P. 4-13
PROFESSOR MYKOLA PORFYROVYCH YERMAKOV–
THE THEORIST AND FOUNDER OF THE NEW BRANCH OF GEOLOGICAL KNOWLEDGE–
THERMOBAROGEOCHEMISTRY (FOR THE CENTENARY)

Yu. Lyahov, O. Matkovskyi, M. Pavlun, A. Sivoronov

Ivan Franko National University of Lviv,
4, Hrushevskyi St., 79005 Lviv, Ukraine
E-mail: zaggeol@franko.lviv.ua

The activity of professor M. P. Yermakov as the founder of new scientific direction – thermobarogeochemistry – is described. Scientific logic and methodology of realization of fluid inclusions in minerals thermobarogeochemical researches are characterized.
Key words: M. P. Yermakov, thermobarogeochemistry, fluid inclusions, geochemical systems of inclusions in minerals, endogenous mineral forming, applied thermobarogeochemistry.

P. 14-32
THERMOBAROGEOCHEMICAL CONDITIONS OF HALOGEN DEPOSITS FORMATION
(LOWER PERMIAN SOLIKAMSK BASIN)

D. Sydor

Institute of Geology and Geochemistry of Combustible Minerals of NASU,
3а, Naukova St., 79060 Lviv, Ukraine
E-mail: igggk@mail.lviv.ua

Based on thermobarogeochemical analysis the specific data about the physical-chemical conditions of formation of Lower Permian Solikamsk basin in Pre-Urals foredeep (Verhnyokamske deposit of K-Mg salts) were obtained. We found that halogen sedimentation have been occurred of the dominant role of marine waters. These waters were close to the modern oceanic water saturated to corresponding stage and differed by slightly decreased content of sulphate-ion (up to 5 g/l). In course of salt accumulation the gradual concentration of brines led to complete loss of sulphate-ion, increasing of K⁺ to 33 g/l, Mg²⁺ to 103 g/l contents in solutions finished by deposi-tion of thick potash salts of chloride composition. Post-sedimentary alteration of deposits took place under increased temperature (30–92 °C, average – 53 °C) and pressure up to 20 MPa under the impact of buried metamorphozed solutions saturated by nitrogen, methane, hydrogen and carbon dioxide. Zones of tectonic dislocations, “impoverishment”, “geophysical anomalies” differ by more significant recrystallization of salts due to increased values of temperature and pressure. The occurrence of inclusions with hydrocarbon phase can be used as a criterion for diagnostic of such zones.
Key words: salt-bearing deposits, halite, sylvine, carnallite, inclusion, thermobarogeochemistry, Permian, Verhnyokamske deposit of K-Mg salts, Pre-Urals foredeep.

P. 33-40
POST-SEDIMENTATION RECRYSTALLIZATION AND NEOCRYSTALLIZATION
IN POTASSIUM SALTS DEPOSITS OF THE PRE-CARPATHIANS REGION

P. Bilonizhka

Ivan Franko National University of Lviv,
4, Hrushevskyi St., 79005 Lviv, Ukraine
E-mail: mineral@franko.lviv.ua

The processes of recrystallization and neocrystallization in the Pre-Carpathians potassium salts deposits on the stages of diagenesis and katagenesis under influencing of increasing temperature and pressure and saline solutions are described, as well as the results of inclusions in salt minerals investigations. The conditions of post-sedimentation forming of astrakhanite, kainite, chambersite crystals and boronatrocalcite and lüneburgite aggregates in the salt rocks are described. The conclusion is done, that the primary look of potassium salts has been changed substantially because of post-sedimentation processes.
Key words: potassium salts, post-sedimentation recrystallization, diagenesis, katagenesis, saline solutions, neocrystallization, Pre-Carpathians region.

P. 41-50
ABOUT THE ROLE OF HYDROGEN IN MINERAL-FORMING PROCESSES

V. Guliy, I. Poberezhska

Ivan Franko National University of Lviv,
4, Hrushevskyi St., 79005 Lviv, Ukraine
E-mail: vgul@ukr.net

Pyroxene and apatite have been studied by high temperature chromatography analysis and gas analysis of individual inclusions. It has been obtained information on chemical composition of inclusions for the minerals from basic-ultrabasic complexes, carbonatites, magnesium Precambrian calc-silicate rocks and metamorphic rocks. Hydrogen is constant component of the inclusions and their amounts are most high in more early generations of the minerals. There is similarity between composition of the inclusions in diamond-bearing and basic-ultrabasic rocks.
Key words: hydrogen, inclusion, natural gases, degassing of the Earth, depth flows of hydrocarbons, hydrothermal systems.

P. 51-63
PHYSICAL-CHEMICAL CONDITIONS AND STAGES OF ORE MANIFESTATION
“BILYI POTIK” FORMING (RAKHIV ORE REGION)

S. Tsikhon, І. Konchakivskyi

Іvan Franko National University of Lviv,
4, Hrushevskyi St., 79005 Lviv, Ukraine
Е-mail: tsіkhon_s@ukr.net

Physical-chemical and mineralogical-physical properties of minerals, different age mineral associations and complexes of ore manifestation “Bilyi Potik” (Rakhiv ore region, Transcarpathians) have been investigated. The sequence of their crystallization during three stages of mineral-forming process has been found out. From data of fluid inclusions homogenization, the temperature interval of actually productive mineral forming was 295–130 °C, at the same time overwhelming mass of gold has been formed at T = 220–170 °C and P = 60–30 MPa; density of CO₂ from productive CO₂-H₂O fluids – 0,579–0,585 g/m3. It is proved that gold has been crystallized from productive portion of fluids during the gold-polysulphide stage of mineral forming together with the minerals of gold-polysulphide mineral complex.
Key words: quartz, gold, pyrite, thermoelectric power force, fluid inclusions, thermobarogeochemistry, mineral forming process, metamorphic rocks, Rakhiv ore region.

P. 64-75
TELLURIUM-BISMUTH AND BISMUTH-MOLYBDENUM MINERALIZATION
IN VOLCANOGENIC ROCKS OF VYHORLAT-HUTYNSKE RIDGE (TRANSCARPATHIANS)

O. Matkovskyi

Ivan Franko National University of Lviv,
4, Hrushevskyi St., 79005 Lviv, Ukraine
E-mail: mineral@franko.lviv.ua

The distribution, features of localization, mineral composition and new information about genesis of tellurium-bismuth and bismuth-molybdenum mineralization have been analysed on the base of published data. The spatial connection with extrusive-intrusive formations of poligenic volcanoes is characteristic for it, as well as the paragenesis with B- and F-containing metasomatites of different facies. The newest researches show, that bismuth tellurides are presented not by wehrlite, which is not a mineral, but, mainly, by tsumoite and the other minerals (joseite, pilsenite, nevskite, phases of Bi₃Te₂, Bi₂Te etc.), and molybdenite belongs to the rare variety of polytype 3R.
Key words: tellurium-bismuth and bismuth-molybdenum mineralization, metasomatites, wehrlite, molybdenite, bismuthine, tsumoite, pilsenite, joseite, Vyhorlat-Hutynske volcanic ridge, Transcarpathians.

P. 76-82
TYPOMORPHIC FEATURES OF NATIVE GOLD IN HYPERGENE ALTERATION ZONE
OF FERRUGINOUS-SILICEOUS ROCKS OF THE KRYVYI RIH STRUCTURE
(NORTHERN-TARAPACK ORE OCCURRENCE)

V. Sukach¹, I. Paranko², M. Kovalchuk³, O. Yagovdik⁴, N. Gayeva⁴

¹Institute of Geochemistry, Mineralogy and Ore Formation of NASU,
34, Acad. Palladin Av., 03142 Kyiv, Ukraine
E-mail: svital@ukr.net
²Kryvyі Rih State Pedagogical University,
54, Gagarin Av., 50086 Kryvyі Rih, Ukraine
E-mail: paranko@mail.ru
³Institute of Geological Sciences of NASU,
55b, Oles Honchar St., 01601 Kyiv-54, Ukraine
E-mail: kms1964@ukr.net
⁴Pensioner

Few genetic types of gold mineralization in rocks and iron ores of Kryvyi Rih basin have been established. Mineralization of Northern-Tarapack occurrence is located in ferruginous quartzites, theirs crust of weathering and rocks of its redeposition – coarse-grained sandstones. The article presents research data on typomorphic features of native gold from sandstones and crust of weathering of ferruginous quartzites. Four genetic types of gold have been distinguished on the basis of the obtained data.
Key words: gold, typomorphic peculiarities, ferruginous quartzites, linear crust of weathering, Northern-Tarapack ore occurrence, Kryvyi Rih structure.

P. 83-90
CRYSTAL MORPHOLOGY OF BERYL FROM VOLYN CHAMBER PEGMATITES

O. Vovk¹, I. Naumko²

¹Lesya Ukrainka National University of Eastern Europe,
13, Volі Av., 43025 Lutsk, Ukraine
E-mail: geologygeochemistry@gmail.com
²Institute of Geology and Geochemistry of Combustible Minerals of NASU,
3а, Naukova St., 79060 Lviv, Ukraine
E-mail: igggk@mail.lviv.ua

Crystal morphology of beryl from Volyn chamber pegmatites has been investigated. The influence of crystal structure and mineral forming conditions on crystal habit has been researched. The results of calculations of reticular density according to Donney–Harker law are reduced, pre-vious PBC-vectors in crystal structure are presented, F, S, K-faces according to Hartman–Perdok method are admitted, morphological importance of faces according to face symmetry by I. Shafranovskyi are presented. Different structural methods specify the morphological importance of faces {0001}, {101̅0}, {112̅0}, {101̅1}.
Key words: beryl, crystal morphology, crystalline structure, reticular density, crystal face, genesis, pegmatites, Volyn.

P. 91-97
THERMOBAROMETRY AND GEOCHEMISTRY OF VEINLET-IMPREGNATED MINERALIZATION GASES
IN DEPOSITS OF OIL- AND GAS BEARING REGIONS AND METALLOGENIC PROVINCES:
DEFECTS IN MINERALS – THE SOURCE OF INFORMATION ABOUT THE MINERAL FORMING PROCESSES

Yo. Svoren'

Institute of Geology and Geochemistry of Combustible Minerals of NASU,
3а, Naukova St., 79060 Lviv, Ukraine
E-mail: igggk@mail.lviv.ua

The nucleation and growth of crystals on the CO₂ bubbles with their isolation almost in unshaped form have been theoretically and experimentally determined. The results can be used for modelling processes of mineral and ore formation in the case of additional enrichment of fluid by gas components, including CO₂, and for elucidation of solution state in near-crystallization zone – on the crystal–solution border. These results testify to the forming of gas inclusions in minerals during their synthesis in hydrothermal conditions. Probably cellular quartz is formed under such circumstances.
Key words: defects in solid bodies, mineral, volatiles, crystallization, selective sorption of isotopes, thermobaric geochemistry.

P. 98-105
MINERAL-FORMING PROCESSES
IN THE CRUSTS OF WEATHERING OF THE UKRAINIAN CARPATHIANS

O. Matkovskyi, Ye. Slyvko

Ivan Franko National University of Lviv,
4, Hrushevskyi St., 79005 Lviv, Ukraine
E-mail: emslivko@i.ua

The mineral-forming processes in the crusts of weathering of different rocks in the Ukrainian Carpathians have been analysed on the base of published data. The crusts of weathering developing on the Pliocene rocks of Vyhorlat-Hutynske volcanic ridge andesite formation are described more detailed, and also various iron ores in the crusts of weathering on the territory of Transcarpathians region.
Key words: mineral-forming processes, hypergenesis, crust of weathering, iron ores, Ukrainian Carpathians.

P. 106-113
ELECTRON MICROSCOPIC STUDY OF GLAUCONITE
FROM CRIMEAN PALAEOGENE ROCKS

P. Bilonizhka, Yu. Datsyuk

Ivan Franko National University of Lviv,
4, Hrushevskyi St., 79005 Lviv, Ukraine
E-mail: mineral@franko.lviv.ua

Distribution of glauconite in Crimean Palaeogene sedimentary rocks, mineral composition of its granular aggregates, peculiarities of its structure, microstructure and genesis are presented. It has been revealed (based on diffractometry analysis) that the structure of glauconite is layer-mixed one, thus it is characterized by various degree of order depending on its formation conditions. The study of glauconite granules microstructure by means of scanning electron microscope shows that high sorption capacity of glauconite, which was described by many researchers, is caused not only by the structure of its mica and montmorillonite interlayer spacing, as previously assumed, but the peculiarities of its microstructure as well. Glauconite has been formed from the volcanic products.
Key words: glauconite, mixed-layer phase, microstructure, sorption capacity, Palaeogene, Crimea.

P. 114-119
THE CONTRIBUTION OF PROFESSOR V. A. KALYUZHNYI
TO THE DEVELOPMENT OF THE DOCTRINE ABOUT MINERAL-FORMING FLUIDS
(TO THE 90th ANNIVERSARY OF THE BIRTHDAY)

P. 120-126
TO THE 80th ANNIVERSARY OF IPOLYT VASYLYOVYCH NOSYRYEV
(FLASHBACKS ABOUT THE TEACHER AND FRIEND)
V. Kadurin, O. Chepizhko

Одеський національний університет імені І. І. Мечникова,
вул. Дворянська, 2, 65082 м. Одеса, Україна
Е-mail: avchep@i.ua

P. 127-131
CELEBRATION OF 140th ANNIVERSARY OF TARAS SHEVCHENKO SCIENTIFIC SOCIETY
O. Matkovskyi, P. Bilonizhka

Львівський національний університет імені Івана Франка,
вул. Грушевського, 4, 79005 м. Львів, Україна
E-mail: mineral@franko.lviv.ua

P. 132-135
IN MEMORY OF YURIY MYHAYLOVYCH MEL'NYK