Julgoldite-(Fe2+) and Fe-rich prehnite from pectolite veins at Kostalov quarry, Czech Republic: Mössbauer, WDS and PXRD study
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F25%3A73633678" target="_blank" >RIV/61989592:15640/25:73633678 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.jgeosci.org/detail/jgeosci.403" target="_blank" >https://www.jgeosci.org/detail/jgeosci.403</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3190/jgeosci.403" target="_blank" >10.3190/jgeosci.403</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Julgoldite-(Fe2+) and Fe-rich prehnite from pectolite veins at Kostalov quarry, Czech Republic: Mössbauer, WDS and PXRD study
Popis výsledku v původním jazyce
Julgoldite-(Fe2+) and Fe-rich prehnite were found in pectolite veins filling fissures in basaltic andesite at the Kost'alov quarry near Semily (Liberec region, Czech Republic). Empirical formula of julgoldite-(Fe2+) based on EPMA and M & ouml;ssbauer spectroscopy considering so-called intervalence electron hopping in the structure may be written as Ca-2.01(Fe0.562+Fe0.252.5+Mg0.14)(Sigma 0.95)(Fe1.193+Fe0.252.5+Al0.57)(Sigma 2.01)Si3O9.94(OH)(4.06). Refined unit-cell parameters for monoclinic space group A2/m are a = 8.927(3) & Aring;, b = 6.080(2) & Aring;, c = 19.428(7) & Aring;, beta = 97.59(4)degrees, V = 1045.2(8) & Aring;(3). Prehnite with the empirical formula Ca-2.01(Al0.53Fe0.45)(Sigma 0.98)(AlSi3O10)(OH)(1.93)F-0.02 is located approximately in the middle of the prehnite-ferriprehnite series. M & ouml;ssbauer spectroscopy indicated that all Fe is present in the trivalent form. The increased Fe content is also reflected in this unit-cell: a = 18.617(5) & Aring;, b = 5.502(2) & Aring;, c = 4.672(2) & Aring;, V = 478.5(2) & Aring;(3). Pectolite is the main mineral in the mineral assemblage. Its unit-cell parameters refined from powder X-ray diffraction are a = 7.9848(14) & Aring;, b = 7.0391(19) & Aring;, c = 7.0243(11) & Aring;, alpha = 90.53(2)degrees, beta = 95.19(1)degrees, gamma = 102.48(2)degrees and V 383.7(1) & Aring;(3). Chemical composition of pectolite corresponds to ideal stoichiometry and give the empirical formula Na-1.00(Ca2.02Mn0.01Fe0.01)(Sigma 2.04)Si3O8(OH1.04)F-0.02. Other minor minerals of the association are hematite, pyrite and the youngest calcite. The source of mineralization of the circulating fluids can be found in alteration of rock components (feldspars, olivine, glass); however, external input from the surrounding calcareous sediments cannot be excluded.
Název v anglickém jazyce
Julgoldite-(Fe2+) and Fe-rich prehnite from pectolite veins at Kostalov quarry, Czech Republic: Mössbauer, WDS and PXRD study
Popis výsledku anglicky
Julgoldite-(Fe2+) and Fe-rich prehnite were found in pectolite veins filling fissures in basaltic andesite at the Kost'alov quarry near Semily (Liberec region, Czech Republic). Empirical formula of julgoldite-(Fe2+) based on EPMA and M & ouml;ssbauer spectroscopy considering so-called intervalence electron hopping in the structure may be written as Ca-2.01(Fe0.562+Fe0.252.5+Mg0.14)(Sigma 0.95)(Fe1.193+Fe0.252.5+Al0.57)(Sigma 2.01)Si3O9.94(OH)(4.06). Refined unit-cell parameters for monoclinic space group A2/m are a = 8.927(3) & Aring;, b = 6.080(2) & Aring;, c = 19.428(7) & Aring;, beta = 97.59(4)degrees, V = 1045.2(8) & Aring;(3). Prehnite with the empirical formula Ca-2.01(Al0.53Fe0.45)(Sigma 0.98)(AlSi3O10)(OH)(1.93)F-0.02 is located approximately in the middle of the prehnite-ferriprehnite series. M & ouml;ssbauer spectroscopy indicated that all Fe is present in the trivalent form. The increased Fe content is also reflected in this unit-cell: a = 18.617(5) & Aring;, b = 5.502(2) & Aring;, c = 4.672(2) & Aring;, V = 478.5(2) & Aring;(3). Pectolite is the main mineral in the mineral assemblage. Its unit-cell parameters refined from powder X-ray diffraction are a = 7.9848(14) & Aring;, b = 7.0391(19) & Aring;, c = 7.0243(11) & Aring;, alpha = 90.53(2)degrees, beta = 95.19(1)degrees, gamma = 102.48(2)degrees and V 383.7(1) & Aring;(3). Chemical composition of pectolite corresponds to ideal stoichiometry and give the empirical formula Na-1.00(Ca2.02Mn0.01Fe0.01)(Sigma 2.04)Si3O8(OH1.04)F-0.02. Other minor minerals of the association are hematite, pyrite and the youngest calcite. The source of mineralization of the circulating fluids can be found in alteration of rock components (feldspars, olivine, glass); however, external input from the surrounding calcareous sediments cannot be excluded.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10504 - Mineralogy
Návaznosti výsledku
Projekt
—
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2025
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of Geosciences
ISSN
1802-6222
e-ISSN
1803-1943
Svazek periodika
70
Číslo periodika v rámci svazku
1
Stát vydavatele periodika
CZ - Česká republika
Počet stran výsledku
9
Strana od-do
43-51
Kód UT WoS článku
001614643400001
EID výsledku v databázi Scopus
2-s2.0-105020908388