Iron became the dominant material in the core, intermixed with small amounts of several siderophile
("iron-loving") elements such as nickel and sulfur.
and Strongly Chalcophile Elements in High-Temperature Geochemistry and Cosmochemistry
Today, roughly 98 percent of Earth's highly siderophile
elements are tucked away in its iron-rich core.
It was noted that density variations are due to a larger or smaller amount of siderophile
elements in the rock.
Theoretically, when a planet or large body differentiates enough to form a core, certain elements including osmium, iridium, ruthenium, platinum, palladium, and rhenium-known as highly siderophile
elements-are segregated into the core.
Waterman, rather than making rock come alive theoretically in the way Russell does, chooses to reanimate it by reviving the few remnant rockbound organisms--endolithic lichens and siderophile
Its impact origin was confirmed with the discovery of shatter cones (Dietz 1960), shocked quartz (Carlton and others 1998; Koeberl and others 1998), and coesite (Cohen and others 1961) and is supported by the enrichment of siderophile
elements at the center of the structure (Carlton and others 1998; Koeberland others 1998).
Third, the chalcophile (Cu, Pb, Zn, Cd, Mo, As, Ag, Bi) and siderophile
elements (Ni, Co) form a large group occupying the middle of the diagram.
interelement variations in the Cretaceous-Tertiary boundary sediments from Caravaca, Spain.
alloys in the crushed ore are amenable to gravity concentration.
Platinum and gold are among eight occupants of the periodic table belonging to the category known as the highly siderophile
Thus, density varies in relation to the presence of siderophile