Preliminary study of fluid inclusions in greisens from the Saxothuringian Zone of the Bohemian massif.

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Preliminary study of fluid inclusions in greisens from the Saxothuringian Zone of the Bohemian massif.

Popis výsledku v původním jazyce

Saxothuringian Zone of the Bohemian Massif is relatively rich in occurrences of Sn-W mineralization associate with greisens. Greisens are related to the Late Variscan granite bodies (Lange et al., 1972). According to the occurrence, we can distinguish two types of greisens: 1) Greisens forming the whole apical parts of granitoid intrusions, which occur e.g. in Horní Slavkov, Krupka, or Cínovec deposits. These rocks are enriched in the incompatible elements, especially Li, Rb, Cs, F and HREE. In the horizontal cross-section through the granite bodies (e.g. Huber stock and Schnőd stock), a zonal structure can be observed, when Li-mica granite passes into aplitic mica-poor albite granite, subsequently greisenized granites and Li-mica topaz greisen and then topaz-quartz greisen (Jarchovský, 2006). Hidden bodies of this type of greisen are also expected in the bedrock of Sn-W deposits near Přebuz and Rolava (Breiter, 2006). 2) Greisens associated only with brittle tectonic structures (crack-type greisens). This type of greisen occurs mainly in the Blatná granite massif. These rocks are poorer in Li, Rb, Cs, F and HREE (Breiter, 2012). Crack-type greisens are bound to fissures with orientation N-S and NNW-SSE, less also NE-SW (Heřmanská, 2013, Urban & Malina, 2014) and the thickness of greisen bands is variable, from a few centimeters to tens of decimeters. Greisens in the Blatná massif have a zonal structure, where the greisenized granite passes into muscovite-quartz greisen and then further into topaz-quartz greisen or even quartz ultragreisen (Heřmanská, 2013).

Název v anglickém jazyce

Preliminary study of fluid inclusions in greisens from the Saxothuringian Zone of the Bohemian massif.

Popis výsledku anglicky

Saxothuringian Zone of the Bohemian Massif is relatively rich in occurrences of Sn-W mineralization associate with greisens. Greisens are related to the Late Variscan granite bodies (Lange et al., 1972). According to the occurrence, we can distinguish two types of greisens: 1) Greisens forming the whole apical parts of granitoid intrusions, which occur e.g. in Horní Slavkov, Krupka, or Cínovec deposits. These rocks are enriched in the incompatible elements, especially Li, Rb, Cs, F and HREE. In the horizontal cross-section through the granite bodies (e.g. Huber stock and Schnőd stock), a zonal structure can be observed, when Li-mica granite passes into aplitic mica-poor albite granite, subsequently greisenized granites and Li-mica topaz greisen and then topaz-quartz greisen (Jarchovský, 2006). Hidden bodies of this type of greisen are also expected in the bedrock of Sn-W deposits near Přebuz and Rolava (Breiter, 2006). 2) Greisens associated only with brittle tectonic structures (crack-type greisens). This type of greisen occurs mainly in the Blatná granite massif. These rocks are poorer in Li, Rb, Cs, F and HREE (Breiter, 2012). Crack-type greisens are bound to fissures with orientation N-S and NNW-SSE, less also NE-SW (Heřmanská, 2013, Urban & Malina, 2014) and the thickness of greisen bands is variable, from a few centimeters to tens of decimeters. Greisens in the Blatná massif have a zonal structure, where the greisenized granite passes into muscovite-quartz greisen and then further into topaz-quartz greisen or even quartz ultragreisen (Heřmanská, 2013).

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10505 - Geology

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

International Conference of Young Geologists

ISBN

978-83-933330-2-8

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

46-47

Název nakladatele

MINERALPRESS

Místo vydání

Kraków

Místo konání akce

Niedzica, Poland

Datum konání akce

5. 11. 2020

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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