Výsledky vyhledávání - "Gunnar Raade"

Helvine-group minerals from Norwegian granitic pegmatites and some other granitic rocks: Cases of significant Sc and Sn contents

Autor: Gunnar Raade

Publikováno v: The Canadian Mineralogist. 58:367-379

Helvine-group minerals from two granitic pegmatites have disparate compositions, from nearly pure helvine (Ågskardet, northern Norway; Devonian) to helvine close to ternary compositions (Heftetjern, southern Norway; Precambrian). Metagranite from H�

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::552402fe8c199f3926c7a27e1b932605
https://doi.org/10.3749/canmin.1900099

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Folvikite, Sb5+Mn3+(Mg,Mn2+)10O8(BO3)4, a new oxyborate mineral from the Kitteln mine, Nordmark ore district, Värmland, Sweden: description and crystal structure

Autor: Mark A. Cooper, Gunnar Raade, Ralph Rowe, Frank C. Hawthorne, Yassir A. Abdu, Neil A. Ball

Publikováno v: Mineralogical Magazine. 82:821-836

Folvikite, Sb5+Mn3+(Mg,Mn2+)10O8(BO3)4, is a new oxyborate mineral from the Kitteln mine, Värmland, Sweden, where it occurs as a primary skarn mineral embedded in calcite. It forms striated prismatic crystals up to 0.3 mm, and is black to dark reddi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f98461973472e61d8b8aa38ec8a80e73
https://doi.org/10.1180/minmag.2017.081.059

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Byrudite, (Be,〈)(V3+,Ti)3O6, a new mineral from the Byrud emerald mine, South Norway

Autor: Gunnar Raade, Chris J. Stanley, Tonči Balić-Žunić

Publikováno v: Mineralogical Magazine. 79:261-268

Byrudite (IMA 2013-045, Raade et al., 2013), with simplified formula (Be,〈)(V3+,Ti)3O6, occurs in emerald-bearing syenitic pegmatites of Permian age at Byrud farm, Eidsvoll, Akershus, South Norway. It has a norbergite-type structure, Pnma, with a =

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::25b8abb6777d0f691d9e4da2dae91649
https://doi.org/10.1180/minmag.2015.079.2.05

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Heftetjernite, a new scandium mineral from the Heftetjern pegmatite, Tordal, Norway

Autor: Uwe Kolitsch, Roy Kristiansen, Ekkehart Tillmanns, Gunnar Raade

Publikováno v: European Journal of Mineralogy. 22:309-316

Heftetjernite, ideally ScTaO 4 , is a new scandium mineral from the Heftetjern pegmatite, Tordal, Telemark, Norway. In the type specimen, it occurs as minute, elongate tabular, very dark brown crystals in a single small void in albite. Other associat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f7dcdab48860f87dd643babb4303f76e
https://doi.org/10.1127/0935-1221/2010/0022-1987

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Alflarsenite, a new beryllium-silicate zeolite from a syenitic pegmatite in the Larvik plutonic complex, Oslo Region, Norway

Autor: Joel D. Grice, Gunnar Raade, Mark A. Cooper

Publikováno v: European Journal of Mineralogy. 21:893-900

Alflarsenite is a new beryllium-silicate zeolite with chemical composition close to NaCa 2 Be 3 Si 4 O 13 (OH)·2H 2 O. It is a late-stage hydrothermal mineral from a syenitic pegmatite in the Tuften larvikite quarry, Tvedalen, Larvik, Vestfold, sout

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e5d97a13a785b329336d5429b1674e5a
https://doi.org/10.1127/0935-1221/2009/0021-1946

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Proshchenkoite-(Y) from Russia — a new mineral species in the vicanite group: descriptive data and crystal structure

Autor: T. Witzke, Per Kristiansson, Gunnar Raade, M. Erambert, J. D. Grice

Publikováno v: Mineralogical Magazine. 72:1071-1082

A REE-bearing fluorosilicate from the Tommot REE-Nb deposit in Yakutia, Russia, described without a name in 1966, is characterized here as a new species, proshchenkoite-(Y), of the vicanite group of borosilicates. Wavelength-dispersive electron probe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2847b4fedcf8d1c72226d97ede2cbfbe
https://doi.org/10.1180/minmag.2008.072.5.1071

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Hundholmenite-(Y) from Norway – a new mineral species in the vicanite group: descriptive data and crystal structure

Autor: Gunnar Raade, Ole V. Petersen, M. Erambert, Ole Johnsen

Publikováno v: Mineralogical Magazine. 71:179-192

Hundholmenite-(Y) occurs as pale brown, subhedral crystals up to 1 mm across, embedded in REE–bearing fluorite, in a granitic pegmatite at Hundholmen, Tysfjord, Nordland County, north Norway. Two other occurrences in the same area are the granitic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4918b78643af1cc2e39dcffa47b81fc9
https://doi.org/10.1180/minmag.2007.071.2.179

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THE CRYSTAL STRUCTURE OF (Be, )(V,Ti)3O6, A MINERAL RELATED TO KYZYLKUMITE

Autor: Gunnar Raade, Tonci Balic-Zunic

Publikováno v: The Canadian Mineralogist. 44:1147-1158

Nous avons resolu et affine la structure cristalline de (Be,□)(V,Ti) 3 O 6 , un mineral decouvert dans le gisement d'emeraude de Byrud, en Norvege, jusqu'a un residu R 1 de 4.51% en utilisant 1413 reflexions uniques. La structure est orthorhombique

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b32712ee82f033d87dbd20dc4cb55b97
https://doi.org/10.2113/gscanmin.44.5.1147

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Si-rich bergslagite from a granitic pegmatite at Tennvatn, north Norway

Autor: Tomas A. Husdal, Gunnar Raade, Uwe Kolitsch

Publikováno v: GFF. 128:65-68

Si-rich bergslagite from an amazonite-cleavelandite pegmatite at Tennvatn in S⊘rfold, Nordland, north Norway, has the empirical composition Ca1Ca1.00 Ca2Ca0.068(Be0.94Si0.06)(As0.774Si0.226)O4[(OH)0.97 O0.03], based on a single-crystal structure re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::27f37387df7b4e15e025c2c4dba3ea6f
https://doi.org/10.1080/11035890601281065

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