Lamprophyric-pyroxene-calcite-biotite olivine-melilitite from
Alnö Complex, Sundsvall, Västernorrland County, Sweden

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Classification
Locality type:	Complex
Type:	Lamprophyric-pyroxene-calcite-biotite olivine-melilitite
Confirmation
Validity:	Believed Valid
Data
Mineral Data:	Click here to view Lamprophyric-pyroxene-calcite-biotite olivine-melilitite data
Locality Data:	Click here to view Alnö Complex, Sundsvall, Västernorrland County, Sweden
Data Identifiers
Mindat Occurrence Record ID:	1415539
Long-form Identifier:	1:3:1415539:8
GUID (UUID V4):	88859c5f-3953-494d-9f4b-fcf172ab199a
Localities for Lamprophyric-pyroxene-calcite-biotite olivine-melilitite in this Region
Hörningsholm, Alnö Complex, Sundsvall, Västernorrland County, Sweden
Hovid, Alnö Complex, Sundsvall, Västernorrland County, Sweden
Nearest other occurrences of Lamprophyric-pyroxene-calcite-biotite olivine-melilitite

18.1km (11.2 miles)	ⓘ Åvikebukten Group of Dikes, Tynderö, Timrå, Västernorrland County, Sweden
References
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, 417-424. Kresten, P. 1979. The Alnö complex: discussion of the main features, bibliography and excursion guide. Paper presented at the Nordic Carbonatite Symposium, Alnö, Sweden. distribution, mineralogy and genesis. Contributions to Mineralogy and Petrology, 100(2), 169-182. doi.org/10.1007/BF00373583 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. Kresten, P. (1977). K, Rb and Cs in carbonatites and associated rocks from central Sweden. Geologiska Föreningen i Stockholm Förhandlingar, 99(4), 377-383.doi.org/10.1080/11035897709455040 Kresten, P., Printzlau, I., Rex, D., Vartiainen, H., & Woolley, A. (1977). New ages of carbonatitic and alkaline ultramafic rocks from Sweden and Finland. Geologiska Föreningen i Stockholm Förhandlingar, 99(1), 62-65. doi.org/10.1080/11035897709454992 Brueckner, H. K., & Rex, D. C. (1980). KA and Rb Sr geochronology and Sr isotopic study of the Alnö alkaline complex, northeastern Sweden. Lithos, 13(2), 111-119. doi.org/10.1016/0024-4937(80)90012-2 Kresten, P. (1980). The Alnö complex: tectonics of dyke emplacement. Lithos, 13(2), 153-158. doi.org/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.org/10.1007/BF00380168 Kresten, P. (1986). Alkaline and carbonatitic Alnø dikes (Map). Sveriges Geologiske Undersøkning, Ser. Ba, (31). Morogan, V., & Woolley, A. R. (1988). Fenitization at the Alnö carbonatite complex, Sweden Morogan, V. (1989). Mass transfer and REE mobility during fenitization at Alnö, Sweden. Contributions to Mineralogy and Petrology, 103(1), 25-34. doi.org/10.1007/BF00371362 Morogan, V., & Lindblom, S. (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.org/10.1007/s004100050126 Ingrid, H. K. (1998). Rare earth elements in sövitic carbonatites and their mineral phases. Journal of Petrology, 39(11-12), 2105-2121.https://doi.org/10.1093/petroj/39.11-12.2105 Vuorinen, J. H., & Skelton, A. D. (2004). Origin of silicate minerals in carbonatites from Alnö Island, Sweden: magmatic crystallization or wall rock assimilation?. Terra Nova, 16(4), 210-215. doi.org/10.1111/j.1365-3121.2004.00557.x Vuorinen, J. H., & Hålenius, U. (2005). Nb-, Zr-and LREE-rich titanite from the Alnö alkaline complex: crystal chemistry and its importance as a petrogenetic indicator. Lithos, 83(1-2), 128-142. Meert, J. G., Walderhaug, H. J., Torsvik, T. H., & Hendriks, B. W. (2007). Age and paleomagnetic signature of the Alnø carbonatite complex (NE Sweden): Additional controversy for the Neoproterozoic paleoposition of Baltica. Precambrian Research, 154(3-4), 159-174. doi.org/10.1016/j.precamres.2006.12.008 Andersson, M., Malehmir, A., Troll, V. R., Dehghannejad, M., Juhlin, C., & Ask, M. (2013). Carbonatite ring-complexes explained by caldera-style volcanism. Scientific reports, 3(1), 1-9. https://www.nature.com/articles/srep01677.pdf

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Lamprophyric-pyroxene-calcite-biotite olivine-melilitite from Alnö Complex, Sundsvall, Västernorrland County, Sweden

Lamprophyric-pyroxene-calcite-biotite olivine-melilitite from
Alnö Complex, Sundsvall, Västernorrland County, Sweden