Lauretta D S, Lodders K, Fegley B
Planetary Chemistry Laboratory, Department of Earth and Planetary Sciences, Campus Box 1169, Washington University, One Brookings Drive, St. Louis, MO 63130-4899, USA.
Science. 1997 Jul 18;277(5324):358-60. doi: 10.1126/science.277.5324.358.
Sulfurization of meteoritic metal in H2S-H2 gas produced three different sulfides: monosulfide solid solution [(Fe,Ni)1-xS], pentlandite [(Fe,Ni)9-xS8], and a phosphorus-rich sulfide. The composition of the remnant metal was unchanged. These results are contrary to theoretical predictions that sulfide formation in the solar nebula produced troilite (FeS) and enriched the remaining metal in nickel. The experimental sulfides are chemically and morphologically similar to sulfide grains in the matrix of the Alais (class CI) carbonaceous chondrite, suggesting that these meteoritic sulfides may be condensates from the solar nebula.
在H₂S - H₂气体中对陨铁进行硫化处理产生了三种不同的硫化物：单硫化物固溶体[(Fe,Ni)₁₋ₓS]、镍黄铁矿[(Fe,Ni)₉₋ₓS₈]和一种富磷硫化物。残余金属的成分未发生变化。这些结果与理论预测相反，理论预测认为太阳星云硫化物形成会产生陨硫铁（FeS）并使剩余金属富含镍。实验得到的硫化物在化学和形态上与阿莱（CI类）碳质球粒陨石基质中的硫化物颗粒相似，这表明这些陨石硫化物可能是太阳星云的冷凝物。
