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:
Lomnice, Sokolov District, Karlovy Vary Region, Czech Republic

Oldest recorded age at locality: 23
Youngest recorded age at locality: 0

mindat Locality ID: 22383
mindat URL: http://www.mindat.org/loc-22383.html

Tectonic Settings:

Total number of sublocalities beneath "Lomnice, Sokolov District, Karlovy Vary 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.

Arsenopyrite	Calcite	Fluorite	Gypsum	Humboldtine	Marcasite	Nickeline	None	Orpiment	Oxalate
Pyrite	Quartz	Spinel	Sulphur

Ankerite ()*	Arsenopyrite ()*	Calcite ()*	Dolomite ()*	Fluorite ()*
Greigite ()*	Gypsum ()*	Humboldtine ()*	Kutnohorite ()*	Marcasite ()*
Orpiment ()*	Pyrite ()*	Pyrrhotite ()*	Quartz ()*	Realgar ()*
Scorodite ()*	Siderite ()*	Smythite ()*	Sulphur ()*

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: As C Ca F Fe H Mg Mn Ni O S Si

Elements from minerals reported directly at this locality: As C Ca F Fe H Mg Mn Ni O S Si

Structural Groups for minerals in this locality:
Arsenopyrite Calcite Fluorite Gypsum Humboldtine Marcasite Nickeline None Orpiment Oxalate
Pyrite Quartz Spinel Sulphur

19 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	# of localities containing mineral
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	5.3	3092
Arsenopyrite ()*	Arsenopyrite	FeAsS	5.3	9052
Calcite ()*	Calcite	Ca(CO₃)	5.3	27770
Dolomite ()*	None	CaMg(CO₃)₂	5.3	9895
Fluorite ()*	Fluorite	CaF₂	5.3	9617
Greigite ()*	Spinel	Fe²⁺Fe³⁺₂S₄	5.3	62
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	5.3	6890
Humboldtine ()*	Humboldtine Oxalate	Fe²⁺(C₂O₄)·2H₂O	0	27
Kutnohorite ()*	None	CaMn²⁺(CO₃)₂	5.3	234
Marcasite ()*	Marcasite	FeS₂	0	5674
Orpiment ()*	Orpiment	As₂S₃	0	511
Pyrite ()*	Pyrite	FeS₂	0	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	5.3	9056
Quartz ()*	Quartz	SiO₂	5.3	61156
Realgar ()*	None	AsS	0	712
Scorodite ()*	None	Fe³⁺(AsO₄)·2H₂O	5.3	1153
Siderite ()*	Calcite	Fe(CO₃)	5.3	6417
Smythite ()*	None	(Fe,Ni)_3+xS₄ (x ≈ 0-0.3)	5.3	77
Sulphur ()*	Sulphur	S	5.3	2045

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Michelle_830	The abandoned Lomnice pit, which was mined from 1983 to 1994, is situated in a shallow fault block in the marginal part of the lignite-bearing basin. During the Pliocene to Pleistocene compression phase, the Lomnice area was strongly folded and faulted, and the uplifted rocks have consequently undergone intensive fracturing and weathering
Michelle_832	Antonín lignite seam is extracted from the Lomnice pit of the Sokolov Basin.
Michelle_835	Sulfide oxidation and acid leaching of lignite have led to an increased mobility of ions and precipitation of humboldtine, and younger generations of pyrite and marcasite along the dislocation faces. Exposure to the atmosphere during and after the mining period resulted in the precipitation of a variety of minerals, including melanterite, rozenite, realgar, orpiment, and various ochreous deposits. Drainage effluents in the central mine-water reservoir have pH values between 2.3 and 2.9. Here, concentrations of SO4 2– and total Fe that range up to 3800 and 900 ppm, respectively, have led to the recent growth of jarosite-goethite nodules

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Age Interpret	Prioritized?	Age from other Locality	Minerals explicitely stated as having this age	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
Michelle_832	23	5.3	Miocene	Age of lignite		Yes		35644	Sokolov District, Karlovy Vary Region, Czech Republic	Antonín lignite seam	Murad and Rojík (2003)	10.2138/am-2003-11-1234	AM88_1915	Age of lignite deposit in the Sokolov Basin.
Michelle_830	5.3	0.01	Pliocene - Pleistocene	Age of compression phase				22383	Lomnice, Sokolov District, Karlovy Vary Region, Czech Republic	Lomnice pit	Murad and Rojík (2003)	10.2138/am-2003-11-1234	AM88_1915	During the Pliocene to Pleistocene compression phase, the Lomnice area was strongly folded and faulted, and the uplifted rocks have consequently undergone intensive fracturing and weathering
Michelle_835	0	0	Anthropocene	Age of anthropogenic acivity	high		Ferrihydrite, Humboldtine, Marcasite, Melanterite, Orpiment, Pyrite, Realgar, Rozenite, Schwertmannite	22383	Lomnice, Sokolov District, Karlovy Vary Region, Czech Republic	Lomnice pit	Murad and Rojík (2003)	10.2138/am-2003-11-1234	AM88_1915	Age of mining and post-mining activity. Sulfide oxidation and acid leaching of lignite resulted in the precipitation of a variety of minerals.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...