Named in honor of Joseph Wilson Greig (1895, Ontario, Canada - 22 October 1977, Lewistown, Pennsylvania, USA), a mineralogist and physical chemist at at the Geophysical Laboratory of …

Greigite is the sulfur analog of magnetite and has a similar inverse spinel structure (Fig. 8). The unit cell of greigite has a = 9.876 Å and consists of eight Fe 3 S 4 moieties. Eight Fe atoms …

2021年10月14日 · Greigite is an iron sulfide mineral with formula Fe3S4. It has a role as a catalyst. It is a sulfide mineral, a member of iron(2+) sulfides and a member of iron(3+) sulfides.

2016年2月12日 · Greigite (Fe 3 S 4) is a ferrimagnetic mineral that was first discovered in lake sediments from California, USA 1. It is probably formed by bacteriological reduction of iron 2 …

2011年1月29日 · Greigite is an inverse spinel and a collinear ferrimagnet with antiferromagnetic coupling between iron in octahedral and tetrahedral sites. The crystallographic c axis is the …

Greigite is the thiospinel of iron (Skinner et al., 1964). It has the formula Fe 3 S 4. It is the sulfur analogue of magnetite. Both natural and synthetic greigite are sooty black powders that are …

2023年9月30日 · Greigite forms as an intermediate phase along the pyrite reaction pathway. Despite being considered metastable, it is observed in numerous shallow natural systems, …

2022年7月18日 · Greigite (Fe 3 S 4) is a ferrimagnetic iron-sulfide mineral that forms in sediments during diagenesis. Greigite growth can occur diachronously within a stratigraphic profile, …

Grey metallic to black, strongly magnetic, greigite grains in clay. These grains comes from a small amount of "greigite in yellow clay" obtained by Dr. Luciano De Zen from the "Geomineralogical …

By David Rickard, Andrew P. Roberts & 1 more. Greigite is a stable Fe-S phase, an alternative end-point to pyrite in iron sulfide transformation, crucial for understanding ancient Earth …