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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
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).

Alternative Label Names

This is a list of additional names that have been recorded for mineral labels associated with this locality in the minID database. This may include previous versions of the locality name hierarchy from mindat.org, data entry errors, and it may also include unconfirmed sublocality names or other names that can only be matched to this level.

Valec, Doupov, Karlovy Vary Region, Bohemia, Czech Republic
Valeč (Waltsch), Doupov (Duppau), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Regions containing this locality

Bohemia (Böhmen; Boehmen), Czech Republic

Region (Historical) - 1,341 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


3 valid minerals.

Detailed Mineral List:

Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: various added photos
Fluorapatite
Formula: Ca5(PO4)3F
Reference: http://www.mineralos.cz/lokality/valec/uvalec.htm
Fluorapatite var: Carbonate-rich Fluorapatite
Formula: Ca5(PO4,CO3)3(F,O)
Reference: various added photos
Opal
Formula: SiO2 · nH2O
Reference: No reference listed
Opal var: Opal-AN
Formula: SiO2 · nH2O
Reference: No reference listed

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Opal4.DA.10SiO2 · nH2O
var: Opal-AN4.DA.10SiO2 · nH2O
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
var: Carbonate-rich Fluorapatite8.BN.05Ca5(PO4,CO3)3(F,O)
Group 9 - Silicates
'Augite'9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6

List of minerals arranged by Dana 8th Edition classification

Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
var: Carbonate-rich Fluorapatite41.8.1.4Ca5(PO4,CO3)3(F,O)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Augite65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Unclassified Minerals, Rocks, etc.
var: Opal-AN-SiO2 · nH2O

List of minerals for each chemical element

HHydrogen
H OpalSiO2 · nH2O
H Opal (var: Opal-AN)SiO2 · nH2O
CCarbon
C Fluorapatite (var: Carbonate-rich Fluorapatite)Ca5(PO4,CO3)3(F,O)
OOxygen
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O Fluorapatite (var: Carbonate-rich Fluorapatite)Ca5(PO4,CO3)3(F,O)
O FluorapatiteCa5(PO4)3F
O OpalSiO2 · nH2O
O Opal (var: Opal-AN)SiO2 · nH2O
FFluorine
F Fluorapatite (var: Carbonate-rich Fluorapatite)Ca5(PO4,CO3)3(F,O)
F FluorapatiteCa5(PO4)3F
MgMagnesium
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
SiSilicon
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si OpalSiO2 · nH2O
Si Opal (var: Opal-AN)SiO2 · nH2O
PPhosphorus
P Fluorapatite (var: Carbonate-rich Fluorapatite)Ca5(PO4,CO3)3(F,O)
P FluorapatiteCa5(PO4)3F
CaCalcium
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca Fluorapatite (var: Carbonate-rich Fluorapatite)Ca5(PO4,CO3)3(F,O)
Ca FluorapatiteCa5(PO4)3F
FeIron
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6

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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Mach Z. Hyalit z Valče. Minerál 1994. 2(3):114.


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