• Size: 31.2 km2
• Ownership: 100% Jadar Resources
• Status: Permit Granted
• Targeted mineralisation: Jadar style hydrothermal sediment hosted Li-B deposits
• Consists of a granite complex intruding highly metamorphosed Proterozoic gneisses, schists, quartzites and marbles that are overlain by Miocene silts, sands and gravels
• The geology of the district has been studied since the early 19th Century however, only mapped & described by various govt & academic geo’s since the 1930s including detailed studies of the granitoids. Mineralised, especially lithium and tin, bearing pegmatites and greisens were also recognised in the granitoids.
The Krajkovac project area is located in the south-east of Serbia within the Nisava administrative district with Nis the administrative centre.
Figure 1 - geology of the Krajkovac project area
The Krajkovac project is located within the Pomoravlje district in a hilly area also known by
its historical name Levač, about 30 km from the administrative centre at Jagodina and 350km from the capital Belgrade.
The Krajkovac project consists of a granite complex intruding highly metamorphosed Proterozoic gneisses, schists, quartzites and marbles that are overlain by Miocene silts, sands and gravels.
Five small granitoid intrusions have been discovered in the vicinity of Krajkovac that have been inferred to be linked at depth to form a single large intrusion. Two phases have been identified: the first is fine-grained biotite rich granite monzonite/granodiorite followed by younger leucocratic granite monzonites with tourmaline and some muscovite. Rb/Sr ratios in biotite indicate an age of 210 million years.
The presence of cassiterite in the eroded sediments and micro-element Sn in petrogenic minerals, especially in muscovite (100-270 ppm), is an indication of the existence of greissens in some of the granites of Krajkovac.
Middle Miocene sediments lie transgressively over the crystalline schists. These sediments range from coarse conglomerates to silts derived from the surrounding basement rocks as well as marl and limestone beds.
Anomalous tin has been found in the Neogene sediments indicating possible greisens in the district. The granitic intrusions will be mapped and sampled to test for greisens and pegmatite dykes. If mineralised igneous rocks are located the Neogene sediments may be tested for Jadar style mineralisation by drilling targeted areas.
Exploration and Mining History
The geology of the Krajkovac district has been studied since the early 19th Century however the geology of the Krajkovac region has only been mapped and described by various government and academic geologists since at least the 1930s including detailed studies of the granitoids.
Mineralised, especially lithium and tin, bearing pegmatites and greisens were also recognised in the granitoids.
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