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Valeč (Waltsch), Doupov (Duppau), Karlovy Vary (Karlsbad; Carlsbad), Karlovy Vary Region, Czech Republic

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Latitude & Longitude (WGS84): 50° 11' 28'' North , 13° 14' 17'' East
Latitude & Longitude (decimal): 50.19116,13.23814
GeoHash:G#: u2cmt1p8w
Other regions containing this locality:Bohemia (Böhmen; Boehmen), Czech Republic
Köppen climate type:Cfb : Temperate oceanic climate
Name(s) in local language(s):Valeč


Famous locality for Opal-AN (Hyalite) exploited from 19th century. The specimens from this locality are part of many world museum collections.
The best specimens of botryoidal Opal-AN aggregates are from free boulders of leucitic tephrite surrounded by clay.
The site was turned to military area after WW II. The Czechoslovak and then Soviet Army were discouraging from mineral collecting. Nowadays (2009) the site is still military area but access during the day and outside planned military exercises is possible. The site is also a natural preserve. Currently best place to collect is the summit plateau of Jedliny hill. Former sites exploited were on the hills of Doupovské hory N, NW and W from Valeč: Filíř (Pilíř), Číhaná, Kopáčov, Šibeniční vrch, Malý a Velký Hlavákov (Hlavákovský vrch).


Mineral List


3 valid minerals.

Regional Geology

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

Tertiary
2.588 - 66 Ma



ID: 2601686

Age: Cenozoic (2.588 - 66 Ma)

Description: effusive rock: lava

Comments: Also some occurrences with trachyte, phonolite, latite

Lithology: Alkali basalt, basanite, tephrite, nephelinite, tholeiitic basalt, olivine basalt, andesite

Reference: Toloczyki, M., P. Trurnit, A. Voges, H. Wittekindt, A. Zitzmann. Geological Map of Germany 1:M. Bundesanstalt für Geowissenschaften und Rohstoffe. [94]

Neogene - Paleogene
2.588 - 66 Ma



ID: 3151639
Palaeogene volcanic

Age: Cenozoic (2.588 - 66 Ma)

Lithology: Major:{volcanic alkaline group}, Minor{tuff group,tuffite group}

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

Tertiary
2.588 - 66 Ma



ID: 3187708
Cenozoic volcanic rocks

Age: Cenozoic (2.588 - 66 Ma)

Lithology: Flow(s); intermediate volcanic rocks; phonolite

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

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Mach Z. Hyalit z Valče. Minerál 1994. 2(3):114.

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