CARBONE C.

The new mineral species arsenmedaite, ideally Mn2+As5+Si5O18(OH), has been discovered in quartz veinlets in the braunite ore deposit of the Molinello mine, Graveglia Valley, Ne, Genova, Liguria, Italy. It occurs as orange-reddish prismatic crystals, up to 200 lm in length, with a vitreous lustre, associated with braunite, quartz, calcite,...

River estuaries, continental shelf, and sediment contamination are closely linked from the point of view of sediment transport and diffusion that is governed by different factors such as sea waves and currents, river flows and floods, and sediment characteristics. Taking these factors into consideration, we have examined marine environmental...

A study on the Rare Earth Element (REE) distribution in the bottom sediments of the Gulf of Tigullio (north-west Italy) was conducted. The results constitute a baseline for this zone of the Ligurian Sea and enabled the obtaining of valuable information on the origin and transport of sediments in the gulf. The distribution of REEs is...

Layered doubled hydroxides (LDHs) belong to the hydrotalcite supergroup, their crystal structure is composed of brucite-type layers in which a trivalent cation partially substitutes a divalent cation, generating a net positive charge balanced by an anionic species in the interlayer giving the general formula: [M2+ 1-x N3+x (OH)2]x+(Anx/ n)x- *...