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Maxim Mikityuk

Faculty of mining and geology

Department of natural resources and ecological geology

Speciality Geological survey, prospecting and exploration

The study of the spatial distribution of staurolite in the producing horizons Osipenko area in connection with the assessment of its prospects

Scientific adviser: professor Victor Alekhin

Resume Abstract

Abstract

Сontent

• 1.General description of work
• 1.1. Background studies
• 1.2. Communication with the scientific programs, plans, themes
• 1.3. The purpose of the work
• 1.4. Objectives of research
• 1.5. The object of study
• 1.6. Subject of research
• 1.7. Research Methods
• 1.8. The scientific novelty
• 1.9. The practical significance
• 1.10. Personal contribution of the author
• 1.11. Testing results
• 2. Review of research on this subject
• 3. Geological characteristics of study area and Osipenko field
• 4. Short results
• Conclusions
• References

1.General description of work

1.1. Background studies

Fluxes are the most important type of natural non-metallic raw material used for the smelting of ferrous metallurgy of iron. Currently, the production of steel to speed up slag formation and desulfurization of the metal as a thinning supplements are widely used bauxite and fluorspar. Here is a short supply fluorspar raw material, partly imported from abroad. Studies performed Makeevskij steel plant, it was found that an alternative source of bauxite and fluorspar is staurolite [6].

There is a need to study the features of the spatial distribution of staurolite in the producing horizons Osipenko area due to the fact that:

• fluorite is a short supply raw materials and imported to Ukraine from Mongolia and other countries.

• by needs of the steel industry in staurolite (approximately 300 tons per year) can be satisfied for many years due to stock OSIPENKO field. This takes into account the needs of not only steel but also the domain of production, where the introduction in the near future, the new technology of thinning additives lead to a sharp increase in the consumption of staurolite [6].

1.2. Communication with the scientific programs, plans, themes

Theme of work is associated with directions of scientific research department of natural resources and ecological geology.

1.3. The purpose of the work

The purpose of this paper is to study the characteristics of the spatial distribution of staurolite in the producing horizons Osipenko area to improve the efficiency of extraction of resources.

1.4. Objectives of research

In accordance with the intended purpose of the following tasks were identified research:

1. Investigation of the issue (the analysis of previous studies).

2. Analysis of the geological structure Osipenko prospective area.

3. The study of the mineral composition of productive strata programs included with the methods of mathematical statistics.

4. Establishment of the features of the spatial distribution of minerals in the rocks of the staurolite and factors affecting its raspredeleniekie.

5. Building a graphical model of the field reflecting the distribution of minerals in the rocks.

6. Identify the most promising areas for priority mining.

1.5. The object of study

The object of research - schists Osipenko prospective area.

1.6. Subject of research

The object of research - mineralogical and chemical composition of the productive strata of the deposit and especially its changes in space.

1.7. Research Methods

1. Analysis of the problem as a flux material staurolite.

2. Statistical methods using computer programs.

3. Methods of graphical modeling using GIS - systems.

1.8 The scientific novelty

Modeling of the distribution of staurolite in the schists for the first time. For the first time found that the maximum accumulation of staurolite is typical for central regions of the producing formation. It is planned to build 3d - field model. Study Osipenko area, will provide new data that can be used in other fields of Ukraine and the world.

1.9. The practical significance

The study of spatial features in the distribution of staurolite Osipenkovskom field will find the most rational approach to his recovery. Studies contribute to the creation of the Azov reliable raw material base of the new progressive type of nonmetallic metallurgical raw materials.

1.10. Personal contribution of the author

Performing studies of mineral deposits of the producing formation based on the methods of mathematical statistics. Establishment of the features of the spatial variability of staurolite rocks. Modeling the distribution of staurolite in the schists.

1.11. Testing results

The research results were presented of the VI International Scientific and Practical Conference ДОНБАСС-2020: ПЕРСПЕКТИВЫ РАЗВИТИЯ ГЛАЗАМИ МОЛОДЫХ УЧЕНЫХ. It is planned to publish an article.

2. Review of research on this subject

In a review of the literature and source material on staurolite raw materials in Ukraine and abroad.

The analysis showed that staurolite - as a mineral, is represented by two types of geological and industrial fields [2]:

• staurolite and staurolite schists formed during regional metamorphism (Fig. 2.1) of the epidote-amphibolite and amphibolite facies at the expense of high-clay soils. Staurolite is developed in association with quartz, feldspar, almandine, muscovite, biotite, kyanite, sillimanite, andalusite, chlorite, magnetite, graphite and other minerals characteristic of the species composition and degree of metamorphism;

• alluvial deposits. Staurolite is very resistant to chemical weathering, so that in sedimentary rocks, it is clastogenic normal component of the heavy fraction. With a favorable lithological-facies conditions in the coastal marine environment, he, along with other minerals forming stable industrial placers, which are usually associated with magnetite, titanomagnetite, ilmenite, rutile, zircon, sillimanite, etc.

Mineral resources of the world. Accurate and detailed information about the industrial field, resource extraction and economic resources in the world staurolite virtually none. There is a summary of its production in the United States, Australia, Brazil, Sri Lanka, etc. In particular, the U.S. produces staurolite concentrate, taking away his passing in the development of complex placers. According to DS Gursky summary of work on the aspect of staurolite in the world is unknown [2].

But certainly we know that in Russia, staurolite is distributed in the metamorphic rocks of the Kola Peninsula. At the famous Cave deposit it occurs in mica, quartz-mica and muscovite-kyanite-staurolite schists. Occurs in the southern Urals mountains in the shales Taganay [11].

All of these deposits in Russia are the same genetic type as Osipenkovskoe (shales formed during regional metamorphism of the epidote-amphibolite and amphibolite facies).

Mineral resources of Ukraine. Large deposits of indigenous staurolite schists, representing the commercial interest, discovered in the Azov megablock SHIELD (in thicker shale mezoarheyskoy Osipenko series Sorokinskoy tectonic zone, the area Gulyaypolskoy syncline). Staurolite schists Priazovsky megablock may be a reserve for the expansion of resource base of staurolite.

Staurolite occurs in the intensely metamorphosed schists of Northern and Southern Krivoi Rog. Number of staurolite varies widely and areas reaches 45%. They are especially characteristic of the mica schist beams Razdory (Annovskiy site) [2].

First sequence staurolite rocks, in which localized deposits of staurolite Osipenko described in the article Zhukov G.V. etc Терригенная формация Приазовского кристаллического массива [4]. Later studies were conducted near the geologists until the present time. Usenko I.S., Zakrutkin V.V. and others in the course of these studies examined the petrographic composition of the rocks, characteristics and conditions of metamorphism of schists Azov [5,13,14,15]. In detail features of the stratigraphy of the study area in the works Scherbak N.P. Стратиграфические разрезы Украинского щита [17] and V.V. Zakrutkin Метаморфические комплексы восточной окраины и склона Украинского щита [5]. Data on the mineralogical, chemical composition of rocks Osipenko prospective area and brief information about the features of the structure of the deposit are presented in the work of Gursky D.S., Esipchuka K.Y., Krivonos V.P., Panov B.S., Polunovskogo R.M., Lazarenko E.K. and others [2,6,7,8]. The structural-tectonic and tectonic features of the internal structure of Sorokin's tectonic zone are described in papers V.I. Alekhin [1] and Dudnik V.A. [3]. Data on physical properties and conditions of formation and paragenesis staurolite is well covered in the monograph Fedkina V.V. [16].

The first information about the possibility of staurolite concentrate in metallurgy as a flux (thinning agents) to accelerate the processes of desulphurization slag formation and the metal are found in the works Krivonosa V.P. and Panov B.S. [6,10,11].The authors have substantiated the fact that the com pared with bauxite and fluorspar spa that staurolite concentrate em With a number of advantages. As studies have shown the superiority of staurolite concentrate over other types of fluxes: improving the quality of the metal and decrease its cost. Well-studied problems of stratigraphy, chemical and mineralogical composition, physical properties, the conditions of formation and paragenesis of staurolite. Were not fully investigated geological factors affecting the spatial variability of the quality parameters of staurolite rocks.

3. Geological characteristics of study area and Osipenko field

Large deposits of staurolite schists, representing the industry considerable interest, located on the Azov area megablock Ukrainian crystalline shield (SHIELD). Here they are widely distributed in the shales thicker tsevoy Osipenko a suite of lower Proterozoic, the terms in ern Sea of Azov for large grabenovuyu structure - Sorokin tech tonic zone and the site Gulyaypolskoy syncline. The greatest prospecting vy interest Sorokin zone in the central part of which thick layers of staurolite schists exposed on the surface or lie on the minor depths from 3-5 to 30-40 m wide zone This extends from 1.5-3.5 km from the . Urzuf on the coast of the Azov Sea in the north-westerly direction for 35 km to the s. Andreyevka Berdyansk district. Structurally, Sorokin grabenovaya structure located on the border of two large blocks. South-Western bloc composed of Archean rocks zapadnopriazovskoy series, and the north-east - tsentralnopriazovskoy series of the Lower Proterozoic.

The incision Osipenko Formation within the zone represented by Sorokin biotite, two-mica, amphibole, garnet, graphite, garnet, amphibole, garnet, staurolite, biotite, staurolite, sillimanite-garnet, staurolite-andalusite-mica schists and other, marbles and calciphyres, monomineral, micaceous and amphibole-magnetite quartzites, and metagravelitami metakonglomeratami. Unlike glubokometamorfizovannyh formations West and tsentralnopriazovskoy series (granulite and amphibolite facies) rocks metamorphosed suite osipenkovsky weaker (epidote-amphibolite facies) and did not migmatized. In sections Formation shale formation natural, often rhythmically interbedded. Usually they form lenticular beds ranging from 2 - 10 50 - 600 m along strike to the aged 1.2 - 2.5 and at least 3 - 5 km. Staurolite and garnet-staurolite-mica schist, usually confined to the lower and middle parts of the section Osipenko suite Sorokin zone. Visually they are a breed of gray or dark gray, medium-go fine-grained, schistose well. Against the background of gray quartz-feldspar-mica mass is usually clearly distinguished staurolite porphyroblasts in the form of rhombic prisms in length from 0.1 to 4 cm, and aggregates of crystals [6].

4. Short results

To calculate the statistical indicators in the thickness distribution of staurolite schists OSIPENKO field of data processing used the package SPSS. As a result of the calculation of key indicators for the sample obtained by the following characteristics of the distribution of staurolite Osipenko sequences (Table 4.1).

Table 4.1. Statistical characteristics of the content of staurolite in rocks Osipenko thickness,%

The table shows that the maximum content of staurolite (24%) are typical for the garnet-staurolite-biotite, garnet-staurolite and staurolite-biotite-muscovite schist. On average content of the most promising shale staurolite-garnet-biotite and garnet-staurolite, staurolite, where the content of 9.18% and 11.2% respectively. The most uniform distribution of staurolite is observed in the garnet-staurolite and staurolite-biotite-muscovite schists, as indicated by the value of the variation does not exceed 50%.

In order to establish the main features and geological factors of the spatial variability of the staurolite and identify the most promising areas for the primary mining, special sections have been constructed. In this case, use of GIS - the system of Surfer. With this program, data were obtained on the distribution of staurolite in the plane of the section shown in the concentration isolines. This method allowed us to identify the main trends of its distribution in the rocks. An example of one of the sections shown in Figure 4.1.