Standard

Influences of extraframework cations on features of natrolite group zeolites : The crystal structure of partly dehydrated K-containing paranatrolite. / Seryotkin, Yurii; Bakakin, Vladimir.

In: Zeitschrift fur Kristallographie, Vol. 230, No. 4, 01.04.2015, p. 233-242.

Research output: Contribution to journalArticlepeer-review

Harvard

APA

Vancouver

Author

BibTeX

@article{268730449e144d029e9539d8b15e7f1b,
title = "Influences of extraframework cations on features of natrolite group zeolites: The crystal structure of partly dehydrated K-containing paranatrolite",
abstract = "The partly dehydrated paranatrolite from the Khibiny massif, Russia, Na 1.88K0.22Ca0.06 [Al2.24Si2.76O10]·2.5H2O, has a space group F1d1 and the unit cell parameters a = 18.6586(5), b = 18.6536(5), c = 6.64119(13) A, β = 90.199(2)°, and Z = 8. The dominant Na+ cations are located nearby the sodium positions in the natrolite structure. The potassium cations occupy two individual positions. Their different occupancies define the retention of the monoclinic distortion of the structure. H2O molecules statistically occupy eight positions, six being generated with a triple splitting of two positions. Three kinds of main local cation-water assemblages were distinguished, two being similar to the assemblages in the initial high-water paranatrolite. The comparison with the gonnardite and paranatrolite structures determined previously was carried out. Common structural characteristics of natrolite group minerals are suggested from the local water-cation assemblages.",
keywords = "Crystal structure, Gonnardite, Natrolite group, Paranatrolite, Water-cation assemblage",
author = "Yurii Seryotkin and Vladimir Bakakin",
year = "2015",
month = apr,
day = "1",
doi = "10.1515/zkri-2014-1807",
language = "English",
volume = "230",
pages = "233--242",
journal = "Zeitschrift fur Kristallographie",
issn = "0044-2968",
publisher = "Walter de Gruyter GmbH",
number = "4",

}

RIS

TY - JOUR

T1 - Influences of extraframework cations on features of natrolite group zeolites

T2 - The crystal structure of partly dehydrated K-containing paranatrolite

AU - Seryotkin, Yurii

AU - Bakakin, Vladimir

PY - 2015/4/1

Y1 - 2015/4/1

N2 - The partly dehydrated paranatrolite from the Khibiny massif, Russia, Na 1.88K0.22Ca0.06 [Al2.24Si2.76O10]·2.5H2O, has a space group F1d1 and the unit cell parameters a = 18.6586(5), b = 18.6536(5), c = 6.64119(13) A, β = 90.199(2)°, and Z = 8. The dominant Na+ cations are located nearby the sodium positions in the natrolite structure. The potassium cations occupy two individual positions. Their different occupancies define the retention of the monoclinic distortion of the structure. H2O molecules statistically occupy eight positions, six being generated with a triple splitting of two positions. Three kinds of main local cation-water assemblages were distinguished, two being similar to the assemblages in the initial high-water paranatrolite. The comparison with the gonnardite and paranatrolite structures determined previously was carried out. Common structural characteristics of natrolite group minerals are suggested from the local water-cation assemblages.

AB - The partly dehydrated paranatrolite from the Khibiny massif, Russia, Na 1.88K0.22Ca0.06 [Al2.24Si2.76O10]·2.5H2O, has a space group F1d1 and the unit cell parameters a = 18.6586(5), b = 18.6536(5), c = 6.64119(13) A, β = 90.199(2)°, and Z = 8. The dominant Na+ cations are located nearby the sodium positions in the natrolite structure. The potassium cations occupy two individual positions. Their different occupancies define the retention of the monoclinic distortion of the structure. H2O molecules statistically occupy eight positions, six being generated with a triple splitting of two positions. Three kinds of main local cation-water assemblages were distinguished, two being similar to the assemblages in the initial high-water paranatrolite. The comparison with the gonnardite and paranatrolite structures determined previously was carried out. Common structural characteristics of natrolite group minerals are suggested from the local water-cation assemblages.

KW - Crystal structure

KW - Gonnardite

KW - Natrolite group

KW - Paranatrolite

KW - Water-cation assemblage

UR - http://www.scopus.com/inward/record.url?scp=84929012721&partnerID=8YFLogxK

U2 - 10.1515/zkri-2014-1807

DO - 10.1515/zkri-2014-1807

M3 - Article

AN - SCOPUS:84929012721

VL - 230

SP - 233

EP - 242

JO - Zeitschrift fur Kristallographie

JF - Zeitschrift fur Kristallographie

SN - 0044-2968

IS - 4

ER -

ID: 25761780