geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Highly siderophile elements (PGE, Re and Au) in mantle xenoliths from the West Eifel volcanic field (Germany)


, : Highly siderophile elements (PGE, Re and Au) in mantle xenoliths from the West Eifel volcanic field (Germany). Chemical Geology 196(1-4): 77-105

Mantle peridotite xenoliths ranging in modal composition between fertile lherzolites and modally metasomatized harzburgites, and magmatic pyroxenite xenoliths from the West Eifel and Vogelsberg volcanic fields (Germany) have been analyzed for their whole rock major and minor elements, six platinum-group elements PGE (PGE: Os, Ir, Pt, Ru, Rh, Pd), Re and Au, rare earth elements (REE), and several other trace elements (e.g., As, Ta). The bulk rock Ir concentrations range from 0.23 to 9.07 ng/g (total PGE contents range between <5.9 and >43.2 ng/g), exceeding the range previously found in mantle rocks. Two pyroxenite samples show large variabilities in their PGE concentrations, with Ir contents of 0.23 and 4.30 ng/g. No systematic dependence of the contents of PGE on the degree of fertility of the host rock was found.Three harzburgitic samples (1343, 589, 211) with significantly higher concentrations of all PGE in comparison to samples of similar fertility reflect the mobility of these elements in a metasomatized mantle. Approximately unfractionated PGE patterns (with the exception of Re) of the enriched samples indicate that the PGE were apparently transported with a single phase. The Al (sub 2) O (sub 3) vs. (super 187) Os/ (super 188) Os correlation for Eifel xenoliths reported by Schmidt and Snow [Contrib. Mineral. Petrol. 143 (2002) 694] indicates that massive redistribution of Os must have occurred recently. The simultaneous enrichment of some samples in Os, As and light REE and other incompatible lithophile elements suggests a single S-, As- and PGE-containing phase that was responsible for the metasomatism.

US$19.90

DOI: 10.1016/s0009-2541(02)00408-4


Other references

Kaunitz, J.; Koller, C., 1971: Carl Koller. JAMA 215(3): 488-488

Donahoo J.S.; Brawley R.K.; Gott V.L., 1977: The heparin coated vascular shunt for thoracic aortic and great vessel procedures a 10 year experience. Annals of Thoracic Surgery 23(6): 507-513

Mondal, M., S.; Nakazato, M.; Matsukura, S., 2002: Characterization of orexins (hypocretins) and melanin-concentrating hormone in genetically obese mice. Orexins (hypocretins) and the melanin-concentrating hormone (MCH) are neuropeptides localized to the lateral hypothalamic area and are potential regulators of energy homeostasis. Using highly sensitive radioimmunoassay for orexins and MCH, we dete...

Anonymous, 2000: International Symposium on Molecular and Clinical Aspects of the Regulation of Ovarian Function Impact on the Reproductive Health of Women. Molecular & Cellular Endocrinology. 164(1-2): 251-274, E 20

Tang, W.; Newton, R.J.; Weidner, D.A., 2006: Genetic transformation and gene silencing mediated by multiple copies of a transgene in eastern white pine. An efficient transgenic eastern white pine (Pinus strobus L.) plant regeneration system has been established using Agrobacterium tumefaciens strain GV3850-mediated transformation and the green fluorescent protein (gfp) gene as a reporter in this i...

Schank R.C., 1980: Language and memory. The progression of conceptual representational theories developed during the last 10 yr, and some of the research models built to implement those theories were described. Modeling human memory was discussed. A theory of MOP (Memory Organization Pa...

Flaxman, B.A.; Sosis, A.C.; Van Scott, E.J., 1973: Changes in melanosome distribution in Caucasoid skin following topical application of nitrogen mustard. Journal of Investigative Dermatology 60(5): 321-326

Ciampi, A.; Schiffrin, A.; Thiffault, J.; Quintal, H.; Weitzner, G.; Poussier, P.; Lalla, D., 1990: Cluster analysis of an insulin-dependent diabetic cohort towards the definition of clinical subtypes. Clinical and biochemical data on 111 consecutive insulin-dependent diabetic children enrolled in a longitudinal prospective study were analyzed to determine if more than one clinical expression of Type I diabetes exists. Use of multivariate statis...

Nagy, K.K.; Perez, F.; Fildes, J.J.; Barrett, J., 1999: Optimal prosthetic for acute replacement of the abdominal wall. Objective: To compare two prostheses for use in acute abdominal wall replacement in the presence and absence of peritonitis. Materials and Methods: Forty male Sprague-Dawley rats underwent full-thickness removal of a 2 X 3 cm portion of their ante...

Haque, M.S.ddiqui, A., 1982: Histochemical and electrophoretic studies on phosphatases of some Indian trematodes Gigantocotyle explanatum from the liver and Gastrothylax crumenifer from the rumen of the water buffalo (Bubalus bubalis) and Echinostoma malayanum and Fasciolopsis buski from the small intestine of the pig, India. Journal of helminthology 56(2): 111-116