Hydroxycalciopyrochlore from a regionally metamorphic marble at Bližná, Southwestern Czech Republic

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F17%3A00467978" target="_blank" >RIV/67985831:_____/17:00467978 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1127/njma/2016/0014" target="_blank" >http://dx.doi.org/10.1127/njma/2016/0014</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1127/njma/2016/0014" target="_blank" >10.1127/njma/2016/0014</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hydroxycalciopyrochlore from a regionally metamorphic marble at Bližná, Southwestern Czech Republic

Popis výsledku v původním jazyce

We describe an unusual occurrence of hydroxycalciopyrochlore in marble exposed in the Václav graphite mine at Bližná, southern Czech Republic. Roundish grains attain up to 3 cm, and euhedral crystals are up to 2 mm across. An empirical formula, calculated on the basis two B atoms per formula unit (pfu), is: (Ca0.48Na0.02Mg0.06Mn0.01Y0.06.SIGMA.REEs0.27Th0.27U0.01).SIGMA.1.12 (Nb1.06Ti0.79Fe0.14W0.01).SIGMA.2 (O4.96OH1.04).SIGMA.6(OH)0.81•H2O. The associated minerals, in addition to the rock-forming minerals calcite, phlogopite and edenite, include ilmenite, magnetite, euxenite, uranoan thorite, rutile, zircon, molybdenite, chalcopyrite, galena, sphalerite, pyrite, pyrrhotite, barite and apatite. This is the first occurrence of a pyrochlore-group mineral in regionally metamorphosed marble. The assemblage is considered to represent a metamorphosed carbonate-dominated sediment containing evaporitic horizons and volcanic detritus. Now give the reader an explanation, what makes it carbonatite-like?

Název v anglickém jazyce

Hydroxycalciopyrochlore from a regionally metamorphic marble at Bližná, Southwestern Czech Republic

Popis výsledku anglicky

We describe an unusual occurrence of hydroxycalciopyrochlore in marble exposed in the Václav graphite mine at Bližná, southern Czech Republic. Roundish grains attain up to 3 cm, and euhedral crystals are up to 2 mm across. An empirical formula, calculated on the basis two B atoms per formula unit (pfu), is: (Ca0.48Na0.02Mg0.06Mn0.01Y0.06.SIGMA.REEs0.27Th0.27U0.01).SIGMA.1.12 (Nb1.06Ti0.79Fe0.14W0.01).SIGMA.2 (O4.96OH1.04).SIGMA.6(OH)0.81•H2O. The associated minerals, in addition to the rock-forming minerals calcite, phlogopite and edenite, include ilmenite, magnetite, euxenite, uranoan thorite, rutile, zircon, molybdenite, chalcopyrite, galena, sphalerite, pyrite, pyrrhotite, barite and apatite. This is the first occurrence of a pyrochlore-group mineral in regionally metamorphosed marble. The assemblage is considered to represent a metamorphosed carbonate-dominated sediment containing evaporitic horizons and volcanic detritus. Now give the reader an explanation, what makes it carbonatite-like?

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10504 - Mineralogy

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Neues Jahrbuch für Mineralogie. Abhandlungen

ISSN

0077-7757

e-ISSN

—

Svazek periodika

194

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

11

Strana od-do

49-59

Kód UT WoS článku

000395225300005

EID výsledku v databázi Scopus

2-s2.0-85009483636