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:
Chlum Hill, Sepekov, Tábor District, South Bohemian Region, Czech Republic

Oldest recorded age at locality: 337.6
Youngest recorded age at locality: 332

mindat Locality ID: 73027
mindat URL: http://www.mindat.org/loc-73027.html

Tectonic Settings:

Total number of sublocalities beneath "Chlum Hill, Sepekov, Tábor District, South Bohemian 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.

Beryl	Clay	Corundum	Mica	None	Not in a structural group	Quartz	Spinel

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: Al Fe H K Mg O Si Ti

Elements from minerals reported directly at this locality: Al Fe H K Mg O Si Ti

Structural Groups for minerals in this locality:
Beryl Clay Corundum Mica None Not in a structural group Quartz Spinel

8 IMA Minerals at location:

Cordierite ()*	Corundum ()*	Hercynite ()*	Ilmenite ()*	Muscovite ()*
Phlogopite ()*	Quartz ()*	Sillimanite ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈	337.6	332	1008
Corundum ()*	Corundum	Al₂O₃	337.6	332	1797
Hercynite ()*	Spinel	Fe²⁺Al₂O₄	337.6	332	407
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	337.6	332	5433
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	337.6	332	17380
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	337.6	332	2273
Quartz ()*	Quartz	SiO₂	337.6	332	61156
Sillimanite ()*	Not in a structural group	Al₂SiO₅	337.6	332	1516

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	Sample Num	Age from other Locality	Dated Mineral	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID	Age Notes
JCGS48_70_0001	337.6	335.6	336.6±1.0	concordia			Ta-10	Yes		257258	Dražice, Tábor District, South Bohemian Region, Czech Republic	Drazice	Janousek and Gerdes (2003)	JCGS48_70	concordia of 3 fractions (zircon ,zircon, rutile) from the Tabor intrusion
JCGS48_70_0002	337.1	335.5	336.3±0.8	Pb-Pb		rutile		Yes	Rutile	257258	Dražice, Tábor District, South Bohemian Region, Czech Republic	Drazice	Janousek and Gerdes (2003)	JCGS48_70
JCGS48_70_0003	334	332	333±1	U-Pb	likely represents Pb loss	zircon		Yes	Zircon	257258	Dražice, Tábor District, South Bohemian Region, Czech Republic	Drazice	Janousek and Gerdes (2003)	JCGS48_70

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...