Publication details

Brněnský křemenný val

Title in English The Brno quartz lode
Authors

PŘICHYSTAL Antonín SLOBODNÍK Marek

Year of publication 2011
Type Article in Periodical
Magazine / Source Geologické výzkumy na Moravě a ve Slezsku
MU Faculty or unit

Faculty of Science

Citation
Field Geology and mineralogy
Keywords Brno Batholith; western granitoide zone; huge quartz vein; hydrotermal fluids
Description A large quartz vein which penetrates through granodiorite in the western zone of the Brno Batholith is described. It is composed from two bodies with different directions with a length of approximately 700 and 450 m, the thickness of vein parts varies around 2.5 m. The longer segment has E–W direction. The vein is built by massive greyish-white quartz of one generation with no traces of younger mylonitization. Its origin is spatially associated with a swarm of late Variscan amphibole diorites and porphyritic microdiorites cutting local granodiorites of the Brno Batolith. Precipitation conditions of quartz have been estimated at 170–300 degrees of Celsius and 400–1600 bar and depth at 1.5 up to 6 km. It represents the largest quartz vein not only within the Brno Batholith but even in the entire territory of south Moravia, so we propose to define it as the Brno quartz lode.
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