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:
Rangleåsen, Tvedestrand, Aust-Agder, Norway

Oldest recorded age at locality: 1105
Youngest recorded age at locality: 1083

mindat Locality ID: 273024
mindat URL: http://www.mindat.org/loc-273024.html

Tectonic Settings:

Total number of sublocalities beneath "Rangleåsen, Tvedestrand, Aust-Agder, Norway": 0
Total number of bottom-level sublocalities: 0

Latitude: 58°39'30"N
Longitude: 9°0'38"E
Decimal Degree (lat, lon): 58.658333333333,9.0105555555556

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.

Clay	Corundum	Mica	None	Rutile	Sapphirine	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:
Clay Corundum Mica None Rutile Sapphirine Spinel

7 IMA Minerals at location:

Corundum ()*	Ilmenite ()*	Magnetite ()*	Phlogopite ()*	Rutile ()*
Sapphirine ()*	Spinel ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Corundum ()*	Corundum	Al₂O₃	1105	1083	1797
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	1105	1083	5433
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1105	1083	14899
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	1105	1083	2273
Rutile ()*	Rutile	TiO₂	1105	1083	5614
Sapphirine ()*	Sapphirine	Mg₄(Mg₃Al₉)O₄[Si₃Al₉O₃₆]	1105	1083	129
Spinel ()*	Spinel	MgAl₂O₄	1105	1083	1934

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
	Bradley_2012_118	1105	1083	1094±11	U/Pb			euxenite			Yes				12430	Tvedestrand, Aust-Agder, Norway	Tvedestrand	McCauley and Bradley (2014)	10.3749/canmin.52.2.183	CM52_183

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...