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:
Hohentwiel, Singen, Hegau, Baden-Württemberg, Germany

Oldest recorded age at locality: 15.7
Youngest recorded age at locality: 15.7

mindat Locality ID: 34116
mindat URL: http://www.mindat.org/loc-34116.html

Tectonic Settings:

Total number of sublocalities beneath "Hohentwiel, Singen, Hegau, Baden-Württemberg, Germany": 0
Total number of bottom-level sublocalities: 0

Latitude: 47°45'56"N
Longitude: 8°49'9"E
Decimal Degree (lat, lon): 47.765555555556,8.8191666666667

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.

Amorphous	Analcime	Calcite	Cancrinite-sodalite	Natrolite	None	Sodalite

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 C Ca H Na O S Si

Elements from minerals reported directly at this locality: Al C Ca H Na O S Si

Structural Groups for minerals in this locality:
Amorphous Analcime Calcite Cancrinite-sodalite Natrolite None Sodalite

5 IMA Minerals at location:

Analcime ()*	Calcite ()*	Haüyne ()*	Natrolite ()*	Opal ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O	15.7	15.7	1627
Calcite ()*	Calcite	Ca(CO₃)	15.7	15.7	27770
Haüyne ()*	Sodalite Cancrinite-sodalite	Na₃Ca(Si₃Al₃)O₁₂(SO₄)	15.7	15.7	158
Natrolite ()*	Natrolite	Na₂(Si₃Al₂)O₁₀·2H₂O	15.7	15.7	1236
Opal ()*	Amorphous	SiO₂·nH₂O	15.7	15.7	2994

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Jen_0000615	MAGMATIC STYLE: Fragments in tuff and lapilli. ASSOCIATED SILICATE ROCKS: Olivine melilitite plugs and tuffs, and phonolite intrusions.

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
	Jen_0000615	15.7	15.7	15.7	K-Ar						Yes				35801	Hegau, Baden-Württemberg, Germany	Hegau	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...