An increasing number of studies are being presented demonstrating that volcanic glasses
can be heterogeneous at the nanoscale. These nano-heterogeneities can develop both …

Sulfur (S) in the mantle is conventionally assumed to be exclusively stored in accessory
sulfide phases, but recent work shows that the major silicate minerals that comprise> 99% of …

The redox state of silicate melts influences crystallization, element partitioning, and
degassing behavior. Synchrotron-based micro-X-ray absorption near edge structure …

The lunar surface and interior are highly reducing, resulting in the virtually absence of ferric
ion. However, recent studies suggest the presence of ferric iron in lunar samples, and in …

The so-called «iron in glass problem» has always existed in traditional glassmaking.
Industrial glass is made, as a rule, from quarry raw materials (sand and limestone), which …

Abstract Melt Fe3+/FeT ratios are widely used as a proxy for the oxygen fugacity (fO2) in
magma systems. A particular challenge is a difficulty in quantifying the Fe2+ and Fe3+ …

All natural materials and most manufactured technologically relevant materials contain a
variable but consequent amount of multivalent elements, like iron. Many physicochemical …

Concrete deterioration due to the presence of oxidizable iron sulfides in coarse aggregates
is a major durability issue in certain regions of the world. It is important to identify and …