Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.

Locality Name:
Vítkov II, Tachov District, Plzeň Region, Czech Republic

Oldest recorded age at locality: 262
Youngest recorded age at locality: 258

mindat Locality ID: 188816
mindat URL: http://www.mindat.org/loc-188816.html

Tectonic Settings:

Total number of sublocalities beneath "Vítkov II, Tachov District, Plzeň Region, Czech Republic": 0
Total number of bottom-level sublocalities: 0

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
	This mineral's age has not yet been recorded.

Autunite	Brannerite	Calcite	Chalcopyrite	Corundum	None	Phosphuranylite	Pyrite	Quartz	Rocksalt
Sphalerite	Tetradymite	Zircon

Autunite ()*	Becquerelite ()*	Brannerite ()*	Calcite ()*	Chalcopyrite ()*
Clausthalite ()*	Coffinite ()*	Curite ()*	Galena ()*	Hematite ()*
Nevskite ()*	Uranophane-β ()*	Phosphuranylite ()*	Pyrite ()*	Quartz ()*
Sphalerite ()*	Uranophane-α ()*

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Bi C Ca Cu Fe H K O P Pb S Se Si Ti U Zn

Elements from minerals reported directly at this locality: Bi C Ca Cu Fe H K O P Pb S Se Si Ti U Zn

Structural Groups for minerals in this locality:
Autunite Brannerite Calcite Chalcopyrite Corundum None Phosphuranylite Pyrite Quartz Rocksalt
Sphalerite Tetradymite Zircon

17 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Autunite ()*	Autunite	Ca(UO₂)₂(PO₄)₂·10-12H₂O	262	258	1272
Becquerelite ()*	None	Ca(UO₂)₆O₄(OH)₆·8H₂O	262	258	92
Brannerite ()*	Brannerite	UTi₂O₆	262	258	248
Calcite ()*	Calcite	Ca(CO₃)	262	258	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	262	258	27198
Clausthalite ()*	Rocksalt	PbSe	262	258	281
Coffinite ()*	Zircon	U(SiO₄)·nH₂O	262	258	566
Curite ()*	None	Pb_3+x[(UO₂)₄O_4+x(OH)_3-x]₂·2H₂O	262	258	51
Galena ()*	Rocksalt	PbS	262	258	24243
Hematite ()*	Corundum	Fe₂O₃	262	258	14640
Nevskite ()*	Tetradymite	Bi(Se,S)	262	258	6
Uranophane-β ()*	None	Ca(UO₂)₂(SiO₃OH)₂·5H₂O	262	258	144
Phosphuranylite ()*	Phosphuranylite	KCa(H₃O)₃(UO₂)₇(PO₄)₄O₄·8H₂O	262	258	182
Pyrite ()*	Pyrite	FeS₂	262	258	39462
Quartz ()*	Quartz	SiO₂	262	258	61156
Sphalerite ()*	Sphalerite	ZnS	262	258	21482
Uranophane-α ()*	None	Ca(UO₂)₂(SiO₃OH)₂·5H₂O	262	258	890

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Giersdorf_00000830	The Vítkov II uranium deposit was mined from 1961 to 1988 and was ranked among medium-size uranium deposits in the Bohemian Massif. The total mine production of low-grade uranium ore (0.124wt.% U)was 3973 t U. This uranium deposit occurs in the central tectonic block of the Bor pluton. The deposit is evolved between two shear NNE–SSW zones. The shear zone 0–30 in the east is up to 5–7 m in thickness. Its infill consists of highly crushed altered rocks (albitised biotite granites and lamprophyres), quartz and carbonates. Rich accumulations of U-minerals often occur in its vicinity. The Vítkov shear zone (southern part of the Eastern shear zone evolved in area of the Zadní Chodov deposit) forms the western boundary of the deposit. It is very conspicuous and its thickness reaches several tens of meters. It is infilled by crushed and altered country rocks. The pennate NW–SE dislocations situated between the two shear zones are infilled by dyke biotite and two-mica granites and relatively rarely aplites. The occurrence of uranium mineralisation is controlled by NW-SE and NNW-SSE trending faults,which forma dense network of fractures and joints. The surrounding biotite granites are usually intensely altered. The ore bodies comprise U-minerals (coffinite, uraninite, brannerite) finely disseminated in the surrounding altered granitoids.

Age ID

Locality Notes

Giersdorf_00000830

The Vítkov II uranium deposit was mined from 1961 to 1988 and was ranked among medium-size uranium deposits in the Bohemian Massif. The total mine production of low-grade uranium ore (0.124wt.% U)was 3973 t U. This uranium deposit occurs in the central tectonic block of the Bor pluton. The deposit is evolved between two shear NNE–SSW zones. The shear zone 0–30 in the east is up to 5–7 m in thickness. Its infill consists of highly crushed altered rocks (albitised biotite granites and lamprophyres), quartz and carbonates. Rich accumulations of U-minerals often occur in its vicinity. The Vítkov shear zone (southern part of the Eastern shear zone evolved in area of the Zadní Chodov deposit) forms the western boundary of the deposit. It is very conspicuous and its thickness reaches several tens of meters. It is infilled by crushed and altered country rocks. The pennate NW–SE dislocations situated between the two shear zones are infilled by dyke biotite and two-mica granites and relatively rarely aplites. The occurrence of uranium mineralisation is controlled by NW-SE and NNW-SSE trending faults,which forma dense network of fractures and joints. The surrounding biotite granites are usually intensely altered. The ore bodies comprise U-minerals (coffinite, uraninite, brannerite) finely disseminated in the surrounding altered granitoids.

1 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	Giersdorf_00000830	262	258	260±2	U-Pb	Age of uranium mineralization during the main ore stage of the Variscan event		uraninite				Uraninite	Brannerite, Coffinite, Uraninite	U	188816	Vítkov II, Tachov District, Plzeň Region, Czech Republic	Vítkov II Uranium Deposit	René (2017)	10.1016/j.oregeorev.2016.09.033	OGR81_188	Age of uranium mineralization

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...