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Borovec (Borowetz; Borowitz?), Štěpánov nad Svratkou, Vysočina Region, Moravia (Mähren; Maehren), Czech Republic
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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.

Mineral List

Acanthite
Actinolite
Allophane
Amphibole Supergroup
Andalusite
Anglesite
Ankerite
Aragonite
Arsenopyrite
Auricupride
Azurite
Baryte
Bornite
Boulangerite
Bournonite
Brochantite
Calcite
Cerussite
Cervantite
Chalcocite
Chalcophyllite
Chalcopyrite
'Chlorite Group'
Chrysocolla
Copper
Covellite
Cuprite
Delafossite
Djurleite
Dolomite
Epidote
'Evansite'
Freibergite
Galena
'Garnet'
Goethite
Gold
Graphite
Greenockite
Gypsum
Hematite
Hemimorphite
Ilmenite
Jarosite
Langite
'Limonite'
Magnetite
Malachite
Marcasite
Mimetite
Olivenite
Opal
Orthoclase
Plumbojarosite
Polybasite
Posnjakite
Pyrargyrite
Pyrite
Pyromorphite
Pyrrhotite
Quartz
var: Chalcedony
var: Rock Crystal
var: Smoky Quartz
Siderite
Silver
Smithsonite
Sphalerite
Stibnite
Sulphur
Tenorite
Tetrahedrite
'Tourmaline'
Tremolite
Tyrolite
Valentinite
Vanadinite
'Wad'
Zoisite


79 entries listed. 70 valid minerals.

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References

- Houzar, S., Malý, K.: Přehled mineralogie, ložiskových poměrů a historie štěpánovského rudního revíru na západní Moravě. Acta Musei Moraviae, Scientiae geologicae, 2002, roč. 87, s. 5-59.
- 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).

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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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