CONSIDERATIONS ON THE PRESENCE OF PLATINUM AND PLATINUM GROUP ELEMENTS IN MINERALIZATIONS FROM ROMANIA.

Abstract

Platinum Group Elements (PGEs) are among the rarest metals in the world and are also considered as critical metals/minerals. Their economically important occurrences are limited to orthomagmatic deposits, porphyry-type hydrothermal deposits, alluvial accumulations (placers), and residual-type deposits. In Romania, Pt was firstly mentioned in 1853 by Karl Zerrenner in the alluvial deposits from Pianu, Sebeș Mts., and later, in 1855, by Michael Johann Ackner. Other occurrences in which ptatinum and PGEs were reported are Vâlsan Valley (Făgăraș Mts.), associated with metamorphosed basic rocks, and Southern Banat (Tișovița-Iuți area), associated with serpentinised ultrabasic rocks. Moreover, a platinum mineral, namely sperrylite, was mentioned in 1966 by Rădulescu and Dimtrescu in Holbav area (Făgăraș Mts.), associated with ultrabasic rocks bodies within the metamorphic sequences. The presence of Pt and PGEs in the mineralizations from Romania has been mostly qualitatively highlighted until now. Further investigations will allow to enlarge the knowledge about the presence of PGEs at a qualitative level and eventually in other occurrences. Further investigations will allow us to expand the knowledge about the qualitative presence of PGEs and eventually in other occurrences in Romania.