 | Černý, Petr, Chapman, Ron, Ferreira, Karen, Smeds, Sten-Anders (2004) Geochemistry of oxide minerals of Nb, Ta, Sn, and Sb in the Varuträsk granitic pegmatite, Sweden: The case of an “anomalous” columbite-tantalite trend. American Mineralogist, 89 (4) 505-518 doi:10.2138/am-2004-0405 | Journal (article/letter/editorial) | | minerals of Nb, Ta, Sn, and Sb in the Varuträsk granitic pegmatite, Sweden: The case of an “anomalous” columbite-tantalite... SE-752 36 Uppsala, Sweden 1 ABSTRACT The complex, petalite-subtype Varuträsk pegmatite in the Proterozoic...Proterozoic rocks of northern Sweden is, as a whole, rather poor in Nb and Ta. The pegmatite consolidated...pegmatites. The degree of cation order in the Varuträsk columbite-group minerals increases from early...minerals and cassiterite in the petalite-subtype Varuträsk pegmatite emphasizes the importance of specific |  | | Book (edition) | | Ullmannite Arsenolamprite Montbrayite Matildite Herzenbergite brownish greys Felbertalite Braggite Lindströmite...Pajsberg, Persberg district, Filipstad, Värmland, Sweden (sample: Hanel/Altherr); PPL B Native lead (isotropic...grey); Shebenik Massif, Librazhd District, Elbasan County, Albania (sample: Goldmann/Oberthür); PPL B Wairauite...(light grey) in kamacite (tinted white); Kenton County Meteorite, Kentucky, USA (sample: Witzke); PPL...pegmatites, • hydrothermal veins Varuträsk, Skellefteå, Västerbotten, Sweden native Antimony, native Arsenic |  | | Journal (volume) | | Post, Kenya (Richardson 1975). Rose muscovite, Varuträsk, Swede n (Berggren 1941). Rose muscovite, Goshen...determined 1. Bertrandite, Kolsva, Västmanland, Sweden (Märtensson 1960). 2. Bertrandite, Zabai.kalja...inclusions of an unidentified tin sulphide (probably herzenbergite). Microanalyser determinations show that cassiterite...of an unidentified tin sulphide (obviously herzenbergite). In reflected light on a polished section wodginite...Fransolet 1974-1975), Germany (Strunz 1974) and in Sweden (Que nseI 1955) . In Finland, complex pegmatites |  | | Book | | in s o i l s at Mount Pleasant Mines, Charlotte County, New Brunswick. In: Geological Survey of Canada...(ψ-octahedral arrangement). In SnCl« and SnS (herzenbergite) atoms occur at three corners of a tetrahedron...10.2). Fig. 10.2. The crystal structure of herzenbergite 3SnS (Sn shown as small circles, S as large...at 80°K and are typical of SnIV sulphides. Herzenbergite (SnII) (SnIV) S 2 contains both tin (II) and...(3SnS) is stable below 600 C and is the mineral herzenbergite. When co-existing with both Sn and Sn^S„ it |  | | Book | | H E ORE MINERALS FIG. 2 8 x Smâlands Taberg, Sweden RAMDOHR Titanomagnetite-olivinite with the characteristic...OF ORE DEPOSITS FIG. 3 80 x Smâlands Taberg, Sweden RAMDOHR Titanomagnetite (light) with spinel lamellae...sphalerite, galena, and chalcopyrite in Central Sweden, which were developed under high pressure, many...Lângban, Jakobsberg, and other places in Värmland, Sweden, belong perhaps here. Rocks of the lateritic and...part showing pencil F I G . 22 3 x Saxberget, Sweden RAMDOHR Very strongly "tectonized" galena-sphalerite |
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