Gold is generally associated with arsenopyrite and low base metal content, but also occurs as
native metal.
Summary: TEHRAN (FNA)- Researchers describe the first observation of a native ferroelectric metal: a
native metal with bistable and electrically switchable spontaneous polarization states -- the hallmark of ferroelectricity.
Adhesive interactions of polyurethane monomers with
native metal surfaces.
Cobalt(II), being a d7 ion used as a probe, can substitute the
native metal into both structural and catalytic metal-binding sites of the examined proteins.
He concluded that the coating of silver oxide on the surface of the metal was giving off ions--[Ag.sup.1+] +, [Ag.sup.2+] and [Ag.sup.3+]--and that it was these ions, not the
native metal, that were responsible for the antibacterial effect.
The presence of
native metal melt inclusions does not suggest that all Ag and Bi were deposited from metal-rich melts; however, mobilization of
native metals may be responsible for some of the observed textures in the veins and for some remobilization and concentration of Ag and Bi within the five-element (Ni-Co-As-Ag-Bi) veins at Cobalt and similar occurrences worldwide.
The surface area of mill scale coating or of rust is greater than that of the underlying
native metal (steel) and the thicker the mill scale coating the more adsorption is expected to occur.
Here, microorganisms change me into methylated organic forms that, unlike my
native metal, are easy for organisms to absorb.
Because the span of this shiny
native metal mass was so impressive it was called "The Silver Sidewalk." The Natural History Museum of Los Angeles displayed a rich chunk from this odd occurrence.
Hubert especially liked
native metals; his collection contains two platinum nuggets from Russia, as well as 70 native gold specimens, including an amazing ribbon gold from Garden Valley, California; a large leaf gold from Jamestown, Tuolumne County, California; several fine Eagle's Nest mine golds; and two large and spectacular, somewhat waterworn gold crystals from Icabaru, Bolivar, Venezuela.