• Ownership: 100% Raiden Resources
• Status: License granted
• Permit Size: 74Km2
• Targets: Porphyry / Epithermal and Skarn mineralisation
• Dominated by Cretaceous age volcano sedimentary sequences which are analogous to the geology within the Timok Magmatic Complex, which is a world class copper-gold district located along the same structural trend
• Government agencies have defined zones of anomalism consistent with porphyry style mineralisation
• Well-developed infrastructure with rail, water and power available within the license area
Rio Tinto Joint Venture Agreement
In March 2018, the company announced that it had entered into a Joint Venture Agreement wiht Rio Tinto Mining and Exploration limited with respect to the Donje Nevlje project. For further information please refer to Raiden Resources’ press release.
The Donje Nevlje project is located in the southeast of Serbia, with the Donje Nevlje project bounded by the administrative border with Bulgaria.
Dimitrovgrad is the nearest town to Donje Nevlje project area, and it is about 360km from Belgrade by highway to Nis and main road to Dimitrovgrad. From Dimitrovgrad there are several small roads and forest tracks, into the project area, all of which can be readily negotiated with a 4-wheel drive vehicle. The main railway line from Serbia to Bulgaria (Nis to Sofia) passes through Dimitrovgrad, and is served by passenger as well as freight trains.
Figure 1 – Donje Nevlje project location
Donje Nevlje Geology
The geology of the Donje Nevlje licence represents the southern extension of the Bor Metallogenic Zone and comprises similar Cretaceous volcanic and sub-volcanic lithologies, with younger Cretaceous clastic sedimentary rocks and limestones. The Donje Nevlje project is approximately 125km southeast of the productive Timok Magmatic Complex, which is host to the Bor and Majdanpek districts of copper-gold mineralization.
Figure 2 – Donje Nevlje geolog
Geological mapping and exploration in the 1960’s confirmed the compatibility of the stratigraphy and lithologies, primarily andesite volcanics and pyroclastics of Upper Cretaceous age, with those of the Timok Magmatic Complex The project was therefore considered perspective for porphyry, epithermal, and skarn copper-gold mineralization (Csongradi, 2012).
Figure 3 –Outcropping sample from the Donje Nevlje project. Malachite and Azurite mineralization on fracture surfaces in porphyritic Andesite.
No records were available for work undertaken before World War II. Based on aconsulting report compiled for Empire minerals (Csongradi, 2012), in 1925 the first exploration work for copper mineralization in the Donje Nevlje area consisted of two short adits that were excavated near Borovo village. In 1936 another adit, only 30 m long, was excavated in Zelengrad area. In 1938/39, the French mining company that owned and operated Bor copper mines undertook further exploration in the Donje Nevlje area. This campaign included two shallow drill holes (120 m in total), but exploration was discontinued due to the disappointing results (Csongradi, 2012).
In the 1960’s the Nis branch of Yugoslav Geological Survey, together with Geological Department of the Copper Institute in Bor, recommenced mineral exploration in the Donje Nevlje area. This work concluded that the lithologies and stratigraphical sequence are consistent with those in the Timok Magmatic Complex, which is located about 125km to the northwest and is the host to important copper and gold deposits at Bor and Majdanpek (Csongradi, 2012). An historic, unvalidated magnetic anomaly map shows apparent magnetic anomalism similar to one over the Timok deposit.
Recent work by Empire Minerals (2008-2011) included ground magnetic surveys, as a follow-up to anomalies detected in airborne surveys, and soil geochemical sampling programmes. Both activities are indicated as having confirmed anomalies identified in exploration work ca 1960’s (Csongradi, 2012).
Induced polarization surveys in 2011, across areas of coincident copper anomalism and magnetic anomalism’yielded domains of high chargeability considered to be targets for further exploration. These are yet to be tested with drilling (Csongradi, 2012).