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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26232511%3A_____%2F20%3AN0000054" target="_blank" >RIV/26232511:_____/20:N0000054 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language description

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).

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10505 - Geology

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

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

Article name in the collection

International Conference of Young Geologists

ISBN

978-83-933330-2-8

ISSN

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e-ISSN

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Number of pages

2

Pages from-to

46-47

Publisher name

MINERALPRESS

Place of publication

Kraków

Event location

Niedzica, Poland

Event date

Nov 5, 2020

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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