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Biotite from
Alnö Complex, Sundsvall, Västernorrland County, Sweden


Locality type:Complex
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Age information
Maximum recorded age:584 ± 7 Ma
Minimum recorded age:584 ± 7 Ma
Sample ages:
Recorded ageGeologic TimeSampleDating method
1584 ± 7 MaEdiacaran - Ar/Ar
Sample references:
1 -
Meert, Joseph G., Walderhaug, Harald J., Torsvik, Trond H., Hendriks, Bart W.H. (2007) Age and paleomagnetic signature of the Alnø carbonatite complex (NE Sweden): Additional controversy for the Neoproterozoic paleoposition of Baltica. Precambrian Research, 154 (3) 159-174 doi:10.1016/j.precamres.2006.12.008
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Calzirtite2
Zircon2
Calcite2
Titanite2
Fluorapatite1
Diopside1
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Alnö Complex, Sundsvall, Västernorrland County, Sweden
Data Identifiers
Mindat Occurrence Record ID:1415519
Long-form Identifier:1:3:1415519:4
GUID (UUID V4):0
Localities for Biotite in this Region
Smedsgården, Alnö Complex, Sundsvall, Västernorrland County, Sweden
Nearest other occurrences of Biotite
5.0km (3.1 miles) ⓘSmedsgården, Alnö Complex, Sundsvall, Västernorrland County, Sweden
18.1km (11.2 miles) ⓘÅvikebukten Group of Dikes, Tynderö, Timrå, Västernorrland County, Sweden
56.5km (35.1 miles) ⓘJungfruberget-Sandsvedjan, Kramfors, Västernorrland County, Sweden
63.9km (39.7 miles) ⓘTjärned, Kramfors, Västernorrland County, Sweden
64.5km (40.1 miles) ⓘJärkvissle, Sundsvall, Västernorrland County, Sweden
68.1km (42.3 miles) ⓘSels-Vitberget, Kramfors, Västernorrland County, Sweden
74.2km (46.1 miles) ⓘHälleberget, Ragunda, Jämtland County, Sweden
80.6km (50.1 miles) ⓘÄskja, Ullånger, Kramfors, Västernorrland County, Sweden
86.2km (53.5 miles) ⓘStockberget, Sollefteå, Västernorrland County, Sweden
89.3km (55.5 miles) ⓘBerg, Sollefteå, Västernorrland County, Sweden
References
Kresten, P. 1979. The Alnö complex: discussion of the main features, bibliography and excursion guide. Paper presented at the Nordic Carbonatite Symposium, Alnö, Sweden.
Von Eckermann, H. (1958). The alkaline and carbonatite dykes of the Alnö formation on the mainland north-west of Alnö Island Kungl. Svensk. Vetenskaps Handl. Fjärde Serien., 7, 1-61.
Von Eckermann, H. (1966). Progress of research on the Alnö carbonatite. In Carbonatites. Intersci. Publishers New York.
Eckermann, H. V. (1966). The pyroxenes of the Alnö carbonatites (sövite) and the surrounding fenites. Mineral. Soc. India, IMA Vol., 126-139.
Von Eckermann, H. (1966). Progress of research on the Alnö carbonatite. In Carbonatites. Intersci. Publishers New York.
Eckermann, H. V. (1966). The pyroxenes of the Alnö carbonatites (sövite) and the surrounding fenites. Mineral. Soc. India, IMA Vol., 126-139.
Eckermann, H. von (1967) The strontium and barium contents of the Alnö sövites and the alkaline, carbonatitic and ultrabasic rocks. Arkiv för Mineralogi och Geologi, 4 (5, nr 20). 417-424
Kresten, Peter (1977) K, Rb and Cs in carbonatites and associated rocks from central Sweden. Geologiska Föreningen i Stockholm Förhandlingar, 99 (4) 377-383 doi:10.1080/11035897709455040
Kresten, Peter, Printzlau, Ivan, Rex, David, Vartiainen, Heikki, Woolley, Alan (1977) New ages of carbonatitic and alkaline ultramafic rocks from Sweden and Finland. Geologiska Föreningen i Stockholm Förhandlingar, 99 (1) 62-65 doi:10.1080/11035897709454992
Kresten, Peter (1977) K, Rb and Cs in carbonatites and associated rocks from central Sweden. Geologiska Föreningen i Stockholm Förhandlingar, 99 (4) 377-383 doi:10.1080/11035897709455040
Kresten, Peter, Printzlau, Ivan, Rex, David, Vartiainen, Heikki, Woolley, Alan (1977) New ages of carbonatitic and alkaline ultramafic rocks from Sweden and Finland. Geologiska Föreningen i Stockholm Förhandlingar, 99 (1) 62-65 doi:10.1080/11035897709454992
Brueckner, Hannes K., Rex, D.C. (1980) K-Ar and Rb-Sr geochronology and Sr isotopic study of the Alnö alkaline complex, northeastern Sweden. Lithos, 13 (2). 111-119 doi:10.1016/0024-4937(80)90012-2
Kresten, P. (1980) The Alnö complex: tectonics of dyke emplacement. Lithos, 13 (2) 153-158 doi:10.1016/0024-4937(80)90016-x
Brueckner, Hannes K., Rex, D.C. (1980) K-Ar and Rb-Sr geochronology and Sr isotopic study of the Alnö alkaline complex, northeastern Sweden. Lithos, 13 (2). 111-119 doi:10.1016/0024-4937(80)90012-2
Kresten, P. (1980) The Alnö complex: tectonics of dyke emplacement. Lithos, 13 (2) 153-158 doi:10.1016/0024-4937(80)90016-x
Barber, D. J.; Wenk, H. R. (1984) Microstructures in carbonates from the Alnø and Fen carbonatites. Contributions to Mineralogy and Petrology, 88 (3). 233-245 doi:10.1007/bf00380168
Kresten, P. (1986). Alkaline and carbonatitic Alnø dikes (Map). Sveriges Geologiske Undersøkning, Ser. Ba, (31).
Morogan, Viorica, Woolley, Alan R. (1988) Fenitization at the Alnö carbonatite complex, Sweden; distribution, mineralogy and genesis. Contributions to Mineralogy and Petrology, 100 (2) 169-182 doi:10.1007/bf00373583
Morogan, Viorica (1989) Mass transfer and REE mobility during fenitization at Alnö, Sweden. Contributions to Mineralogy and Petrology, 103 (1). 25-34 doi:10.1007/bf00371362
Morogan, V., Lindblom, Sten (1995) Volatiles associated with the alkaline - carbonatite magmatism at Alnö, Sweden: a study of fluid and solid inclusions in minerals from the Laångarsholmen ring complex. Contributions to Mineralogy and Petrology, 122 (3) 262-274 doi:10.1007/s004100050126
Ingrid, H.-K. (1998) Rare earth elements in sövitic carbonatites and their mineral phases. Journal of Petrology, 39 (11). 2105-2121 doi:10.1093/petroj/39.11-12.2105
Vuorinen, Jaana Hode, Skelton, Alasdair D. L. (2004) Origin of silicate minerals in carbonatites from Alnö Island, Sweden: magmatic crystallization or wall rock assimilation? Terra Nova, 16 (4). 210-215 doi:10.1111/j.1365-3121.2004.00557.x
Hode Vuorinen, Jaana, Hålenius, Ulf (2005) Nb-, Zr- and LREE-rich titanite from the Alnö alkaline complex: Crystal chemistry and its importance as a petrogenetic indicator. Lithos, 83 (1) 128-142 doi:10.1016/j.lithos.2005.01.008
Meert, Joseph G., Walderhaug, Harald J., Torsvik, Trond H., Hendriks, Bart W.H. (2007) Age and paleomagnetic signature of the Alnø carbonatite complex (NE Sweden): Additional controversy for the Neoproterozoic paleoposition of Baltica. Precambrian Research, 154 (3) 159-174 doi:10.1016/j.precamres.2006.12.008
Andersson, Magnus, Malehmir, Alireza, Troll, Valentin R., Dehghannejad, Mahdieh, Juhlin, Christopher, Ask, Maria (2013) Carbonatite ring-complexes explained by caldera-style volcanism. Scientific Reports, 3 (1). 1677 doi:10.1038/srep01677
 
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