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Tordal Norway

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Journal Article
Published: 15 September 2015
The Canadian Mineralogist (2015) 53 (2): 345–356.
...Ritsuro Miyawaki; Koichi Momma; Kazumi Yokoyama; Masako Shigeoka; Satoshi Matsubara; Miku Ito; Izumi Nakai; Roy Kristiansen Abstract Mn-bearing hellandite-(Y) occurs as pinkish yellow granular crystals (up to sub mm) in the Sc-rich granite pegmatite at Heftetjern, Tørdal, Telemark, Norway...
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Journal Article
Published: 01 March 2010
European Journal of Mineralogy (2010) 22 (2): 309–316.
...Uwe Kolitsch; Roy Kristiansen; Gunnar Raade; Ekkehart Tillmanns Abstract Heftetjernite, ideally ScTaO 4 , is a new scandium mineral from the Heftetjern pegmatite, Tørdal, Telemark, Norway. In the type specimen, it occurs as minute, elongate tabular, very dark brown crystals in a single small void...
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Journal Article
Published: 01 August 2006
The Canadian Mineralogist (2006) 44 (4): 943–949.
...Mark A. Cooper; Frank C. Hawthorne; Neil A. Ball; Petr Černý; Roy Kristiansen Abstract Oftedalite, ideally (Sc,Ca,Mn 2+ ) 2 K (Be,Al) 3 Si 12 O 30 , is a new mineral species from the Heftetjern granitic pegmatite, northwest of the small parish of Tørdal, southern Norway. It occurs as short...
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Journal Article
Published: 01 August 1993
European Journal of Mineralogy (1993) 5 (4): 691–698.
Journal Article
Published: 01 December 1987
American Mineralogist (1987) 72 (11-12): 1163–1169.
...Audrey C. Rule; Sturges W. Bailey; Kenneth J. T. Livi; David R. Veblen Abstract Lepidolite from Tørdal, Norway, has been described as the complex stacking polytype 3M 2 = [1 2 1] of space group C2 . Subsequent optical second-harmonic analysis indicated a center of symmetry possibly present...
Journal Article
Published: 01 December 2000
The Canadian Mineralogist (2000) 38 (6): 1419–1424.
...Francesco Demartin; Carlo Maria Gramaccioli; Tullio Pilati Abstract The crystal structure of two samples of bazzite, from the Baveno granite, in Piemonte, Italy (type locality, miarolitic occurrence) and from Tørdal, Norway (pegmatitic occurrence), has been refined. Compared to material from Alpine...
Journal Article
Published: 30 September 2019
The Canadian Mineralogist (2019) 57 (5): 799–801.
... mineral. References Bergstøl, S. & Juve, G. (1988) Scandian ixiolite, pyrochlore and bazzite in granite pegmatite in Tørdal, Telemark, Norway. A contribution to the mineralogy and geochemistry...
Journal Article
Published: 01 October 2009
Mineralogical Magazine (2009) 73 (5): 709–722.
...A. J. Lussier; M. A. Cooper; F. C. Hawthorne; R. Kristiansen Abstract Two crystals from a sample of titanite from the Heftetjern granitic pegmatite, Tørdal, southern Norway, were extracted for structure analysis and shown to have triclinic symmetry. Unit-cell parameters are as follows: a = 7.0696(4...
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Journal Article
Published: 01 October 2014
American Mineralogist (2014) 99 (10): 2084–2088.
...Frank C. Hawthorne; Yassir A. Abdu; Neil A. Ball; Petr Černý; Roy Kristiansen Abstract Agakhanovite-(Y), ideally (YCa)□ 2 KBe 3 Si 12 O 30 , is a new milarite-group mineral from the Heftetjern pegmatite, Tørdal, southern Norway. Crystals are prismatic along [001], and show the forms {100} and {100...
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Journal Article
Published: 01 August 2017
European Journal of Mineralogy (2017) 29 (4): 755–766.
...-type pegmatites of the Třebíč Pluton. Milarite-group minerals from Velká Skála exhibit very similar compositional evolution to those found in the Heftetjern pegmatite, Tørdal, Norway. * Corresponding author, e-mail: rskoda@sci.muni.cz The internal textures and chemical compositions...
Journal Article
Published: 23 October 2018
The Canadian Mineralogist (2018) 56 (4): 463–488.
...) and are divided into seven pegmatite fields. The Tørdal and Evje-Iveland pegmatite fields contain the most evolved pegmatites, with micas having atomic K/Rb ratios down to 3, while the most evolved pegmatites, in Froland, have K/Rb ratios down to 23. The highly fractionated pegmatites in Evje-Iveland and Tørdal...
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Regional geological sketch-maps of Heftetjern, <b>Tørdal</b>, Telemark, <b>Norway</b>, re...
Published: 15 September 2015
F ig . 2. Regional geological sketch-maps of Heftetjern, Tørdal, Telemark, Norway, reproduced after Segalstad & Raade (2003) . Stippled lines separate zones with pegmatites dominated by green amazonite, white K-feldspar, and pink K-feldspar.
Journal Article
Published: 01 June 2010
The Canadian Mineralogist (2010) 48 (3): 615–628.
... of Na + K + Rb + Cs > 0.5 apfu found in bazzite from Kožichovice, Kazakhstan and Tørdal, Telemark, Norway, suggests the existence of new phases related to bazzite via the substitution (1) with the general formula R + Be 3 R 3+ R 2+ Si 6 O 18 and idealized formulas Na + Be 3 ScMg 2+ Si 6 O 18...
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Selected mica samples from <b>Tørdal</b> and Evje-Iveland. (A) Zoned mica from Evj...
Published: 23 October 2018
Fig. 2. Selected mica samples from Tørdal and Evje-Iveland. (A) Zoned mica from Evje-Iveland, Tørdal. (B) Medium-grained (MG) “lepidolite” from Upper Høydalen. (C) Coarse-grained (CG) “lepidolite” from Upper Høydalen. (D) Very coarse-grained (VCG) “lepidolite” from Upper Høydalen, Natural
Journal Article
Published: 01 November 2004
European Journal of Mineralogy (2004) 16 (6): 951–956.
... therein). Apart from the Alpine and subalpine region, additional occurrences have been found all over the world: for instance, a notable occurrence in Kazakhstan was described already in 1966 by Chystyakova et al ., and the recent discovery at Heftetjærn, Tørdal, Norway, is one of the most important...
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Journal Article
Published: 01 November 2004
European Journal of Mineralogy (2004) 16 (6): 945–950.
...–250 m long and 3–4 in wide, is situated at Heftetjern, a small lake in the parish of Tørdal, Drangedal community, Telemark county, south Norway. The occurrence of scandium minerals in this pegmatite was first reported by Bergstøl & Juve (1988) and Juve & Bergstøl (1990) , who described...
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The Sveconorwegian pegmatite province extending over southern <b>Norway</b> and so...
Published: 01 March 2017
Fig. 4. The Sveconorwegian pegmatite province extending over southern Norway and southwestern Sweden showing the extent of individual pegmatite districts (areas enclosed by solid blue lines): 1 – Mandal, 2 – Setesdal, 3 – Bamble, 4 – Nissedal, 5 – Hardanger, 6 – Buskerud, 7 – Østfold-Halland
Journal Article
Published: 01 March 2001
Journal of the Geological Society (2001) 158 (2): 253–267.
...TOM ANDERSEN; ARILD ANDRESEN; ARTHUR G. SYLVESTER Abstract Late Sveconorwegian (‘postorogenic’) granites ( c. 1.0–0.93 Ga) make up a voluminous and widespread suite of intrusions across south Norway. From radiogenic isotope data, three groups of late Sveconorwegian granites can be distinguished: (1...
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Journal Article
Published: 01 May 2020
The Canadian Mineralogist (2020) 58 (3): 367–379.
.... & Juve, G. (1988) Scandian ixiolite, pyrochlore and bazzite in granite pegmatite in Tørdal, Telemark, Norway. A contribution to the mineralogy and geochemistry of scandium and tin . Mineralogy and Petrology 38 , 229...
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Journal Article
Published: 30 September 2019
The Canadian Mineralogist (2019) 57 (5): 787–790.
...., Corfu, F., & Friis, H. (2018) New age constraints on the age of the Tørdal pegmatites, southern Norway . 22 nd Meeting of the International Mineralogical Association, Book of Abstracts, 13–17 August 2018, Melbourne...
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