 | | Journal (article/letter/editorial) | | 50.3.593 CRYSTAL CHEMISTRY OF MINERALS OF THE WÖHLERITE GROUP FROM THE LOS ARCHIPELAGO, GUINEA Cristian...crystal chemistry of the minerals belonging to the wöhlerite group. Chemical and X-ray studies permitted the...different mineral species: låvenite, normandite, wöhlerite, and hiortdahlite I. The identification of hiortdahlite...mosandrite, sérandite, sphalerite, and villiaumite; wöhlerite and hiortdahlite I are associated with britholite-(Ce)...intermediate terms in the låvenite-normandite series. Wöhlerite shows the highest Mn content ever recorded for |  | | Journal (article/letter/editorial) | | alteration in eudialyte from the North Q6roq centre, South Greenland IAN M. COULSON School of Earth Sciences...Birmingham B15 2TT, England Abstract The North Q6roq centre comprises a series of nested nepheline syenite...Proterozoic Gardar province of South Greenland. Within the centre fractionation has produced varied rock...eudialyte from the lujavrites of unit SN1B of the centre show evidence for two-stage alteration. This alteration...intrusion of younger syenite units of the North Q6roq centre. More extensive alteration is as a result |  | | Journal (article/letter/editorial) | | eudialyte in lujavrite from the Pilansberg alkaline complex, South Africa Roger H. Mitchell ⁎, Ruslan P. Liferovich...most evolved rocks of the Pilansberg alkaline complex are aegirine lujavrites in which three varieties...are recognizable. Type 1 involves replacement by complex aggregates of zircon, fergusonite-(Ce), allanite-(Ce)...“miaskitic” paragenesis. Type 2 alteration consists of complex aggregates dominated by deuteric Na–Zr-silicates...The Mesoproterozoic Pilansberg agpaitic alkaline complex is a large (∼ 25 × 24 km) partially unroofed ring |  | Piilonen, Paula C., McDonald, Andrew M., Poirier, Glenn, Rowe, Ralph, Larsen, Alf Olav (2013) Mafic minerals of the alkaline pegmatites in the Larvik plutonic complex, Oslo rift, southern Norway. The Canadian Mineralogist, 51 (5) 735-770 doi:10.3749/canmin.51.5.735 | Journal (article/letter/editorial) | | THE ALKALINE PEGMATITES IN THE LARVIK PLUTONIC COMPLEX, OSLO RIFT, SOUTHERN NORWAY Paula C. PIILONEN§... Canada Alf Olav LARSEN Statoil ASA, Research Centre Porsgrunn, Hydroveien 67, N-3908 Porsgrunn, Norway...plutonic complex, Oslo rift, southern Norway, have been studied to shed light on the complex evolutionary...pegmatites in Ring Sections 1–8 within the Larvik complex have been derived from the same parental melt,...Gomes et al. 1970). Within the Larvik plutonic complex, Oslo rift, Norway, preliminary studies on 736 |  | | Journal (article/letter/editorial) | | which Zr, Hf, Nb, Ta and REE are sequestered in complex Na-Ca-K zirconosilicates and titanosilicates (Khomyakov...Kärr (Sweden; Adamson, 1944) and the Red Wine Complex (Quebec; Curtis and Currie, 1977). Schilling et...compositional data for this eudialyte and describe the complex alteration to a diverse secondary mineral assemblage...series. 2. Geology of the sushina nepheline syenite complex Small exposures of nepheline syenite gneiss are...5–1.6 Ga) of the North Singhbhum Mobile Belt (Mazumder, 2005). The age of the complex is not well- R |  | | Journal (article/letter/editorial) | | rare metal potential of the peralkaline volcanic complex of the southern Peak Range, Central Queensland...rare metal potential of the peralkaline volcanic complex of the southern Peak Range, Central Queensland...rare metal potential of the peralkaline volcanic complex of the southern Peak Range, Central Queensland...bearing minerals, such as eudialyte-, rinkite- and wöhlerite-group minerals. The rn miaskitic group is defined...mantle plume generated melts with the overlying, north-moving Australian plate has been invoked to explain |
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