Spatial distribution of the geochemical associations in the Babyak Mo-Ag-Au-W-Bi-base metal deposit, Western Rhodopes (Bulgaria): application of factor analysis

A new approach combining geochemical and mineralogical studies with statistical methods in the Babyak Mo-Ag-Au-W-Bi-base metal deposit is presented. The data are used for 3D geological modelling of the deposit and help to better understand the zonation of the elements and the complex geological evolution of the deposit.

First Re-Os age dating of molybdenite from Babyak Mo-Ag-Au-W-Bi-base metal deposit: evidence for Early Eocene fertile magmatic-hydrothermal system in Western Rhodopes, Bulgaria

The study presents first Re-Os age data of molybdenite from the region at Babyak Mo-Ag-Au-W-Bi-base metal deposit, in combination with electron microprobe and laser ablation inductively coupled plasma mass spectrometry results for molybdenite aggregates. The Re-Os geochronology of the analyzed samples defines age at 52.6 ± 0.2 to 53 ± 0.2 Ma of the ore-forming process in the Babyak area. It marks a distinct fertile Early Eocene event in the Cretaceous-Paleogene evolution of the Rila-West Rhodopes batholith.