Publication result detail

Mineralogy and petrogenesis of a Ba-Ti-Zr-rich peralkaline dyke from Šebkovice (Czech Republic): Recognition of the most lamproitic Variscan intrusion

KRMÍČEK, L., CEMPÍREK, J., HAVLÍN, A., PŘICHYSTAL, A., HOUZAR, S., KRMÍČKOVÁ, M., GADAS, P.

Original Title

Mineralogy and petrogenesis of a Ba-Ti-Zr-rich peralkaline dyke from Šebkovice (Czech Republic): Recognition of the most lamproitic Variscan intrusion

English Title

Mineralogy and petrogenesis of a Ba-Ti-Zr-rich peralkaline dyke from Šebkovice (Czech Republic): Recognition of the most lamproitic Variscan intrusion

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

A peralkaline, ultrapotassic dyke found at Šebkovice is a mineralogically extreme member of a dyke swarm occurring along the SE border of the Moldanubian Region of the Bohemian Massif. The dyke shows a simple zoning with a very fine-grained marginal zone grading into a medium-grained central zone. It has a primary mineral assemblage of microcline and potassic amphiboles with accessory apatite and altered phlogopite. The core of the dyke and late veinlets contain unique late- to post-magmatic Ba-Ti-Zr-bearing mineral assemblages of baotite, henrymeyerite, titanite, rutile, benitoite and bazirite. In terms of a mineralogical-genetic classification, the Šebkovice dyke can be considered as a new high-silica variety of lamproite and represents a unique expression of post-collisional potassic magmatism on the south-eastern border of the Bohemian Massif. In terms of the modern classification of lamproites, the Šebkovice dyke is the first lamproite recognised in the Variscan orogenic belt.

English abstract

A peralkaline, ultrapotassic dyke found at Šebkovice is a mineralogically extreme member of a dyke swarm occurring along the SE border of the Moldanubian Region of the Bohemian Massif. The dyke shows a simple zoning with a very fine-grained marginal zone grading into a medium-grained central zone. It has a primary mineral assemblage of microcline and potassic amphiboles with accessory apatite and altered phlogopite. The core of the dyke and late veinlets contain unique late- to post-magmatic Ba-Ti-Zr-bearing mineral assemblages of baotite, henrymeyerite, titanite, rutile, benitoite and bazirite. In terms of a mineralogical-genetic classification, the Šebkovice dyke can be considered as a new high-silica variety of lamproite and represents a unique expression of post-collisional potassic magmatism on the south-eastern border of the Bohemian Massif. In terms of the modern classification of lamproites, the Šebkovice dyke is the first lamproite recognised in the Variscan orogenic belt.

Keywords

Lamproite; Potassic amphibole; Baotite; Henrymeyerite; Benitoite; Bazirite

Key words in English

Lamproite; Potassic amphibole; Baotite; Henrymeyerite; Benitoite; Bazirite

Authors

KRMÍČEK, L., CEMPÍREK, J., HAVLÍN, A., PŘICHYSTAL, A., HOUZAR, S., KRMÍČKOVÁ, M., GADAS, P.

RIV year

2011

Released

31.01.2011

Publisher

Elsevier

Location

Amsterdam

ISBN

0024-4937

Periodical

LITHOS

Volume

121

Number

1

State

Kingdom of Norway

Pages from

74

Pages to

86

Pages count

13

BibTex

@article{BUT50735,
  author="Michaela {Sluková}",
  title="Mineralogy and petrogenesis of a Ba-Ti-Zr-rich peralkaline dyke from Šebkovice (Czech Republic): Recognition of the most lamproitic Variscan intrusion",
  journal="LITHOS",
  year="2011",
  volume="121",
  number="1",
  pages="74--86",
  issn="0024-4937"
}