with the and Jurassic beds and manganiferous beds eroded. Lithology The Manganese Ore is the main component of the formation, and it's distinctive characteristic element. The Úrkút Manganese ores occur on marine sedimentary rocks composed mainly of bioclastic Limestone, radiolarian Clay Marlstone, and dark-gray to Black Shale. The Origin of the Local Manganese Ores based on the presence of siliceous manganese ores and antauthigenic Silica points to the volcanogenic-sedimentary origin of this Mn-ore deposits Manganese nodules are widely distributed in the area in Jurassic rocks, mainly on the Lower Jurassic, but younger nodules also occur. The Black Shale with Mn-carbonate get its maximum deposition on the Toarcian, concretely during the Tenuicostatum–Falciferum Ammonite zones in the coeval Sachrang Formation, Strubberg Formation and Allgäu Formation in the Northern Calcareous Alps and the Eastern Alps (Austria, Germany and Switzerland), while Úrkút and related deposits were the regional equivalent in the Transdanubian Range. There are other deposits with Shale and associated Mn particles on contemporaneous oxic deposits occur that formed under similar environmental conditions. The Úrkút Manganese deposit has been investigated geologically, mineralogically and chemically. It has several properties, including very fine grain size (~ 1 μm), an enrichment of metals over a geologically very short time (-500 thousand years). Both Metals and the Manganese have been related with local hydrothermal vent systems, where the metal enrichment was a result of microbial activity. There are at least three types of Manganese deposits that occur close in proximity. The first, those with cherty Fe–Mn-oxide ore, developed on the margins of the much larger carbonate ore body, whose origin has been related with proximal fracture systems, being composed by varicolored metalliferous Claystone. Other type includes the so-called Csárda-hill, where it is very cherty and iron-rich, and is suggested as originated from a low-temperature fluid flow along an associated fracture zone. This deposit is associated with sedimentary dykes, filled with red Lime-Mudstone, varicoloured Claystone, carbonate debris, or Mn oxides. The last type is the Black Shale-hosted Mn-carbonate, considered a distal ore-forming environment, where the Mn-carbonate proto-ore sediment accumulated. A hydrothermal/exhalative source of metals may have contributed to the formation of the deposits of Black Shale. This Black Shale level is composed at the base with greenish, organic-rich, pyritiferous clayey marlstone, with several enrichments such as sulfides and barite. Pyrite concretions and thin layers of phosphate and chert are found in the Shale and the lower Limestone. Phosphorus