Pallasites—metal composition, classification and relationships with iron meteorites
Pallasites—metal composition, classification and relationships with iron meteorites
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橄榄石——金属成分、分类及其与铁陨石的关系
DOI：
10.1016/0016-7037(77)90262-9
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发表时间：
1977
影响因子：
5
通讯作者：
E. Scott
中科院分区：
文献类型：
--
作者：
E. Scott
测定了28种不同的钯金属中Au、As、Co、Ga、Ge、Ir、Ni和W的浓度，并对6种可能成对的钯金属进行了测定，以帮助阐明它们的来源。大多数分为两类：没有。Ni (%)Ga (μg/g)Ge (μg/g)Au (μg/g)Fa（摩尔%）主组197.8 - 11.716 - 2629 - 651.7 - 3.011 - 13 eagle站trio314 - 164.5 - 675 - 1200.8 - 1.019 - 20主组Ni与Ga、Ge呈负相关，与Au呈正相关，可能与橄榄石中Fa含量呈正相关。鹰站三人组的其他成员是冷湾和伊扎维西斯。Rawlinna， Springwater和Phillips县的金属成分适合于高镍主群成员，但铁矾含量过高，不适合主群趋势。格洛列塔山和帕夫洛达似乎是独特的pallasites。Ilimaes, Antofagasta， olague和Salta可能是Imilac的一部分，Imilac是主要的群体成员。在Ga-Ge图上，主要类群pallasites重叠在IIIAB铁陨石场上，金属的Au、As、Ir、Ni和W含量与高Ni IIIAB铁非常接近。这两个群体很可能是在同一个母体中形成的。鹰站三重奏可能与某些异常的高Ge/Ga比的铁有关，并且可能是在更氧化的环境中形成的。
Concentrations of Au, As, Co, Ga, Ge, Ir, Ni and W were determined in the metal of 28 different pallasites plus 6 which are probably paired, to help elucidate their origin. Most divide into two clusters:No.Ni (%)Ga (μg/g)Ge (μg/g)Au (μg/g)Fa (mole %)Main group197.8–11.716–2629–651.7–3.011–13Eagle Station trio314–164.5–675–1200.8–1.019–20In the main group Ni is negatively correlated with Ga, Ge and positively with Au and probably with the Fa content of the olivine. The other members of the Eagle Station trio are Cold Bay and Itzawisis. Rawlinna, Springwater and Phillips County have metal compositions appropriate to high-Ni main group members but fayalite contents are too high for main group trends. Glorieta Mountain and Pavlodar appear to be unique pallasites. Ilimaes, Antofagasta, Ollague and Salta are probably pieces of Imilac, a main group member.On a Ga-Ge plot, main group pallasites overlap the field of IIIAB iron meteorites and Au, As, Ir, Ni and W contents of the metal are very close to those of the high-Ni IIIAB irons. It is likely that both groups formed in the same parent body. The Eagle Station trio might be related to certain anomalous irons with high Ge/Ga ratios and may have formed in a more oxidizing environment.
DOI：
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发表时间：
2007
期刊：
Lunar and Planetary Science Conference XXXVIII 38
影响因子：
--
作者：
原田 知明;保科 洋介;吉村 英恭;C.Okamoto
通讯作者：
C.Okamoto