Journal ArticleDOI
Rare-earth abundances in chondritic meteorites
TLDR
In this article, 15 chondrites, including eight carbonaceous chondites, were analyzed for rare earth element abundances by isotope dilution, and the persistence of anomalies in chondritic materials relatively removed from direct condensational processes implies that anomalous components were introduced at a late stage of chondrite formation.About:
This article is published in Geochimica et Cosmochimica Acta.The article was published on 1978-08-01. It has received 1346 citations till now. The article focuses on the topics: Chondrule & Chondrite.read more
Citations
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Analysis of the CCRMP Oka-2 rare-earth reference mineral of the britholite—apatite series by electrothermal atomic-absorption and inductively-coupled plasma atomic-emission spectrometry
TL;DR: The lanthanides and yttrium in the Canadian certified reference materials project (CCRMP) new rare-earth mineral reference material, Oka-2, were determined by electrothermal atomic absorption and inductively-coupled plasma atomic-emission spectrometry (ICPAES) after sample decomposition with acids and separation of the rare earth metals from phosphate and other matrix elements by precipitation as fluorides and oxalates.
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A Newly Discovered Swarm of Shear-Zone-Hosted Bi–As–Fe–Mg–P-Rich Aplites and Pegmatites in the Hagendorf–Pleystein Pegmatite Province, Southeastern Germany: A Step Closer to the Metamorphic Root of Pegmatites
TL;DR: The Miesbrunn pegmatite-aplite swarm (MPAS) as discussed by the authors was formed by supercritical mobilization of REE, Zr, Mg, Zn, Li, Be and B during stage II leading to a silicate-phosphate mineral association between 500 and 600 degrees C.
Blueschists in the Cretaceous exotic conglomerates of the Klape Unit (Pieniny Klippen Belt, Western Carpathians): their genetic types and implications for source area
P. Ivan,M. Sykora,R. Demko +2 more
TL;DR: In the Klape Unit of the Pieniny Klippen Belt the Albian conglomerates with clasts of exotic carbonates, clastic sediments and also volcanic and plutonic rocks are relatively widespread.
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Petrogenesis of mica-amphibole-bearing lamprophyres associated with the Paleoproterozoic Morro do Afonso syenite intrusion, eastern Brazil
TL;DR: In this paper, a metasomatic mantle was modeled as a metaluminous, ultrapotassic parental liquid, with silica saturation close to the limit of undersaturation, which indicated a mantle source that was partially modified by a subduction event.
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The Petrological and Geochemical Evolution of Ediacaran Rare‐Metal Bearing A‐type Granites from the Jabal Aja Complex, Northern Arabian Shield, Saudi Arabia
TL;DR: The Aja intrusive complex (AIC) is characterized by discontinuous ring-shaped outcrops cut by later faulting as mentioned in this paper, and the A-type rocks of the AIC are late Neoproterozoic post-collisional granites, including alkali feldspar granite, alkaline granite, and peralkaline granite.
References
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Book
Advanced Inorganic Chemistry
TL;DR: Cotton and Wilkinson's Advanced Inorganic Chemistry (AIC) as discussed by the authors is one of the most widely used inorganic chemistry books and has been used for more than a quarter century.
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Synthesis of the Elements in Stars
TL;DR: In this article, a count of the stable and radioactive elements and isotopes is given, and Table I,1 shows that only promethium has not been found in nature, whereas 99 elements are found terrestrially and technetium is found in stars.
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Determination of REE, Ba, Fe, Mg, Na and K in carbonaceous and ordinary chondrites
TL;DR: In this paper, the exact determination of REE and Ba abundances in three carbonaceous (Orgueil Cl, Murchison C2 and Allende C3) and seven olivine-bronzite chondrites were carried out by mass spectrometric isotope dilution technique.
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A chemical-petrologic classification for the chondritic meteorites.
W. R. Van Schmus,John A. Wood +1 more
TL;DR: In this article, a two-dimensional classification grid based on chemical and petrologic subdivisions of chondritic meteorites is proposed, which extends the current chemical subdivisions to account for varying petrolic (implied metamorphic) properties within the primary chemical groups.