Journal of

GEOsciences

  (Formerly Journal of the Czech Geological Society)

Original Paper

Kodymová, Miroslav Štemprok

Typology and internal structure of zircons from the granites of the Krusne hory-Erzgebirge batholith and associated rhyolite and granite porphyry (Czech Republic)

Journal of the Czech Geological Society, volume 38 (1993), issue 3-4, 149 - 164

Dimensions, typology and internal structure of zircon crystals was studied on 5 samples of granites from the Western pluton of the Krušné hory/Erzgebirge granite batholith, a sample of granite porphyry and a sample of the Teplice rhyolite from the Eastern pluton area. Zircons indicate a considerable genetic unity of the rocks examined. According to zircon typology the granite of the Older Intrusive Complex belongs to the granites of mixed crustal and mantle origin whereas the granites of the Younger Intrusive Complex to the granites of crustal origin. Five zones of growth were determined in the zircon crystals which are unevenly distributed in different types of rocks examined. There is no correlation based on zircons between the “granite porphyries” in the western pluton area (granites from Doubí) and the granite porphyry from the eastern part of the batholith.