite intrusion, Taimyr Peninsula, Krasnoyarsk Krai, Russia. Associated minerals are orthoclase, albite, aegirine, cancrinite, ancylite-(Ce), catapleiite, and wadeite. Odikhinchaite occurs as dense rosette-like aggregates up to 11 mm across, consisting of split lamellar individuals. The mineral is translucent to transparent, deep purple, with vitreous luster. Odikhinchaite is brittle, with uneven fracture; distinct cleavage on (001) is observed. Hardness determined by the micro-indentation method is equal to 430 kgf/mm<sup>2</sup>; the Mohs hardness is 5. <i>D</i>(meas.) is 2.97(1) g·cm<sup>−3</sup>, <i>D</i>(calc.) is 3.04 g·cm<sup>–3</sup>. Odikhinchaite is optically uniaxial (–), ω = 1.638(2), ε = 1.630(2). The IR spectrum shows the presence of the <sup>IV</sup>Mn<sup>2+</sup>O<sub>4</sub> polyhedra, H<sub>2</sub>O molecules and CO<sub>3</sub><sup>2–</sup> anions. The chemical composition is (electron microprobe, H<sub>2</sub>O determined by the modified Penfield method, CO<sub>2</sub> determined by selection sorption of gaseous annealing products; wt%): Na<sub>2</sub>O 9.25, K<sub>2</sub>O 0.59, CaO 12.77, MnO 5.49, FeO 0.75, MgO 0.24, La<sub>2</sub>O<sub>3</sub> 0.38, Ce<sub>2</sub>O<sub>3</sub> 0.39, Nd<sub>2</sub>O<sub>3</sub> 0.15, Al<sub>2</sub>O<sub>3</sub> 0.07, SiO<sub>2</sub> 44.80, ZrO<sub>2</sub> 11.13, TiO<sub>2</sub> 0.07, Nb<sub>2</sub>O<sub>5</sub> 4.17, Cl 0.69, CO<sub>2</sub> 0.90, H<sub>2</sub>O 2.22, –O = Cl –0.16, total 99.72. The crystal structure was solved using single-crystal X-ray diffraction data. Odikhinchaite is trigonal, space group <i>R</i>3<i>m</i>; the unit-cell parameters are: <i>a</i> = 14.2837(2) Å, <i>c</i> = 30.0697(3) Å, <i>V</i> = 5313.04(12) Å<sup>3</sup>. The new mineral is isostructural with other 12-layered members of the eudialyte group with the space group <i>R</i>3<i>m</i>. Its crystal chemical formula is (<i>Z</i> = 3): {<i><sup>N</sup></i><sup>1</sup>(Na<sub>2.58</sub>Ca<sub>0.42</sub>)<i><sup>N</sup></i><sup>2</sup>[Na<sub>2.37</sub>Ca<sub>0.51</sub>(H<sub>2</sub>O)<sub>0.12</sub>]<i><sup>N</sup></i><sup>3</sup>(Sr<sub>2.00</sub>K<sub>0.45</sub>Na<sub>0.35</sub><i>REE</i><sub>0.20</sub>)<i><sup>N</sup></i><sup>4</sup>Na<sub>3</sub><i><sup>N</sup></i><sup>5</sup>[(H<sub>2</sub>O)<sub>1.8</sub>Na<sub>1.2</sub>]}{<i><sup>Z</sup></i>Zr<sub>3</sub><i><sup>M</sup></i><sup>1</sup>Ca<sub>6</sub><i><sup>M</sup></i><sup>2</sup>(Mn<sub>2.49</sub>Fe<sup>2+</sup><sub>0.51</sub>)[<i><sup>M</sup></i><sup>3</sup>Nb(OH)<sub>1.82</sub>O<sub>1.18</sub>](<i><sup>M</sup></i><sup>4</sup>SiOH)[Si<sub>3</sub>O<sub>9</sub>]<sub>2</sub>[Si<sub>9</sub>O<sub>27</sub>]<sub>2</sub><i><sup>X</sup></i><sup>1</sup>[(CO<sub>3</sub>)<sub>0.53</sub>Cl<sub>0.47</sub>]<i><sup>X</sup></i><sup>2</sup>[(H<sub>2</sub>O)<sub>0.6</sub>(O,F)<sub>0.4</sub>]<i><sup>XM</sup></i><sup>4</sup>(CO<sub>3</sub>)<sub>0.15</sub>. The strongest lines of the powder X-ray diffraction pattern [<i>d</i>, Å (<i>I</i>, %) (<i>hkl</i>)] are: 11.42 (64) (101), 4.309 (41) (205), 3.405 (53) (131), 3.208 (45) (208, 036), 3.167 (44) (217), 2.978 (100) (315), 2.858 (86) (404).https://www.mdpi.com/2075-163X/10/12/1062odikhinchaitenew mineraleudialyte groupcrystal structureperalkaline pegmatiteOdikhincha intrusion |