Borovec (Borowetz; Borowitz?), Štěpánov nad Svratkou, Bystřice nad Pernštejnem, Žďár nad Sázavou District, Vysočina Region, Moravia (Mähren; Maehren), Czech Republic
|Latitude & Longitude (WGS84):||49° 30' 36'' North , 16° 20' 33'' East|
|Latitude & Longitude (decimal):||49.51008,16.34276|
|Köppen climate type:||Dfb : Warm-summer humid continental climate|
|Name(s) in local language(s):||Kraj Vysočina|
The Cu-Ag deposit Borovec is named after a nearby village; adits and old workings are east and southeast of Borovec. There are some more occurrences of polymetallic ores in the vicinity (Borovec, Štěpánov, Koroužné, Švařec, Čtyři Dvory, Olešnička, Horní Čepí and Černovice), and the common name for all of them is the Štěpánov ore district. Štěpánov lies close to NW edge of Svratka dome in Moravicum unit, in narrow belt of Olešnice group (staurolite and garnet mica schists, phyllites, limestones, paragneisses, metabazite rocks).
There are two types of mineralization in ore district. First is Cu-Pb vein mineralization near Borovec (quartz, calcite, baryte, chalkopyrite, galena). Other primary minerals (sphalerite, pyrite, marcasite, tetraedrite) are rare. Typical are supergene Cu-minerals. Ag-content in galena is low (less than 0.01 %). Near Koroužné, Švařec, Olešniča a Horní Čepí je is Pb-Zn mineralization developed in hydrothermal veins and in metasomatic ores (quartz, calcite, ankerite, siderite, locally baryte, ore minerals: sphalerite, galena, accessories pyrite, chalkopyrite, arsenopyrite, tetraedrite, freibergite, boulangerite, stibnite etc). Secondary minerals are rare (except for "limonite"). Metasomatic ores are developed in crystalline dolomitic limestones, often with graphite and quartz. Ag-content in galena is around 0.1 %, exceptionally around 0.5 %. Age of mineralisation is considered Variscan.
71 valid minerals.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
1600 - 2500 Ma
|Paleoproterozoic intrusive and metamorphic terranes|
Age: Proterozoic (1600 - 2500 Ma)
Comments: Mixtures of metamorphic and intrusive or plutonic rocks, tracts known as crystalline, migmatitic terranes, moderately to highly metamorphosed rocks of unknown origin with or without intrusions. This classification is inherently prone to variable interpretation, as other compilers might distinguish some packages by their metamorphic or gneissic protoliths, and the associated age ranges may be more variable.
Lithology: Intrusive and metamorphic terranes
Reference: Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d. 
- Velebil, D., Kráčmar, L.: Ložisko Borovec u Štěpánova (štěpánovský revír). Minerál, 2002, roč. 10, č. 3, s. 163–181.
- Hrazdil, V., Houzar, S., Kocourková, E. and Sejkora, J. (2011): Das Erzrevier Stepánov in Westmähren (Tschechien) und seine Mineralien. Lapis 36 (9), 41-46; 62 (in German).