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- Title
Mineralogie metamanganolitu z lokality Mísečky u Vernířovic (Česká republika).
- Authors
Zimák, Jiří; Novotný, Pavel
- Abstract
Two types of metamanganolite were found at the locality Mísečky near Verníøovice in the Hrubý Jeseník Mountains (northeastern part of the Bohemian Massif, the Czech Republic): (1) pinkish fine-grained quartz-garnet metamanganolite, and (2) grey-green chlorite-quartz-garnet metamanganolite, resembling a chloritized gneiss (so-called Desná gneis, widespread in the surroundings of Vernířovice). Manganese-rich garnet is a predominant component of both types of metamanganolite. The garnet shows a strong chemical zonality: manganese contents decrease rapidly from the core to rims in contrastto increasing iron contents. The first type of metamanganolite is known from many places in the surroundings of Verníøovice where quartz-magnetite iron ores of the BIF type were mined from the beginning of the 16th century until the beginning of the 19th century. The second type of metamanganolite is known only from the locality Mísečky and two other localities near Vernířovice. In the authors' opinion, the apparent exceptionality of this metamanganolite type is due to its imperceptible appearance in terrain.
- Subjects
HRUBY Jesenik Mountains (Czech Republic); CZECH Republic; SILESIA; IRON ores; GARNET; MANGANESE
- Publication
Bulletin Mineralogicko-Petrologickeho Oddeleni Narodniho Muzea v Praze, 2009, Vol 17, Issue 1, p69
- ISSN
1211-0329
- Publication type
Article