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:
Heilmann Quarry, Kirchberg, Zwickau, Saxony, Germany

Oldest recorded age at locality: 327
Youngest recorded age at locality: 315

mindat Locality ID: 256394
mindat URL: http://www.mindat.org/loc-256394.html

Tectonic Settings:

Total number of sublocalities beneath "Heilmann Quarry, Kirchberg, Zwickau, Saxony, Germany": 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.

Meta-autunite	None	Tourmaline

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 B Ca Fe H Na O P Si U

Elements from minerals reported directly at this locality: Al B Ca Fe H Na O P Si U

Structural Groups for minerals in this locality:
Meta-autunite None Tourmaline

2 IMA Minerals at location:

Meta-autunite ()*	Schorl ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Meta-autunite ()*	Meta-autunite	Ca(UO₂)₂(PO₄)₂·6H₂O	327	315	0		388
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	327	315	0		2705

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Giersdorf_00000648	Biotite-type Granites are grouped together and represented by multiple occurences all within the Erzgebirge region of Germany, and are given a singular age to represent them as a whole.

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_00000648	327	315	321±6	U-Th-Pb	Age window of the samples on this paper fit into the range of 315-325 Ma, supporting a magmatic origin for the uraninite in the granite bodies as suggested by textural relationships. The uraninite grains studied are expressed to have had little alteration		uraninite			Yes	Uraninite	Uraninite		287390	Kirchberg, Zwickau, Saxony, Germany	Kirchberg Biotite Granite	Förster (1999)	10.1180/002646199548466	MM63_239	Chemically derived uraninite ages for a group of biotite-type granites, consisting of Kirchberg, Burkersdorf, Schlema-Alberoda, Beierfeld, and Niederbobritzsch granites. The age is given for the entire group as a whole.

All locality data graciously provided by mindat.org

All age data...