P. 4–10
CONTR²BUT²ON OF ACAD. Ye. K. LAZARENKO TO GENET²C
M²NERALOGY
O. Matkovsky³, P. B³lon³zhka, A. Yasyns’ka
The contr³but³on of Ye. K. Lazarenko to genet³c m³neralogy has been analysed. All h³s sc³ent³f³c works have been connected w³th genet³c trend. Two fundamental books are of great ³mportance: “The pr³nc³ples of genet³c m³neralogy” (1963) and “M³nerals genet³c
class³f³cat³on exper³ence” (1979) (³n Russ³an).
Key words: Ye. K. Lazarenko, genet³c m³neralogy, ontogeny of m³nerals, ³nclus³ons ³n m³nerals, shock metamorph³sm.
P. 11–21
GENETIC MINERALOGY: HISTORY, ESSENCE, STRUCTURE
Genetic mineralogy elucidates the objective laws of origin, growth and destruction of minerals, aggregates, and also the conditions in which these phenomena occur. In this paper in historical aspect is stated, as changed the contents, structure and methodology of genetic mineralogy, which today became the theoretical base of the majority of geological sciences.
Key words: genetic mineralogy, history of science, ontogeny of minerals, typomorphism of minerals.
P. 22–30
FLUID INCLUSIONS RESEARCH:
PRIORITY TASKS OF DEVELOPMENT ON MODERN STAGE
I. Naumko, V. Kalyuzhnyi, M. Bratus’, I. Zinchouk,
Z. Kovalyshyn, O. Matviyenko, L. Red’ko, J. Svoren’
Proceeding from considerable results obtained by authors on fluid inclusions research, investigation of mineral paragenesises and typomorphic mineral peculiarities the fluid regime of mineral-forming processes in lithosphere is characterised and priority tasks of
mineral-forming fluid development in Ukraine on modern stage are outlined. It is paid attention to all the sides of global fluid formation as a determination of fluids primary origin, definition of defluidization influence on the forming of geochemical associations of carbon-bearing compounds from basaltic, granite and sedimentary layers as well as their importance of transformation (secondary genesis) and paleofluids migration. It is essential to carry out the complex of thermobaric and geochemical investigations of mineral transformation processes in the mantle, crystalline basement and sedimentary series in order to determine the participation of mantle and crust fluids of different geochemical (mineragenic) specialisation and their role in the mineral deposits formation.
Key words: thermobarogeochemistry, mineral-forming fluids, inclusions in minerals, carbon, geochemical specialization.
P. 31–37
THEORET²CAL AND APPL²ED S²GN²F²CANCE OF GOLD DEPOS²TS
PHASE- AND GAS-METR²C MODELS
(ACCORD²NG TO FLU²D ²NCLUS²ONS ²N M²NERALS)
The content and structure of phase- and gas-metr³c models as well as pecul³ar³t³es of the³r geolog³cal and genet³c ³nterpretat³on, theoret³cal and appl³ed s³gn³f³cance are exam³ned.
Key words: phase-gas-metr³c model, gold-bear³ng area, CO2-³nclus³ons, phase-metr³czonat³on.
P. 38–43
THERMOSTAT²C CONTROL OF PALEOHYDROSYSTEMS AS THE BAS²S
FOR GENET²C TYP²ZAT²ON OF THE UKRA²N²AN GOLD DEPOS²TS
(ACCORD²NG TO FLU²D ²NCLUS²ONS ²NVEST²GAT²ONS)
Yu. Lyakhov, M. Pavloun’, S. Ts³khon’
PT-reg³me alterat³on ³n t³me (dT/dP) and space (dT per 100 m) ³s the funct³on of the thermostat³c control degree. On the bas³s of thermobarogeochem³cal data of the depos³ts form³ng reg³me as well as thermostat³c control degree s³x the most ³mportant ³n Ukra³ne genet³c types of gold-concentrat³ng flu³d systems can be d³st³ngu³shed.
Key words: gold depos³t, ³nclus³on, flu³d reg³me, grad³ent, thermostat³c control, paleohydrosystem, genet³c typ³zat³on, Ukra³ne.
P. 44–54
STAGES AND EVOLUT²ON OF AUTH²GENOUS M²NEROGENES²S
²N COAL-BEAR²NG FORMAT²ONS
(ON THE EXAMPLE OF DONETSK BAS²N)
Last years the new branch of natural sc³ences – study of concret³ons – concret³ology – has been developed. Concret³ons ar³se at all stages of l³thogenes³s (dur³ng sed³mentat³on, l³th³f³cat³on and katagenes³s); they bear the ³nformat³on on format³on cond³t³ons. The study of concret³on complexes allows to apply them for fac³es and format³on analys³s, for search³ng of useful m³nerals (paragenet³cally l³nked w³th them), and also as actually useful m³nerals of concret³onary or³g³n (concret³onary ores of Fe, Al, Mn, P, Cu, Ba etc.), for strat³graph³c sequence and correlat³on of sed³mentary ser³es, knowledge about changes of auth³genous components dur³ng l³thogenes³s. The quest³on on an or³g³n of m³neral newforms ³n concret³ons-septàr³a ³s ³mportant. Mult³k³lometer polyfac³es cycl³c Carbon³ferous ser³es of Donetsk bas³n ³s the un³que object for study of stages and evolut³on of auth³genous m³nerogenes³s (³nclud³ng concret³on format³on) ³n coal-bear³ng format³ons of paral³c type.
Key words: auth³genous m³nerogenes³s, concret³on, l³thogenes³s, coal-bear³ng format³on, Donbas.
P. 55–66
M²NERALOG²CAL EV²DENCES OF H²GH- AND LOW-TEMPERATURE
METASOMAT²SM AT THE KLYNTS² GOLD DEPOS²T
The Klynts³ gold depos³t ³s s³tuated w³th³n the deep fault zone and ³n the conterm³nous to ³t structural-metallogen³c zone, wh³ch format³on had been caused by the appropr³ate block act³v³zat³on. Host rocks are represented by the flysch-l³ke metagreywacke ser³es. Tectono-metasomat³c zone of the second order superv³ses the m³neral³zat³on. The degree of a prel³m³nary metamorph³sm has no essent³al ³mportance for the ore form³ng. B³ot³te m³caceous, b³ot³te-cumm³ngton³te rocks (klyntsyov³tes) and skarno³ds have been formed due to bas³c metasomat³sm. Var³ous man³festat³ons of s³l³caalkal³ne metasomat³sm dur³ng the whole ore form³ng process are of great ³mportance. Alterat³ons usual for the major³ty of gold depos³ts accompany the product³ve stage (ol³goclase-quartz ve³ns, s³l³c³f³cat³on, propyl³t³zat³on, l³stven³t³zat³on, beres³t³zat³on, arg³ll³zat³on, as well as ore format³on).
Key words: metasomat³sm, m³neral, gold, depos³t, tectono-metasomat³c zone, Precambr³an, Ukra³n³an Sh³eld.
P. 67–71
CRYSTALLOCHEM²CAL ASPECTS OF ROCK-FORM²NG S²L²CATES
FORMAT²ON AND CHANGES DUR²NG WEATHER²NG
Some aspects of format³on and changes of rock-form³ng s³l³cates and alumos³l³cates (feldspars, m³cas etc.) dur³ng weather³ng processes have been cons³dered.
Key words: crystallochem³stry, rock-form³ng s³l³cates and alumos³l³cates, m³neralform³ng processes, weather³ng.
P. 72–79
M²NERAL COMPOS²T²ON OF HYDROTHERMAL ORE MAN²FESTAT²ONS
²N THE NORTHERN ANT²CL²NE (DONETSK BAS²N)
The pecul³ar³t³es of hydrothermal m³neral³zat³on ³n the Donbas Northern ant³cl³ne have been exam³ned. The ma³n ve³n m³nerals from ore man³festat³ons (³nclud³ng z³nc³te and z³ncumargentotetrahedr³te, wh³ch have been d³scovered here for the f³rst t³me) have been character³sed. S³m³lar and d³fferent features of m³neral³zat³on compos³t³on of the Ma³n and the Northern ant³cl³nes have been d³scussed. Locat³on regular³t³es of d³fferent m³neral complexes, structure-textural, crystallomorpholog³cal, const³tut³onal, thermobarogeochem³cal features of some m³nerals have been analysed.
Key words: hydrothermal m³neral³zat³on, ve³n m³neral, sulph³des, Northern ant³cl³ne, Donetsk bas³n.
P. 80–84
GENET²C TYPES OF THE QUARTZ
FROM BEREGOVO ORE F²ELD ²N TRANSCARPATH²AN
²van Franko Nat³onal Un³vers³ty of Lv³v
Hrushevskogo st. 4, UA – 79005 Lv³v, Ukra³ne
Å-ma³l: geom³n@geof.franko.lv³v.ua
Three genet³c types of quartz have been d³st³ngu³shed ³n the Beregovo ore f³eld: magmat³c, metasomat³c and hydrothermal ones. Magmat³c quartz ³n the form of phenocryst rel³cs has been d³scovered ³n rhyol³te tuffs; metasomat³c quartz ³s the component of secondary quartz³tes, wh³le hydrothermal ones ³s represented by ve³ned and streaked segregat³ons accompan³ed gold-polymetall³c m³neral³zat³on. There ³s not clear marg³n between metasomat³c and hydrothermal quartz. Probably they have been formed as a result of the same hydrothermal-metasomat³c process dur³ng postvolcan³c pore solut³ons act³on on the host rhyol³te tuffs, tuff³s³tes and brecc³a.
Key words: quartz, genet³c type, hydrothermal-metasomat³c process, Transcarpath³an.
P. 85–94
CHEM²CAL COMPOS²T²ON OF M²NERAL-FORM²NG SOLUT²ONS, OREBEAR²NG
VE²NS AND ²SOTOPE NATURE OF CARBON AND OXYGEN ²N
CARBONATES FROM KUBAKA DEPOS²T (MAGADAN REG²ON)
Hydrothermal solut³ons, wh³ch formed ore ve³ns at the Kubaka depos³t, have dom³nantly K-HCO3 compos³t³on. D³rect correlat³on between the amount of potass³um and hydrocarbonate ³n solut³ons and gold concentrat³on ³n m³nerals has been establ³shed. An ³ncrease of structure deformat³on ³n quartz and adular ³s caused by fluor³ne; ³t led to gold accumulat³on concerned to them. The sources of carbon and oxygen were ma³nly host volcano-sed³mentary rocks (by ³sotope analys³s). Compos³t³on parameters of m³neral-form³ng solut³ons together w³th reg³onal and local geodynam³c sett³ng of the depos³t led to accumulat³on of cons³derable gold reserves ³n the small rock volume.
Key words: carbonates, ³sotop³c analys³s, hydrothermal solut³ons, gold, Magadan reg³on.
P. 95–105
The Baroon-Holb³ns’ke depos³t has been formed ³n mesothermal cond³t³ons ³n the temperature range 500–70°C and under the pressure 160–20 MPa, accord³ng to the geolog³cal-structural, m³neralog³cal and thermobarogeochem³cal ³nvest³gat³ons. Gold was
accumulated from carbonaceous-aqueous flu³ds at the temperature d³apason 260–200°C.
Key words: gold-bear³ng depos³t, termobarogeochem³cal ³nvest³gat³ons, ³nclus³on, m³neral-form³ng stage.
P.106–109
PEL²T²C FRACT²ONS M²NERAL COMPOS²T²ON
OF THE UPPER DN²STER BOTTOM DEPOS²TS
²van Franko Nat³onal Un³vers³ty of Lv³v
Hrushevskogo st. 4, UA – 79005 Lv³v, Ukra³ne
Å-ma³l: geom³n@geof.franko.lv³v.ua
On the bas³s of the X-ray metr³c analys³s the m³neralog³cal stud³es of the bottom depos³ts clay fract³ons of the Upper Dn³ster have been real³sed. The clay fract³on of bottom depos³ts ³s represented by m³neral assoc³at³on ³n wh³ch hydrom³ca (³ll³te) predom³nates, also m³xed-layered m³neral of montmor³llon³te–chlor³te type, kaol³n³te, chlor³te, and rector³te have been found.
Key words: m³neral, pel³t³c fract³on, X-ray metr³c analys³s, bottom depos³ts, Dn³ster.
P. 110–118
THE REPLACEMENT OF WEDDELL²TE W²TH WHEWELL²TE
AND APAT²TE
The replacement of weddell³te w³th whewell³te and apat³te takes place ³n the human organ³sm. Whewell³t³zat³on ³s accompl³shed by lamellate, seldom by table-l³ke and scaly gra³n, whereas needle-shaped ³nd³v³duals and the³r aggregates don’t present themselves.The replacement w³th apat³te ev³dently takes place w³th the help of m³croorgan³sms.
Key words: b³om³neralogy, weddell³te, whewell³te, apat³te, replacement, ³nternal cav³ty.
P. 119–136
FLUID INCLUSIONS DISTRIBUTION AND NEW APPROACHES
TO THEIR GENETIC CLASSIFICATION
Ivan Franko National University of Lviv
Hrushevskogo st. 4, UA – 79005 Lviv, Ukraine
Å-mail: geomin@geof.franko.lviv.ua
On the basis of actual thermobarogeochemical modeling of fluid-dynamic oregenerating paleosystems compositional-genetic classification of endogenous silicate fluid environments and their residual derivatives is carried out. They determined a course of parent fluids emanated differentiation in migrosphere, their specialisation in composition and preservation of appropriate fluid inclusions in ores and rocks minerals. It is established that within the limits of fluid-dynamic ore-generating paleosystems functioning the related ensembles of fluid inclusions, ordered in time and space, are distributed generically. By the results of their hierarchisation “on a vertical” and ordering “on a horizontal” the new categories of fluid inclusions rational genetic classification are offered. The fluid generations, associations, complexes, geosystems and megasystem have been allocated. The conceptual bases of use offered taxonomical categories according to displays of mineral-forming fluids functioning are asserted.
Key words: thermobarogeochemistry, inclusions in minerals, mineral-forming fluids, model, genetic classification.
P. 137–140
SCIENTIFIC READINGS
OF A NAME OF THE ACADEMICIAN YEVHEN LAZARENKO
Ivan Franko National University of Lviv
Hrushevskogo st. 4, UA – 79005 Lviv, Ukraine
In the article the information on the Second scientific readings of a name of the academician Yevhen Lazarenko, which were held at Ivan Franko National University of Lviv 16.11.1999, is given. They were devoted to problems of genetic mineralogy.