In this study, we performed a comparative analysis of the combustion behavior pyrite, pyrrhotite, and pyrite-pyrrhotite mixture (mixed mineral) powders in an air atmosphere. To study influence pyrrhotite content mixed mineral on air, thermogravimetric mass spectrometry, X-ray diffraction analysis, scanning electron microscopy were employed. The results indicated that lead to weight gain mineral...

Monoclinic pyrrhotite (Fe7S8) is widely claimed to carry magnetizations acquired during early diagenesis in anoxic sedimentary environments. In contrast, geochemical literature indicates that pyrrhotite formation is extremely slow below 180 8C, which makes it a highly unlikely carrier of early diagenetic remanences in sediments. This view is confirmed by the occurrence of late diagenetic Fe7S8 ...

Introduction Iron-nickel sulfides are found in most or all solar system environments, and are probably the only minerals found in all extraterrestrial materials on hand. Despite this ubiquity, they have only just begun the attention they deserve. The most common Fe-Ni sulfides in chondrites are troilite (FeS), pyrrhotite (Fe 1-x S) and pentlandite (Fe,Ni) 9 S 8. Troilite is believed to have res...