Ukrainian Carpathians mineralogy new data
O. Matkovskyi1,
L. Skakun1, V. Shklianka2
1Ivan Franko National University of Lviv, Hrushevskogo st. 4, UA – 79005 Lviv, Ukraine
2Zakarpats’ka geological-prospecting expedition,
Beregove
More
than 340 minerals have been determined in the Ukrainian Carpathians. It is
almost half of its quantity known in the Ukrainian territory as well as in the
Carpathians region. Mineral content percentage is like to average ones in the
Earth crust. For the Ukrainian Carpathians part increased quantities of the
silicates, sulphides, natural substances and carbonates are characteristic.
Sulphides together with natural substances determine metallogenic
specialisation of the region while sulphates and carbonates – nonmetalliferous
one. During last ten years more than 100 minerals has been revealed and 50
among them are quite rare and the only finds in Ukraine, five of them has been
discovered in the Ukrainian Carpathians for the first time.
Key words: mineral,
Ukrainian Carpathians, the first discovery.
Fluid regime of the petro-ore-genesis processes and
thermobarogeochemical criteria of the evaluation of gold-containing fields at
the Mayske deposit (Savranske ore field, Boug Region)
O. Bobrov, Yu.
Lyakhov, M. Pavlun’, A. Sivoronov
Ivan
Franko National University of Lviv, Hrushevskogo
st. 4, UA – 79005 Lviv, Ukraine
Evolution
of thermobarogeochemical parameters of the pre-ore stages of metamorphism,
granitization, palingenesis and ore-preparing metasomatism is described in the
article. It also contains the scheme of staging and thermobarogeochemical
regime of deposit formation; it considers application aspects of the results of
fluid inclusions thermobarogeochemical studies.
Key words: metamorphism,
palingenesis, thermobarogeochemical parameters, gold-forming process, CO2
regime, gold-bearing criteria, Mayske gold deposit.
Quantitative
termobarogeochemical modelling of gold-bearing fields in the local forecast
practice
Yu. Lyakhov, M.
Pavlun’, I. Popivnyak, S. Tsikhon’
Ivan
Franko National University of Lviv, Hrushevskogo
st. 4, UA – 79005 Lviv, Ukraine
Thermobarogeochemical
studies studies, detailed mapping and modelling of the gold-bearing objects (deposits,
zones etc.) are the important elements of the forecast-searching complex.
Paleohydrosystem thermostatic control degree expressed in the quantitative
estimations of vertical paleothermal gradients is the value of mineralization
perspectives, its vertical scale and display forms. On the whole with
thermostatic control processes lowering (Δt from 5–10 to 30–40ºÑ per 100 m)
the vertical mineralization scale shortens regularly while its concentration
increases. The last fact is important during determination of searching
priority of the potentially gold-bearing regions.
Key words: thermobarogeochemistry,
thermostatic control, paleothermal gradient, gold mineralization.
Peculiarities
of structure and composition of the rocks from
tectono-fluidizate zones in the middle-boug region
O. Babynin1, O. Bratchouk2, D. Gurskyi3, Yu. Marchenko2, M. Parshyna4,
A. Rosykhina5, Ye. Slyvko5, G. Yatsenko5
1State Joint-stock
Company “Ukrainian Polymetals”, Kyiv
2State Geological Enterprise “Centrukrgeologia”, Tcherkasy
3Ministry of
Ecology and Natural Resources of the Ukraine, Kyiv
4Ukrainian State
Geological Research Institute, Kyiv
5Ivan Franko
National University of Lviv, Hrushevskogo st. 4, UA – 79005 Lviv
The Klyntsi ore
field contains Klyntsi gold-bearing deposit and two occurrences. On geological
parameters and character of mineralization they concern to a new
geological-industrial type, to which the Mayske gold deposit is close also. However each object differs by mineralogical
features (mineral associations, composition, minerals mutual relation etc.).
The comparison became possible after study of Goubivka gold-occurrence, the
materials on which have been resulted for the first time.
Key words: gold, sulphides, ore body, gold-bearing deposits, Precambrian, Ukrainian
Shield.
Methodology
and employment of decrepitation analysis of the highly metamorphosed
diaphthorized rocks (on the example of Maiske gold deposit, Ukrainian shield)
O.
Lytvynovytch, Yu. Pakhniushchyi
Ivan Franko National University of Lviv, Hrushevskogo
st. 4, UA – 79005 Lviv
The new way of deciphering polymineral
non-electromagnetic fractions decrepitation curves has been proposed. This
express technique may be applied to mapping halo interaction of endogenous
fluids with rocks for purposes discovering the “blind” potential ore-bearing
zones. Its special effectiveness becomes apparent in search of ore-bodies in
highly metamorphosed diaphthorized rocks, which are devoid of evident visible
indications of ore guides.
Key words: gold, polymineral
non-electromagnetic fraction, decrepitation, steaming aureole, ore-bearing zone,
Ukrainian Shield.
Fluid regimes of magmatic mineral forming (by results of inclusions
study)
I. Bakumenko
Ivan Franko National University
of Lviv, Hrushevskogo st. 4, UA – 79005 Lviv, Ukraine
The results of
melt and syngenetic fluid inclusions (which isolate on the magmatic stage of
crystallisation) researches are considered. The research of inclusions in minerals
of granitoids, granite pegmatites and in rhythmical-zone quartz-feldspar
aggregates from granites and granite pegmatites has enabled to reconstruct
appropriate fluid regimes. The features of fluids functioning in basaltoid
magmas of andesite and alkaline-earth formations and in products of their
differentiation are considered. Data about cavity formation on a final stage of
basic and persilic lava’s crystallisation, which results in formation of
agates, is resulted.
Key words: fluid inclusions, fluid regime,
magmatic stage of crystallisation, persilic magma, basic magma, agate.
minerals-carriers of gold in the Ukrainian ores
M.
Koval’tchouck
Institute of Geological Sciences of NASU, Olesya
Honchara st. 55b, UA – 01601 Kyiv, Ukraine
The temporal,
spatial and lithofacial gold distribution and its principal genetic types in
sedimentary complexes of the Ukraine have been ascertained. The morphogenetic
classification of visible gold from sedimentary complexes is adduced. Six
morphologic varieties of native gold (idiomorphic, hypidiomorphic, individuals
with signs of skeletal growth and dendritoids, xenomorphic, heamiidiomorphic,
“new” gold) are settled and main forms of their segregations are considered.
Key words: gold, morphology, classification, sedimentary complex, Ukraine.
TYPOMORPHIC
PECULIARITIES OF THE GARNETS FROM METAMORPHIC ROCKS WITHIN RAKHIV ORE FIELD
O. Chepizhko,
V. Kadurin
I.
Metchnikov National University of Odesa, Shampanskyi St. 2, UA – 65058 Odesa,
Ukraine
E-mail: kadurin@paco.net
Accessory
minerals study helps to improve reliability of rock sequence correlation,
evidence of magmatic rocks genesis and initial content of metamorphic and
ultrametamorphic ones, evaluation of rock radiometric age and their ore-bearing
potential. The problem, which can be solved due to anakysis of mineralogical
information (study of accessory minerals) is a similarity of geological
processes and phenomena. The mathematical methods are the bull tool of
mineralogical studies supplying simulation of processes both issues of the
forecasts and hypotheses. The tendered method of mineralogical information
interpretation is directed to create a database and to form the geological
object petrogenetic models as well as their ore potential.
Key words:
accessory minerals, petrogenesis, database, model, computer know-how.
Polyhalite from the Carpathian Foredeep: the
radiometric age and origin
A.
Wójtowicz1, S. Hryniv2
1Polish Geological Institute, Pakovetska st. 4, PL – 00-075 Warsaw,
Poland;
2Institute of Geology and Geochemistry of Combustible Minerals of NASU,
Naukova st. 3a, UA – 79053 Lviv, Ukraine
Miocene
K-Mg sulphate deposits of the Carpathian foredeep occur on two stratigraphic horizons.
Lower of them belongs to Eggenburgian stage, the age of upper one is debatable
– either Ottnangian or Badenian. We have determined the radiometric age of 15
specimens of two genetic varieties of polyhalite by K/Ar method. Polyhalite
from red bedded polyhalite rock occurring at the places of wedging out of
potash salt deposits and polyhalite from polyhalite-anhydrite strata which are
situated at the salt breccia near the contact of potash salt deposits have been
investigated. Radiometric age data pf polyhalite from red polyhalite rock vary
from 8.3 to 14.7 Ma. Radiometric age determined for polyhalite from
polyhalite-anhydrite layers turned out to be younger, from 5.7 to 12.3 Ma.
Comparison of ages of the same varisties of polyhalite
from Stebnyck (Eggenburgian) and Kalush-Holyn (Ottnangian?, Badenian?) deposits
does not show significant differences. The origin of polyhalite is connected
with tectonic events during the history of the Carpathian foredeep geological
development. The large dispersion of polyhalite dates obtained for
polyhalite-anhydrite strata may suggest that they have been formed during
several stages.
Key words: polyhalite,
evaporite, argon-40, dating, Miocene, Carpathian foredeep.
Clay minerals in the deposits of Dnister series
in Lviv depression
G.
Kompanets’1, V. Manitchev2, I. Dz³uba
1Institute of Geological Sciences of NASU, Olesya Honchara
st. 55b, UA – 01601 Kyiv, Ukraine
SSC of Environmental Radiogeochemistry, Acad. Palladin
av., 34, UA – 01680 Kyiv
The paper gives the results of X-ray
spectriscopy, electronic microscopy and chemical analysis of the finest
fractions (< 0.001 mm) of the rocks of Dnister series as well as the results
of their dispersity degree study. The chlorite-hydromicas nature of clay
material is revealed. The allothigenic origin of clay minerals is defined. It
is shown that the degree of hydromicas crystallicity depends on the
sedimentation conditions. The regularities of microelement distribution in the
clay matrix have been studied.
Key
words: clay mineral, chlorite, hydromica,
Dnister series, Devonian, Lviv Depression.
COMPOSITION
OF A MINERAL PART OF COAL CONTAINING ROCKS AS AN INDICATOR OF COAL UNDERGROUND
GASIFICATION CONDITIONS
Yu. Stefanyk1, D. Bryk1, V. Khramov2
1Institute of
Geology and Geochemistry of Combustible Minerals of NASU, Naukova st. 3a, UA –
79053 Lviv, Ukraine
NJ-SC “NAFTOGAZ of Ukraine”
The
influence of coal containing combinations on the process of underground
gasification of coal (UGC) is considered. The melting point of the coal mineral
part is the important criterion of concrete coal seams fitness for conducting
UGC.
Key words: coal, mineral components, coal
ash, melting point, underground gasification of coal.
Some
problems of the basalt volcanic series systematisation
K.
Sveshnikov, V. Pashchenko
Ivan Franko National University of Lviv, Hrushevskogo st. 4, UA – 79005 Lviv, Ukraine
E-mail: zaggeol@franko.lviv.ua
The searching of the differences between differentiation–crystallisation
paths of magmatic melts corresponding to different magmatic series and their
systematisation on this basis remain one of the most important problems in the
magmatic geology. The using of the (FeO+Fe2O3)–MgO–CaO diagrams
with dots of major rock-forming mineral composition on them shows some quality
distinctions between different type series, which can not be established by the
other methods. The quality diagram, showing the correlation between geodynamics
and petrochemical features (mean content of SiO2 and Al2O3/CaO
ratio) of the basaltoid series, has been proposed.
Key words: volcanic series,
petrochemical features, geodynamic position, differentiation trend.
Peculiarities
of the crust of weathering over kimberlites from Pryazovskyi geoblock
(Ukrainian Shield)
S. Bekesha, V.
Stepanov, Yu. Fedoryshyn
Ivan
Franko National University of Lviv, Hrushevskogo st. 4, UA – 79005 Lviv,
Ukraine
Some results of the X-ray, thermal and chemical investigations of the
crust of weathering of three kimberlitic pipes from the Pryazovs’kyi geoblock
(Ukrainian Shield) have been presented. Peculiarities of the4 clayey and heavy
fractions from the upper parts of the pipes have been determined.
Key words: crust of weathering, clay minerals, kimberlite
pipe, diffractogram, thermogram.
Platinum
minerals in the chromite ores of the Boug Region
S. Popovtchenko, S. Gornostayev
Center of
analytical-technological researches of National Mining Academy of Ukraine
Karl Marx av., 19, UA – 49027
Dnipropetrovs’k, Ukraine
Platinum and nickel minerals from the Lypoven’ka and Kapitanivka
deposits have been studied by the methods of optical and electronic microscopy.
Minerals diagnostic has been carried out with the help of microanalysis, and
mineral chemical formulas have been counted. The conclusion about possible
geochemical specialization of the investigated ultrabazites in rare platinum
minerals (Ru, Ir, Os, Rh) is made.
Key words: mineral, platinum, electronic microscopy, chromite ore, Boug
region.
Zeolites
in sedimentary and sedimentary-volcanogenic rocks of Ukraine
S. Shumenko
V.N. Karazin National University of Kharkiv, Svobody
sq. 4, UA – 61006 Kharkiv, Ukraine
In the article the results of study of zeolites from sedimentary and
volcanogenic-sedimantary rocks of Ukraine are described. In
volcanogenic-sedimentary rocks the formation of zeolites (clinoptilolite,
mordenite) has been connected with pyroclastic material. Three morphological
modifications of such zeolites have been allocated. Zeolites in sedimantary
rocks are submitted extremely by clinoptilolite-like variety. The
recommendations for use of zeolites in the national economy of Ukraine have
been developed.
Key words: zeolites, clinoptilolite, mordenite, pyroclastic material,
sedimentary rocks, Ukraine.
Nature of inter-layered water in the hydromicas
P.
Bilonizhka
Ivan
Franko National University of Lviv, Hrushevskogo st. 4, UA – 79005 Lviv,
Ukraine
Å-mail: geomin@geof.franko.lviv.ua
Nature of the inter-layered
water in hydromicas on the basis of laboratory investigations and literature
data analysis has been considered. Inter-layered water in hydromica from sedimentary
rocks with faint post-sedimentation alteration is mainly connected with swelled
montmorillonite layers in its structure. On the DTA curves one can see
endothermal effect of the water exudation under 200ºC. Characteristic
peculiarity of these hydromicas is asymmetric structure of d001 = 10 Å reflection
raised and complicated from small angles side. Molecular water in the micas is
in the hexagonal cells non-occupied with potassium ions. Under hydromicas
heating the water exudates about 300ºC.
Oxonium presence in the hydromicas needs supplementary discussion.
Key
words: hydromicas,
montmorillonite, inter-layered water, oxonium, thermal analysis,
X-ray examination.
The problems of biomineralogy on the boundary XX–XXI centuries (on the
example of a man)
F.V.Zuzuk
Lesya Ukrainka
Volynian State University, Voli av., 13, 45021 Lutsk, Ukraine
E-mail:
sunflower@fk.lutsk.ua
Geology in
the 21st century will apparently be defined by an active development
of biomineralogy.Its development is studied on the example of man’s
biomineralogy. Ways of development of this branch of science are physiological
biomineralogy and pathological biomineralogy. The most important problems of
studying the “man’s mineralogy” are following: the spreading of the disease
depending on the outer factors, mineralogy of the pathological formations and
microelements of the pathological formations. A short analysis of
biomineralogical problems on the example of a man shows that this branch of
science will develop rapidly in the 21st century. The reason of it
is the necessity in people’s being healthy, in curing and preventive
maintenance the diseases, and in the development and usage of new biomaterials
and biotechnologies.
Key words: biomineralogy, people,
pathogenic mineral-forming, organic matter, microelements.
About the International Scientific Conference
“Scientific bases of forecasting, searches and estimation of gold deposits”
O.
Matkovs’kyi,
Ye. Slyvko
Ivan Franko National University of Lviv, Hrushevskogo st. 4, UA – 79005 Lviv,
Ukraine
Å-mail: geomin@geof.franko.lviv.ua
The
information on the International Scientific Conference “Scientific bases of forecasting,
searches and estimation of gold deposits”, which was held at Ivan Franko
National University of Lviv on September 27–30, 1999, is stated. At the
conference such questions have been discussed: geology and metallogeny of
auriferous deposits; geochemistry and mineralogy of gold; gold-generating fluid
systems; technological properties of ores; use of various methods
(structural-formational, geophysical, mineralogical, thermobarogeochemical
etc.) forecasting, searches and estimation of gold mineralization.
Key words: gold, scientific
conference.