Indium is a typical chalcophile element of the Earth’s crust, with a very low average content that seldom forms specific minerals, occurring mainly as dispersed in polymetallic sulphides. Indium recovery is based primarily on zinc extraction from sphalerite, the prototype of so-called tetrahedral sulphides, wherein metal ions fill half of the available tetrahedral sites within the cubic closest...

Volatile metals are emitted at significant rates as gases and particulates from volcanoes, although their speciation, bioreactivity longevity during atmospheric transport essentially unknown. Ice cores provide detailed yet largely unexplored long-term records of volcanogenic volatile in air precipitation. Here we evaluate the source speciation (cadmium, lead, bismuth, thallium) Antarctic ice ma...

Abstract. Earth's long-term cycling of carbon is regulated from mid-ocean ridges to convergent plate boundaries by mass transfers involving mantle rocks. Here we examine the conversion peridotite listvenite (magnesite + quartz rock) during CO2 metasomatism along basal thrust Semail Ophiolite (Fanja, Sultanate Oman). At outcrop scale, this transformation defines reaction zones, serpentinized per...

available online at http://meteoritics.org Geochemistry of diogenites: Still more diversity in their parental melts J. A. BARRAT1, 2*, A. YAMAGUCHI3, R. C. GREENWOOD4, M. BENOIT2, 5, J. COTTEN1, 2, M. BOHN1, 2, and I. A. FRANCHI4 1Université Européenne de Bretagne, France 2Université de Brest, CNRS UMR 6538 (Domaines Océaniques), I.U.E.M., Place Nicolas Copernic, 29280 Plouzané Cedex, France 3A...