 | | Journal (volume) | | manganiferous iron formation of the Porkonen- Pahtavaara area in Finnish Lapland by Juhani Paakkola Geologinen...J\IA JGAI 1FEROUS IRO FORj\IATION OF THE PORKONEN-PAHTAVAARA AREA I FINNISH LAPLA D BY ]UHANI PAAKKOL1\...Department of Chemistry of the Geological Survey of Finland. During my work I was advised and encouraged in...Stigzelius, Director of the Geological Survey of Finland, kindly arranged for thc publication of this paper...and the Foundation of Savings Banks of Northern Finland. Mrs Maija Outakoski drew the maps and illustrations |  | | Journal (article/letter/editorial) | | ironbearing silicate minerals including stilpnomelane, minnesotaite, chlorite, cummingtonite, and actinolite. Pure...secondary origin with regards to the granules. Minnesotaite is generally not as abundant as stilpnomelane...stilpnomelane sheaves. Chlorite is much more common than minnesotaite, displays a tabular to platy habit, and occurs...textures of stilpnomelane (Stp), ferro-talc-minnesotaite (M), and chlorite (Chl) in the silicate-facies...along edges of subhedral quartz crystals. F. Minnesotaite intergrown with magnetite and quartz in quartz |  | Bekker, A., Slack, J. F., Planavsky, N., Krapez, B., Hofmann, A., Konhauser, K. O., Rouxel, O. J. (2010) Iron Formation: The Sedimentary Product of a Complex Interplay among Mantle, Tectonic, Oceanic, and Biospheric Processes. Economic Geology, 105 (3) 467-508 doi:10.2113/gsecongeo.105.3.467 | Journal (article/letter/editorial) | | at the biotite zone and lower, greenalite, minnesotaite, stilpnomelane, chamosite, ripidolite (Fe chlorite)...younger. The formation of stilpnomelane, chlorite, minnesotaite, riebeckite, crocidolite, and most hematite...Black Hills, South Dakota; Frei et al., 2008) and Finland (Paakola, 1971; Laajoki and Saikkonen, 1977). Oolitic...Väyrylänkylä, South Puolanka area, Finland: Geological Survey of Finland Bulletin 292, p. 1−137. LaBerge...manganiferous iron formation of the Porkonen-Pahtavaara area in Finnish Lapland: Bulletin de la Commission géologique |  | | Book | | trondhjemites, tonalites and granodiorites from eastern Finland: Major and trace element geochemistry. Journal...hematite, Fe-rich silicate minerals (stilpnomelane, minnesotaite, and riebeckite), carbonate minerals (siderite...study of the Kymi topaz granite stock, southern Finland. Contribution to Mineralogy and Petrology, 153...(Chacko et al. 1987), Sri Lanka (Cooray 1962), and Lapland of Fennoscandia (Barbey et al. 1982). The khondalite...the khondalite suite of the granulite belt of Lapland (Fennoscandia): Evidence for an early Proterozoic |
|
