FROM THE WILUY RIVER, YAKUTIA, RUSSIA
A low-temperature, Si-deficient variety of vesuvianite occurs in porous tetrahedral “achtarandite ” pseudomorphs consisting of hibschite, along the banks of the Wiluy River, Yakutia, Russia, the type locality of grossular and wiluite. The (H4O4)4–-for-(SiO4)4 – hydrogarnet-type substitution is evide...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.490.5633 2023-05-15T18:44:57+02:00 FROM THE WILUY RIVER, YAKUTIA, RUSSIA Evgeny V. Galuskin Irina O. Galuskina The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.5633 http://rruff.info/doclib/cm/vol41/CM41_833.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.5633 http://rruff.info/doclib/cm/vol41/CM41_833.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://rruff.info/doclib/cm/vol41/CM41_833.pdf Si-deficient vesuvianite hydrogarnet-type substitution boron wiluite infrared spectra Raman spectra electron- microprobe data unit-cell parameters Wiluy River Russia. SOMMAIRE text ftciteseerx 2016-01-08T08:29:13Z A low-temperature, Si-deficient variety of vesuvianite occurs in porous tetrahedral “achtarandite ” pseudomorphs consisting of hibschite, along the banks of the Wiluy River, Yakutia, Russia, the type locality of grossular and wiluite. The (H4O4)4–-for-(SiO4)4 – hydrogarnet-type substitution is evident in the vesuvianite, a substitution that allows it to be considered an analogue of hibschite. This variety of vesuvianite belongs to a new series in the vesuvianite group, as expressed by the formula X19Y13T0–5(Si2O7)4(SiO4)10–x(OH)4xW10. The filling of the X, Y, and T positions in this Si-deficient vesuvianite, where x varies from 0.67 to 2.89, is analogous to that in vesuvianite and wiluite. The Si-deficient vesuvianite is characterized by increased unit-cell parameters, a 15.688(3), c 11.860(3) Å and by lower indices of refraction, 1.691(1), 1.668(1). In the OH-region, the FTIR and Raman spectra differ sharply from those of low-temperature vesuvianite from rodingites, but are similar to the spectra of hibschite. A line near 3620 cm–1 indicates that the substitution occurs only in the isolated tetrahedra. More than 25 % of these can be substituted by (H4O4). Contents of boron up to 2.48 apfu were detected in the Si-deficient vesuvianite. The vesuvianite formed during the hydration (serpentinization and rodingitization) of early, high-temperature skarns. Text Yakutia Unknown |
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ftciteseerx |
language |
English |
topic |
Si-deficient vesuvianite hydrogarnet-type substitution boron wiluite infrared spectra Raman spectra electron- microprobe data unit-cell parameters Wiluy River Russia. SOMMAIRE |
spellingShingle |
Si-deficient vesuvianite hydrogarnet-type substitution boron wiluite infrared spectra Raman spectra electron- microprobe data unit-cell parameters Wiluy River Russia. SOMMAIRE Evgeny V. Galuskin Irina O. Galuskina FROM THE WILUY RIVER, YAKUTIA, RUSSIA |
topic_facet |
Si-deficient vesuvianite hydrogarnet-type substitution boron wiluite infrared spectra Raman spectra electron- microprobe data unit-cell parameters Wiluy River Russia. SOMMAIRE |
description |
A low-temperature, Si-deficient variety of vesuvianite occurs in porous tetrahedral “achtarandite ” pseudomorphs consisting of hibschite, along the banks of the Wiluy River, Yakutia, Russia, the type locality of grossular and wiluite. The (H4O4)4–-for-(SiO4)4 – hydrogarnet-type substitution is evident in the vesuvianite, a substitution that allows it to be considered an analogue of hibschite. This variety of vesuvianite belongs to a new series in the vesuvianite group, as expressed by the formula X19Y13T0–5(Si2O7)4(SiO4)10–x(OH)4xW10. The filling of the X, Y, and T positions in this Si-deficient vesuvianite, where x varies from 0.67 to 2.89, is analogous to that in vesuvianite and wiluite. The Si-deficient vesuvianite is characterized by increased unit-cell parameters, a 15.688(3), c 11.860(3) Å and by lower indices of refraction, 1.691(1), 1.668(1). In the OH-region, the FTIR and Raman spectra differ sharply from those of low-temperature vesuvianite from rodingites, but are similar to the spectra of hibschite. A line near 3620 cm–1 indicates that the substitution occurs only in the isolated tetrahedra. More than 25 % of these can be substituted by (H4O4). Contents of boron up to 2.48 apfu were detected in the Si-deficient vesuvianite. The vesuvianite formed during the hydration (serpentinization and rodingitization) of early, high-temperature skarns. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Evgeny V. Galuskin Irina O. Galuskina |
author_facet |
Evgeny V. Galuskin Irina O. Galuskina |
author_sort |
Evgeny V. Galuskin |
title |
FROM THE WILUY RIVER, YAKUTIA, RUSSIA |
title_short |
FROM THE WILUY RIVER, YAKUTIA, RUSSIA |
title_full |
FROM THE WILUY RIVER, YAKUTIA, RUSSIA |
title_fullStr |
FROM THE WILUY RIVER, YAKUTIA, RUSSIA |
title_full_unstemmed |
FROM THE WILUY RIVER, YAKUTIA, RUSSIA |
title_sort |
from the wiluy river, yakutia, russia |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.5633 http://rruff.info/doclib/cm/vol41/CM41_833.pdf |
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Yakutia |
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Yakutia |
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http://rruff.info/doclib/cm/vol41/CM41_833.pdf |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.5633 http://rruff.info/doclib/cm/vol41/CM41_833.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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