Geochemistry and tectonic setting of a lamproite dyke in Kvaløya, North Norway

Kullerud, Kåre; Zozulya, Dmitry; Bergh, Steffen G.; Hansen, Harald; Ravna, Erling J. Krogh

doi:10.1016/j.lithos.2011.08.002

Cited by 17 publications

(19 citation statements)

References 47 publications

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“…The baotite presented here shows Cl contents slightly above 1 a.p.f.u., and as for all other reported baotite analyses, it does not have F. Interestingly, the baotite from the Kvaløya lamproite dyke occurs together with a range of high-F minerals, including phlogopite (up to 4.6 wt%F; Kullerud et al 2011), fluorine-potassic-magnesio-arfvedsonite (up to 2.9 wt%F; Kullerud et al 2011), yangzhumingite (up to 6 wt%F;work in progress), and fluorapatite (up to 4.7 wt%F; this study). All these F-bearing minerals contain only trace amounts of Cl.…”

Section: Introductionsupporting

confidence: 60%

“…In this paper we present new analyses of baotite from the Kvaløya lamproite dyke, which intruded a Paleoproterozoic granite belonging to the West Troms Basement Complex during Carboniferous time (Zozulya et al 2010;Kullerud et al 2011). The baotite presented here shows Cl contents slightly above 1 a.p.f.u., and as for all other reported baotite analyses, it does not have F. Interestingly, the baotite from the Kvaløya lamproite dyke occurs together with a range of high-F minerals, including phlogopite (up to 4.6 wt%F; Kullerud et al 2011), fluorine-potassic-magnesio-arfvedsonite (up to 2.9 wt%F; Kullerud et al 2011), yangzhumingite (up to 6 wt%F;work in progress), and fluorapatite (up to 4.7 wt%F; this study).…”

Section: Introductionmentioning

confidence: 77%

“…1). At the Melketinden locality, the dyke can be followed for about 1 km, while it at the Blåmannvika locality can be followed for about 400 m. That the two localities of the dyke belong to the same intrusive body is supported by the fact that the samples show similar rare mineralogy and chemical composition, and similar orientation (Kullerud et al 2011). The dyke commonly shows~1 cm thick well-developed chilled margins.…”

Section: Occurrence Of the Dykementioning

confidence: 93%

“…The Kvaløya lamproite dyke intruded a Paleoproterozoic granite which belongs to the West Troms Basement Complex, on the island Kvaløya, northern Norway (Kullerud et al 2011). The up to 30 cm wide dyke has been observed at two localities within the host granite, both occurring along a pronounced lineament that can be observed on aerial photographs at Melketinden and at Blåmannvika (Fig.…”

Section: Occurrence Of the Dykementioning

confidence: 96%

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Formation of baotite - a Cl-rich silicate - together with fluorapatite and F-rich hydrous silicates in the Kvaløya lamproite dyke, North Norway

2012

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Baotite occurs as a late phase in the Kvaløya lamproite dyke and in the fenitized granite adjacent to the dyke, suggesting that baotite formed during reactions between rock and fluids derived from a volatile-rich lamproitic magma. Most of the analyzed grains of baotite from the Kvaløya lamproite show compositions close to the ideal Nbfree end-member Ba 4 Ti 8 Si 4 O 28 Cl. Compilation of all published baotite analyses suggests that the major compositional variations of baotite occur between the Nb-free end

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Section: Introductionsupporting

confidence: 60%

Section: Introductionmentioning

confidence: 77%

Section: Occurrence Of the Dykementioning

confidence: 93%

Section: Occurrence Of the Dykementioning

confidence: 96%

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Formation of baotite - a Cl-rich silicate - together with fluorapatite and F-rich hydrous silicates in the Kvaløya lamproite dyke, North Norway

2012

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“…The existence of the inferred faults associated with these trend pattern in the radiant Peddavura-Ramadugu region are also likely to be associated with lamproites, might be confined to Archean and Proterozoic cratons are linked to upwelling mantle due to drifting or a mantle plume (Kullerud et al 2011).…”

Section: Igrf Corrected Total Magnetic Intensity(tmi)mentioning

confidence: 92%

Emplacement of Lamproites in and around Ramadugu, Nalgonda District- ground Magnetic evidence

Ramadass

Laxmi

2016

IRA-JAS

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Crystal-chemistry of micas belonging to the yangzhumingite-fluorophlogopite and phlogopite-fluorophlogopite series from the Apuan Alps (northern Tuscany, Italy)

et al. 2020

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The present work reports the crystal-chemical characterization of micas from the Monte Arsiccio and Buca della Vena mines (Apuan Alps, Italy) through electron microprobe analysis, single-crystal X-ray diffraction, and Raman spectroscopy. The sample from the Monte Arsiccio mine can be classified as an intermediate member of the yangzhumingite-fluorophlogopite series, with average crystal-chemical formula (K0.85Na0.01Ba0.09)Σ=0.95(Mg2.11Fe2+0.23Fe3+0.11Cr3+0.01Al0.20Ti0.04☐0.30)Σ=3.00(Si3.20Al0.80)Σ=4.00O10.00F1.90Cl0.02(OH)0.08. Unit-cell parameters are a ~ 5.30, b ~ 9.18, c ~ 10.14 Å, β ~ 100.12°, V ~ 486.22 Å3, corresponding to the 1M polytype. Structure refinements, performed in C2/m space group, converged to R1 = 3.54 and 4.46% and provided Mg plus Fe occupancy in the range 86–94% for the octahedral M1 and M2 sites. Raman spectroscopy shows very weak bands in the OH stretching region at ~ 3690 and 3580 cm−1. The sample from the Buca della Vena mine has been identified as an (OH)-rich fluorophlogopite, with average crystal-chemical formula (K0.84Na0.02Ca0.01)Σ=0.87(Mg2.12Fe2+0.55Fe3+0.10Al0.18☐0.05)Σ=3.00(Si2.99Al1.01)Σ=4.00O10.00F1.02Cl0.09(OH)0.89. Its unit-cell parameters are a ~ 5.33, b ~ 9.22, c ~ 10.23 Å, β ~ 100.09°, V ~ 494.39 Å3. Structure refinements gave good R1 values (3.27 and 4.37%) and revealed octahedral occupancy of 82–84% Mg and 16–18% Fe. Strong Raman signals at ~ 3702 cm−1 and 3595 cm−1 were observed in the OH stretching region. The findings allow to better understand not only the mineralogy of the Apuan Alps but, more generally, the crystal chemical details of intermediate dioctahedral-trioctahedral mica belonging to the yanzhumingite-fluorophlogopite series.

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Geochemistry and tectonic setting of a lamproite dyke in Kvaløya, North Norway

Cited by 17 publications

References 47 publications

Formation of baotite - a Cl-rich silicate - together with fluorapatite and F-rich hydrous silicates in the Kvaløya lamproite dyke, North Norway

Formation of baotite - a Cl-rich silicate - together with fluorapatite and F-rich hydrous silicates in the Kvaløya lamproite dyke, North Norway

Emplacement of Lamproites in and around Ramadugu, Nalgonda District- ground Magnetic evidence

Crystal-chemistry of micas belonging to the yangzhumingite-fluorophlogopite and phlogopite-fluorophlogopite series from the Apuan Alps (northern Tuscany, Italy)

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