The distribution of some trace elements in iron meteorites, as determined by neutron activation

Smales, A.A.; Mapper, D.; Fouché, K.F.

doi:10.1016/s0016-7037(67)80026-7

Cited by 111 publications

(28 citation statements)

References 71 publications

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“…The reproducibility of the analyses is better than 5% for all elements except Au (7%), which has a relatively low concentration. Our LA-ICP-MS data agree with corresponding literature data (Chen and Wasserburg 1996b;Cook et al 2004;Pernicka and Wasson 1987;Ryan et al 1990;Scott 1978b;Smales et al 1967) within 12%, except for W, which is 19% lower than the old INAA value of Scott (1978b). Fig.…”

Section: Reproducibility and Accuracy Of The La-icp-ms Datasupporting

confidence: 90%

Differentiation of metal‐rich meteoritic parent bodies: I. Measurements of PGEs, Re, Mo, W, and Au in meteoritic Fe‐Ni metal

Petaev

Jacobsen

2004

Meteorit & Planetary Scien

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The narrow ranges of variations of Mo and Pd concentrations within individual groups of iron meteorites suggest that these elements can provide important insights into the evolution of parent bodies of iron meteorites. Under certain assumptions, the Mo concentrations can be used to estimate mass fractions of the metal-sulfide cores in the parent bodies of iron meteorites. It appears that a range of Pd variations within a group of iron meteorites can serve as a useful indicator of S content in the core of its parent body.

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Section: Reproducibility and Accuracy Of The La-icp-ms Datasupporting

confidence: 90%

Differentiation of metal‐rich meteoritic parent bodies: I. Measurements of PGEs, Re, Mo, W, and Au in meteoritic Fe‐Ni metal

Petaev

Jacobsen

2004

Meteorit & Planetary Scien

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“…Also included in Figure 2 are data from an array of earlier sources using various techniques (Goldberg et al, 1951;Lovering et al, 1957;Wetherill, 1964;Nichiporuk and Brown, 1965;Smales et al, 1967;Herpers et al, 1969;Moore et al, 1969;Schaudy et al, 1972;Buchwald, 1975). The data of Goldberg et al (1951), Wetherill (1964), and Smales et al (1967) agree particularly well with the LA-ICP-MS results.…”

Section: Comparison To Literature Datamentioning

confidence: 99%

Compositions of group IVB iron meteorites and their parent melt

Campbell

Humayun²

2005

Geochimica et Cosmochimica Acta

118

103

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The concentrations of P, V, Cr, Fe, Co, Ni, Cu, Ga, Ge, As, Mo, Ru, Rh, Pd, W, Re, Os, Ir, Pt, and Au in the group IVB iron meteorites Cape of Good Hope, Hoba, Skookum, Santa Clara, Tawallah Valley, Tlacotepec, and Warburton Range have been measured by laser ablation inductively coupled plasma mass spectrometry. The data were fitted to a model of fractional crystallization of the IVB parent body core, from which the composition of the parent melt and metal/melt distribution coefficients for each element in the system were determined, for a chosen value of D(Ni). Relative to Ni and chondritic abundances, the parent melt was enriched in refractory siderophiles, with greatest enrichment of 5ϫ chondritic in the most refractory elements, and was strongly volatile-depleted, down to 0.00014ϫ chondritic in Ge. Comparison to an equilibrium condensation sequence from a gas of solar composition indicates that no single temperature satisfactorily explains the volatility trend in the IVB parent melt; a small (Ͻ1%) complement of ultrarefractory components added to metal that is volatile-depleted but otherwise has nearly chondritic abundances (for Fe, Co and Ni) best explains the volatility trend. In addition to this volatility processing, which probably occurred in a nebular setting, there was substantial oxidation of the metal in the IVB parent body, leading to loss of Fe and other moderately siderophile elements such as Cr, Ga, and W, and producing the high Ni contents that are observed in the IVB irons. By assuming that the entire IVB parent body underwent a similar chemical history as its core, the composition of the silicate that is complementary to the IVB parent melt was also estimated, and appears to be similar to that of the angrite parent.

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“…A further piece of evidence that Paneth's Iron was different from Toluca was the analyses of Smales et al (1967) for "Toluca" that were in disagreement with analyses of other workers in spite of his record of quality work. His analyses had probably been carried out on the specimen from the Natural History Museum.…”

Section: Paneth'smentioning

confidence: 99%

“…In this way, pieces of Canyon Diablo were scattered throughout Arizona (Wasson, 1968). The Eskimos of Greenland traded pieces of the Cape York shower throughout the northern parts of the Americas and samples of cold-worked tools made from this iron have been found as far away as Hudson Bay (Buchwald, 1975 During the earlier years of meteorite analysis only the noble metals Au and Ir were quantified with any frequency and the analyst relied on in strumental neutron activation analysis (INAA) or radiochemical NAA (RNAA) for this purpose (Smales et al, 1967). Later the NAA methods were used to extend the range of analyses to Os, Ru, and Pt (Pernicka and Wasson, 1987).…”

Section: Introductionmentioning

confidence: 99%