AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
|
|||||||
The STUDIA UNIVERSITATIS BABEŞ-BOLYAI issue article summary The summary of the selected article appears at the bottom of the page. In order to get back to the contents of the issue this article belongs to you have to access the link from the title. In order to see all the articles of the archive which have as author/co-author one of the authors mentioned below, you have to access the link from the author's name. |
|||||||
STUDIA GEOLOGIA - Issue no. 1 / 2001 | |||||||
Article: |
CONTRIBUTIONS TO THE STUDY OF THE ALLUVIAL GOLD FROM VALEA PIANULUI AREA (ALBA DISTRICT). Authors: HOREA BEDELEAN, AURA BEDELEAN. |
||||||
Abstract: Contributions to the Study of the Alluvial Gold from Valea Pianului Area (Alba District). Pianu de Sus area (Alba district) is located in the north-eastern part of the Sebeş Mountains. The region consists of metamorphic (Sebeş-Lotru group), magmatic (granites and quartziferous porphyries and pegmatites) and sedimentary deposits (Senonian, Neogene and Quaternary age). Granulometric studies, separations of the heavy fractions, optic and electronic microscopic investigations were performed on the alluvial deposits and detritic sedimentary formations. The analysed gold shows tipical morphology for two grains types: primary and secondary. From a chemical point of view was evidenced electron microprobe The chemical analyses, performed by using electron microprobe, shows a high amount of gold and silver. | |||||||