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:
Bjellåsen, Froland, Aust-Agder, Norway

Oldest recorded age at locality: 982
Youngest recorded age at locality: 843

mindat Locality ID: 49702
mindat URL: http://www.mindat.org/loc-49702.html

Tectonic Settings:

Total number of sublocalities beneath "Bjellåsen, Froland, Aust-Agder, Norway": 6
Total number of bottom-level sublocalities: 6

Number of Child Localities: 6
Child Localities:
Bjellåsen 1
Bjellåsen 2
Bjellåsen 3
Bjellåsen 4
Bjellåsen 5 (Nordre Bjellåsen)
Bjellåsen 6 (Fisketjønn)

Latitude: 58°33'18"N
Longitude: 8°26'31"E
Decimal Degree (lat, lon): 58.555,8.4419444444444

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	Columbite	Feldspar	Fluorite	Mica	None	Quartz	Scheelite	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 Be Fe H K Nb O Si U Y

Elements from minerals reported directly at this locality: Al Be Fe H K Nb O Si U Y

Structural Groups for minerals in this locality:
Beryl Clay Columbite Feldspar Fluorite Mica None Quartz Scheelite Spinel

8 IMA Minerals at location:

Beryl ()*	Fergusonite-(Y) ()*	Magnetite ()*	Microcline ()*	Muscovite ()*
Quartz ()*	Samarskite-(Y) ()*	Uraninite ()*

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
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	982	843	0		4286
Fergusonite-(Y) ()*	Scheelite	YNbO₄	982	843	0		196
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	982	843	0		14899
Microcline ()*	Feldspar	K(AlSi₃O₈)	982	843	1	90108	4924
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	982	843	0		17380
Quartz ()*	Quartz	SiO₂	982	843	1	90108	61156
Samarskite-(Y) ()*	Columbite	YFe³⁺Nb₂O₈	982	843	0		353
Uraninite ()*	Fluorite	UO₂	982	843	0		2718

2 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
	Mo-00039	982	944		Rb-Sr						Yes			Mo	2456	Froland, Aust-Agder, Norway		Baadsgaard et al. (1984)		NGT64_111
	Mo-00040	943	843	893±50	Rb-Sr						Yes		Molybdenite	Mo	2456	Froland, Aust-Agder, Norway	Froland	Baadsgaard et al. (1984)		NGT64_111

All locality data graciously provided by mindat.org

All age data...