SIMS analyses on trace and rare earth elements in coexisting clinopyroxene and mica from minette mafic enclaves in potassic syenites crystallized under high pressures

Cid, Jorge Plá; Nardi, Lauro Valentim Stoll; Gisbert, Pere Enrique; Merlet, Claude; Boyer, Bernard

doi:10.1007/s00410-004-0626-7

Cited by 13 publications

(10 citation statements)

References 49 publications

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“…This suggests that HREE are partitioned into clinopyroxene to much higher extent than indicated by Foley et al (1996). Actually these higher clinopyroxene/ matrix D values are in line with results from near-solidus melting experiments of on spinel lherzolite producing melt of basaltic composition (Blundy et al 1998 Foley et al (1996) andPlá Cid et al (2005) Cpx/matrix D (this study) 1σ…”

Section: Discussionsupporting

confidence: 88%

“…Phl/matrix D (Foley et al 1996) Phl (Foley et al 1996;Plá Cid et al 2005 and this study). Not plotted are clinopyroxene/matrix D Ba values << 0.001.…”

Section: Discussionsupporting

confidence: 59%

“…The clinopyroxene/matrix D Y determined in this study is 0.72, whereas Foley et al (1996) (Foley et al 1996;Plá Cid et al 2005 and this study).…”

Section: Discussionmentioning

confidence: 44%

“…These variably evolved very high-pressure (3-5 GPa) mafic enclaves of intermediate composition (mg# = 62-66) resemble calc-alkaline lamprophyres -minettes, but have a high agpaitic/peralkalinity index [molar (K 2 O + Na 2 O)/ Al 2 O 3 ] of 0.98-1.03 that makes them to straddle the boundary between alkaline and peralkaline rocks (Shand 1943). Furthermore, the trace-element compositions of the enclaves are quite similar to those of silica-rich lamproites (Plá Cid et al 2005).…”

Section: Introductionmentioning

confidence: 68%

“…This moderately evolved dyke with Mg-number [mg# = molar 100 × MgO/(MgO + FeOt)] of 60 was classified as monchiquite. In addition, Plá Cid et al (2005) applied secondary ion mass spectrometry (SIMS) to determine trace-elements partitioning between clinopyroxene and mica from mafic enclaves containing K-clinopyroxene and pyrope-rich garnet in the Piquiri Syenite Massif, southernmost Brazil. These variably evolved very high-pressure (3-5 GPa) mafic enclaves of intermediate composition (mg# = 62-66) resemble calc-alkaline lamprophyres -minettes, but have a high agpaitic/peralkalinity index [molar (K 2 O + Na 2 O)/ Al 2 O 3 ] of 0.98-1.03 that makes them to straddle the boundary between alkaline and peralkaline rocks (Shand 1943).…”

Section: Introductionmentioning

confidence: 99%

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Phlogopite/matrix, clinopyroxene/matrix and clinopyroxene/phlogopite trace-element partitioning in a calc-alkaline lamprophyre: new constrains from the Křižanovice minette dyke (Bohemian Massif)

Krmíček¹,

Halavínová²,

Romer³

et al. 2014

J. Geosci.

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Mineral/matrix and mineral/mineral partition coefficients were determined for clinopyroxene and phlogopite phenocrysts and their very fine-grained (chilled) groundmass from a Variscan calc-alkaline (agpaitic index = 0.6) lamprophyre dyke of minette composition from the Bohemian Massif (Křižanovice, Teplá-Barrandian Unit). This dyke is characterized by high MgO (8.9 wt. %; Mg-number = 69) at intermediate SiO 2 content (53 wt. %). The partition coefficients (D) between clinopyroxene and matrix were determined for 23 elements by laser ablation-inductively coupled plasma-mass spectrometry. Calculated clinopyroxene/matrix D values are very low, except for heavy rare earth elements (HREE) that range between 0.9 and 1.1. This suggests that HREE can be concentrated in clinopyroxene during crystallization from lamprophyre melt. In phlogopite, only 15 elements had contents above their respective detection limits. Phlogopite/matrix partition coefficients are on average higher than 1 (D Ba = 1.1, D Rb = 1.7 D Ti = 1.5) and extremely low (≤ 0.02) for light rare earth elements (LREE). On the other hand, phlogopite/matrix D values for the majority of HREE could not be determined. Taken together, during simultaneous crystallization of clinopyroxene and phlogopite phenocrysts, Th, Zr, Hf, Y and LREE are preferentially partitioned into clinopyroxene and Ba with Rb and Ti into phlogopite.

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Section: Discussionsupporting

confidence: 88%

“…Phl/matrix D (Foley et al 1996) Phl (Foley et al 1996;Plá Cid et al 2005 and this study). Not plotted are clinopyroxene/matrix D Ba values << 0.001.…”

Section: Discussionsupporting

confidence: 59%

“…The clinopyroxene/matrix D Y determined in this study is 0.72, whereas Foley et al (1996) (Foley et al 1996;Plá Cid et al 2005 and this study).…”

Section: Discussionmentioning

confidence: 44%

Section: Introductionmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

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Phlogopite/matrix, clinopyroxene/matrix and clinopyroxene/phlogopite trace-element partitioning in a calc-alkaline lamprophyre: new constrains from the Křižanovice minette dyke (Bohemian Massif)

Krmíček¹,

Halavínová²,

Romer³

et al. 2014

J. Geosci.

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Current literature in mass spectrometry

2006

J. Mass Spectrom.

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In order to keep subscribers up‐to‐date with the latest developments in their field, John Wiley & Sons are providing a current awareness service in each issue of the journal. The bibliography contains newly published material in the field of mass spectrometry. Each bibliography is divided into 11 sections: 1 Books, Reviews & Symposia; 2 Instrumental Techniques & Methods; 3 Gas Phase Ion Chemistry; 4 Biology/Biochemistry: Amino Acids, Peptides & Proteins; Carbohydrates; Lipids; Nucleic Acids; 5 Pharmacology/Toxicology; 6 Natural Products; 7 Analysis of Organic Compounds; 8 Analysis of Inorganics/Organometallics; 9 Surface Analysis; 10 Environmental Analysis; 11 Elemental Analysis. Within each section, articles are listed in alphabetical order with respect to author (4 Weeks journals ‐ Search completed at 2nd. Nov. 2005)

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Mantle-triggered intrusions in the western Central Asian Orogenic Belt: implications for the fertilisation of the crust in Tian Shan, Uzbekistan

Choulet

Seltmann

Диваев³

et al. 2022

Int J Earth Sci (Geol Rundsch)

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SIMS analyses on trace and rare earth elements in coexisting clinopyroxene and mica from minette mafic enclaves in potassic syenites crystallized under high pressures

Cited by 13 publications

References 49 publications

Phlogopite/matrix, clinopyroxene/matrix and clinopyroxene/phlogopite trace-element partitioning in a calc-alkaline lamprophyre: new constrains from the Křižanovice minette dyke (Bohemian Massif)

Phlogopite/matrix, clinopyroxene/matrix and clinopyroxene/phlogopite trace-element partitioning in a calc-alkaline lamprophyre: new constrains from the Křižanovice minette dyke (Bohemian Massif)

Current literature in mass spectrometry

Mantle-triggered intrusions in the western Central Asian Orogenic Belt: implications for the fertilisation of the crust in Tian Shan, Uzbekistan

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