Mineral resources of Zaporizhzhia region
Zaporizhzhia region contains numerous mineral deposits that play an important role in the development of the region’s industry and economy. From a tectonic perspective, the territory of Zaporizhzhia region belongs to two major geostructural blocks. The northern part of the region is located within the Pryazovskyi megablock of the Ukrainian Shield, which corresponds in relief to the Pryazovska Upland. The southern part lies within the Black Sea Depression, expressed in the landscape as the Black Sea Lowland.
This arrangement causes differences in the spatial distribution of mineral deposits. The main part of the deposits is confined to the northern part of the region, where deposits of iron, manganese ores, granites, porphyrites, etc. are developed. This geological position contributes to the development of the mining and metallurgical industry and provides the potential for further economic growth of the region.
Gas
The Pryazovske gas field is located in the Pryazovskyi district of Zaporizhzhia region, 6 km south of the urban-type settlement Pryazovske and is bounded in the southeast by the coast of the Azov Sea. Structurally, the field is confined to the Pryazovskyi megablock of the Ukrainian Shield. Gas-bearing potential is associated with Neogene sequences of dark clays with interbeds and lenses of gray siltstones, sands, and sandstones. The gas reservoirs are lithologically confined. The minimum depth of the top of productive horizons is 88–115 m. Gas-bearing layers pinch out toward the southern part of the field. The thickness of gas-bearing intervals ranges from 50 to 64 m, with the greatest reservoir thickness observed in the central part of the field.
Brown coal
In Zaporizhzhia region, brown coal deposits are concentrated in the northern part of the region. These deposits belong to the Dnipro brown coal basin and represent its southern flank. The Orikhivske deposit is located west of the town of Orikhiv, while the Sanzharivske deposit is situated in the northeastern part of the Huliaipole district. Coal occurs at depths of 25–50 m and has a relatively high calorific value.
Peat
There are five registered peat deposits in the region under the State Commission of Ukraine for Mineral Reserves. Geological reserves were estimated at 343 thousand tonnes. As of 01.01.2018, these deposits are not being exploited.
Iron ores
The Bilozerka iron ore district is a group of iron ore deposits in Zaporizhzhia region located on the southern slope of the Ukrainian Crystalline Shield. It was discovered by the Western Ukrainian Geological Expedition in 1948. It includes the Pivdenno-Bilozerka, Pivnichno-Bilozerka, and Pereverzivske deposits. The ore-bearing sequence is represented by Archean banded iron formations (ferruginous quartzites) with a thickness ranging from 60 to 250 m. These formations can be traced along strike for several kilometers and down-dip for more than 1,500 m. Mineralogically, the ores are of the hematite–martite type, with an average iron content of about 60.6%.
The Pryazovske iron ore district is a group of iron ore deposits located in Zaporizhzhia and Donetsk oblasts. It includes the Mariupol, Kuksunhur, and Orikhiv–Huliaipole ore fields. The ore-bearing sequences are composed of banded iron formations of Lower Proterozoic and Upper Archean age. Iron content in the ores ranges from 15% to 34%. The Kuksunhur ore field includes the Kuksunhur, Serhiivske, Korsatske, Novoukrainske, and Pavlivske deposits. The Orikhiv–Huliaipole ore field includes the Huliaipilske, Vasynivske, and Severyotersianske deposits.
Manganese ores
One of the largest manganese ore deposits in Ukraine — the Velyko-Tokmak deposit — is located in the region. It is part of the Nikopol manganese ore basin. The ore bodies are associated with an Oligocene sedimentary sequence composed of sand–silt–clay deposits lying on a weathered crystalline basement. The ore material occurs in various forms: nodules, rounded concentrically layered bodies, angular fragments, massive layers, and earthy aggregates, collectively occupying up to 50% of the host sequence. Oxide, oxide–carbonate, and carbonate ores are distinguished, with carbonate ores being predominant.
Titanium–zirconium ores
The region contains two placer districts of complex titanium–zirconium ores within the Ukrainian placer province: the Huliaipole and Tokmak districts. The Huliaipole district includes the Novomykolaivka group of deposits, as well as the Ulianivske and Stulnivske occurrences. The Tokmak district includes the Nohaiske, Berdianske, and Novopetrivske deposits. At present, these deposits are not being exploited.
Gold
The main gold-bearing object in Zaporizhzhia region is the Surozke deposit, located in the Berdiansk district. Gold mineralization is associated with the Sorokynska greenstone structure at the intersection of northwest- and northeast-trending faults. The ore-bearing assemblage includes banded iron formations, metabasalts, metakomatiites, metarhyodacites, and schists. Ore bodies occur as stratiform zones of silicified and sulfidized metasomatites within cataclased and brecciated schists, amphibolites, and magnetite quartzites. They are conformable with host rocks and are often confined to contacts between different lithologies. Gold content in some areas of the deposit reaches up to 10 g/t.
Molybdenum, tungsten, beryllium
Molybdenum mineralization is known within the Chernihivskyi, Saltychanskyi, and Obitochnyi massifs. The Surozke gold deposit is considered prospective for tungsten mineralization. Beryllium occurrences in the region are known at the “Balka Kruta” lithium pegmatite deposit, as well as within the Yelyseivske field of ceramic pegmatites.
Platinoids, germanium
Ultrabasic rocks of the Obitochna River basin and the Sorokynska zone are characterized by elevated concentrations of platinum and platinum-group elements (PGE). Occurrences of germanium in Zaporizhzhia region are known within the Huliaipole iron ore deposit.
Rare metals
Zaporizhzhia region hosts several occurrences of rare metals. The Novopoltavske apatite rare metal deposit is located about 1 km north of the urban-type settlement of Chernihivka, within Polohy and Berdiansk districts. This is a complex deposit where the main raw materials include: apatite, tantalum ores, niobium ores, strontium ores, rare earth element ores, uranium ores, fluorine, magnetite concentrate, carbonate raw materials.
The “Kruta Balka” ore occurrence is located in Berdiansk district on the right bank of the Berda River. Its main mineral resources include tantalum, niobium, and lithium ores hosted in pegmatites, as well as cesium‑, rubidium‑, and lithium-bearing ores occurring in micas and altered rocks. Associated minerals include feldspar, quartz, muscovite, granodiorite, vein quartz, and amphibolite, for which preliminary reserves have been estimated.
Graphite
Graphite deposits in the region are confined to the Temriutske–Troitske graphite-bearing field. This field includes the Temriutske, Troitske, and Sachkynske deposits, located along the middle reaches of the Berda River and in the lower parts of its tributaries near the village of Mykolaivka, about 45 km from the city of Berdiansk on the border with Donetsk region.
The Troitske graphite deposit is associated with the Berestivska syncline. The geological structure includes amphibole, biotite, garnet–biotite gneisses and calc-silicate rocks containing interlayers of amphibole gneisses with graphite. The average graphite content is about 4.5%.
Pegmatites
The Yelyseivske pegmatite field is located within the Saltychanska dome-shaped structure in the basin of the Chokrak River and includes the Zelena Mohyla and Balka Velykoho Taboru deposits. These deposits are associated with the Chokrak fault zone trending northwest. The Zelena Mohyla deposit has been fully mined out, and the quarry is now partially flooded. It contained 15 pegmatite and aplite veins, with the largest reaching up to 90 m in thickness and up to 400 m in length. In the quarry walls, graphic pegmatite veins up to 5 m thick with subvertical orientation are still visible.
The Balka Velykoho Taboru deposit is currently being mined for feldspar raw material used in the ceramic and glass industries. The vein bodies consist mainly of graphic and weakly graphic pegmatites, with lesser amounts of pegmatites of pegmatitoid, coarse-grained, and blocky textures. The largest vein reaches 630 m in length and 40–50 m in thickness.
Granite
The most widespread natural construction materials extracted in the region are granites. Both grey (Dnipro) and red granites are quarried here. Granite outcrops occur in many parts of the region. Dnipro-type grey granites are the most common; they emerge at the surface along the Dnipro, Konka, and Berda rivers. Within the region, large granite and crushed-stone deposits are being developed, including Zaporizke, Yantsivske, Saltychanske, Mokrianske, Peredatochynske, Tsarevokostiantynivske, Stulnivske, and Ostrikivske.
Diabases
Diabase deposits occur as thick dike bodies intruding migmatites, gneisses, and other crystalline rocks of the Pryazovian megablock. Diabase occurrences are located along the Kupurun gully, which flows into the upper reaches of the Korsak River valley. Greenish-grey diabases are found north of the village of Maryanivka. Dark grey diabases have been identified between the villages of Zelenivka and Yurivka. Outcrops of diabase can also be observed near the mouth of the Chokrak River, on the right bank of the Obitichna River, as well as along the Konka and Sukha Konka rivers.
Porphyrites
The most common varieties are augite and diabase porphyrites. The thickness of the deposits is generally minor. The best deposit in the region is a dike located along the channel of the Bilmanka River.
Amphibolites
Amphibolites occur as lens-shaped bodies along the Valiukhova River, the Tokmak River, and the Yushanli River, as well as near the Obitichna, Kiltychchia, and Berda rivers. Large amphibolite deposits are found in the Kainkula gully, near the village of Novoukrainka.
Kaolins
Kaolin deposits are concentrated in the central part of the region. The highest-quality kaolins occur in the Polohy district (in the upper reaches of the Konka River, bordering the crystalline massif; in the headwaters of the left tributaries of the Molochna River, along the western margin of the crystalline massif, and on the left bank of the Berda River). Kaolins are also found in the Orikhiv district. Kaolin deposits near the village of Kinski Rozdory in the Bila gully and near the town of Polohy are currently being developed.
The Polohy kaolin and refractory clay deposit extends along the banks of the Konka River as a belt about 30 km long and approximately 5 km wide. It consists of 10 separate areas. The deposits are lens-shaped, associated with Neogene sediments, and occur at depths of 3–25 m. The total thickness of the ore bodies ranges from 1.5 to 15 m.
The Biliaivka kaolin deposit is located north of the city of Vilniansk. It is associated with the Vilniansk anticline of the Mokromoskva granite massif and formed from the weathering products of crystalline rocks. At this deposit, kaolin occurs in three distinct ore bodies.
Magnesite
Near the village of Veselyanka in the Zaporizhzhia district, the Veselyanka occurrence of talc-magnesite is located and is currently not being developed. The occurrence is associated with the Konka magnetic anomaly and is composed of metamorphic complexes of the Lower Archean age, overlain by Cenozoic deposits. The ore body has a tabular shape. Talc-magnesites are greenish-grey to light-grey, dense, and have a greasy (soapy) feel. They consist mainly of talc and magnesite, which occur in approximately equal proportions within the rock.
Clays
In the Polohy and Tokmak districts, clay deposits suitable for roofing tile production are being exploited. In total, 45 clay deposits suitable for brick-and-tile production are recorded in the region, of which 4 are currently being developed. Near the hamlet of Konski Vody, clays suitable for refractory bricks occur. Refractory clays are also found near the urban-type settlement of Rozivka, close to the headwaters of the Mokrі Yaly River. Near the city of Tokmak, clays suitable for pottery production are present. Two deposits of expanded clay raw materials are known in the region — the Tokmak and Veselivka deposits — both of which are currently not being developed.
Sands
Glass sands are extracted at the Buryakivka deposit, while the Malotokmachansk, Bilohirivka, and Omelnyk deposits are not currently exploited. Two deposits of molding sands are known in the region, one of which is in development. Near the city of Polohy, fine-grained clean quartz sands occur. High-quality sands are extracted in the Polohy and Orikhiv districts and in the outskirts of Zaporizhzhia city. Significant sand reserves are also found near the villages of Novodanylivka, Terpinnya, Maiske, and the towns of Molochansk, Tokmak, and Melitopol.
Sandstones
Near the city of Vasylivka, sandstone deposits are known with a thickness of up to 6 m. To the southwest of the Polohy railway station, thick sandstone layers occur with a thickness of up to 10 m. Significant reserves are also identified in the Orikhiv, Chernihivka, and Melitopol districts.
Limestones
A limestone deposit is located on the bank of the Dnipro River near the village of Bilenke.
Opoka
The Novosemenivka deposit of siliceous raw materials is known in the region and is currently not being developed. The mineral raw material is represented by siliceous marl (trepel) and opoka (siliceous rock).
Groundwater and mineral waters
The territory of the region belongs to two major hydrogeological basins: the Black Sea Artesian Basin and the Ukrainian Fractured Water Basin. The aquifers of the Black Sea Artesian Basin are associated with sedimentary Cretaceous, Paleogene, Neogene, and Quaternary deposits. The aquifers of the Ukrainian Fractured Water Basin are related to the fractured zone of Precambrian crystalline rocks and their weathering products, as well as sedimentary Cretaceous, Paleogene, and Neogene formations. The exploitable reserves of fresh groundwater in Zaporizhzhia Region suitable for drinking water supply amount to approximately 300 thousand m³/day.
In Zaporizhzhia Region, the Azov, Berdiansk, Kyrylivka, Lazurne, Myrne, Molochansk, Melitopol, and Pryazovske deposits of potable groundwater and mineral waters are known. Drinking groundwater from the Myrne deposit is associated with the Buchak Formation of the Eocene. By chemical composition, the waters are sulfate–chloride–hydrocarbonate sodium waters without specific components, with total mineralization of 0.67 g/L. Groundwater from the Molochansk deposit is of chloride–sulfate–hydrocarbonate composition with calcium–sodium, magnesium–calcium–sodium, and sulfate–chloride–hydrocarbonate types. Mineralization ranges from 0.6 to 0.9 g/L. According to chemical and sanitary–bacteriological indicators, “Molochanska” water meets the requirements for natural table waters.
In the city of Berdiansk, several mineral water sources are located. Iodine–bromine waters of high mineralization, sodium chloride waters of medium mineralization, and therapeutic mud (peloids) are extracted here. Mineral waters of the Kyrylivka deposit are associated with the Sarmatian Stage of the Neogene and the Oligocene. Sarmatian waters are chloride–sodium, medium-mineralized and are similar in composition to the Myrhorod and Starorussian water types. Oligocene waters are chloride–sodium brines with mineralization of 50–52 g/L. The bromine content reaches balneological standards (60–100 mg/L). Therapeutic mud is also locally present at the deposit.
Zaporizhzhia region has significant reserves of various minerals and mineral waters, which play an important role in the field of energy, metallurgy, construction and other industrial sectors. The potential of these resources contributes to the development of the economy and the creation of new jobs in the region. The further development of the exploitation and use of these minerals can contribute to stimulating economic growth, raising the standard of living of the population and developing the infrastructure of the region. However, environmental aspects must also be taken into account and the sustainable and efficient use of natural resources must be ensured in order to preserve the environment and ensure the balanced development of the region.