Drill hole CS-1 penetrating the Cínovec/Zinnwald granite cupola (Czech Republic): an A-type granite with important hydrothermal mineralization
2016
Abstrakt
The Sn-W deposit at Cínovec and Zinnwald (Eastern Krušné hory/Erzgebirge) is associated with a granite cupola of Late Variscan age intruded into the Teplice rhyolite. The 1596 m deep CS-1 drilling was completed in 1961-1963 at Cínovec in the center of the granite cupola.
This paper reviews earlier and new petrological and geochemical data revealed by the CS-1 drill core. The drill-log showed that the upper granite zone of the cupola consists of lepidolite-albite granite grading continuously into zinnwaldite granite in fine-grained and medium-grained variants.
Below 730 m depth, medium-grained, porphyritic lithian annite granite enclosing small bodies of porphyritic lithian annite microgranite was observed.