A new scheme of nomenclature for the pyrochlore supergroup, approved by the CNMNC–
IMA, is based on the ions at the A, B and Y sites. What has been referred to until now as the …

Beryllium is a quintessential upper crustal element, being enriched in the upper crust by a
factor of 30 relative to primitive mantle, 2.1 vs. 0.07 ppm. Most of the 112 minerals with Be as …

We delineate an approximately 240-km-long, north-trending Au-Pd-Pt belt in Minas Gerais,
Brazil, which hosts hydrothermal Pd-Pt-bearing gold mineralization in its southern part …

The unique minerals of the Au-Pd-Hg system in gold grains from heavy concentrates of the
Itchayvayam placers and watercourses draining and ore samples of the Barany outcrop at …

A região de Galiléia é conhecida mundialmente pelo encontro periódico de minerais raros
e/ou de coleção, originados de corpos pegmatíticos que se relacionam geneticamente a …

The Córrego Bom Sucesso alluvial deposit near Serro, Minas Gerais, probably provided the
specimens from which the element palladium was first discovered. Its Pt–Pd nuggets are …

Tantalate samples, supposedly of the columbite group, were collected in the Borborema
Pegmatitic Province, aiming to test the Mn/(Mn+ Fe) and Ta/(Ta+ Nb) ratios as geochemical …

Arborescent, botryoidal and reniform grains of platinum and palladium from Córrego Bom
Sucesso, Serro, Minas Gerais, Brazil, were investigated by scanning electron microscopy …

Native palladium is rare and occurs in oxidizing environments (hematite stability field) and
consistently has very low contents of other metals. On the other hand, gold may contain …

Abstract Qingheiite-(Fe 2+), ideally Na 2 Fe 2+ MgAl (PO 4) 3, is a new mineral species from
the Sebastião Cristino pegmatite, Minas Gerais, Brazil. It occurs as rims around frondelite …