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Геохимические условия образования кварцевых жил на золоторудных проявлениях Манитанырдского района

Геохимические условия образования кварцевых жил на золоторудных проявлениях Манитанырдского района

Abstract

In order to determine mineral-forming conditions we have studied gas-liquid inclusions in transparent minerals presented in gold-bearing and barren veins from two deposits: Verkhneniyayuskoye-1 and Verkhneniyayuskoye-2. It was established that thermobarogeochemical characteristics of vein quartz have no differences between gold-bearing and barren varieties of this mineral. Monophase water inclusions are typical of them homogenizing temperatures of two-phase inclusions are about 70-390°С. Design pressure is about 1-200 kg/cm2. Salt structure in inclusions is homogeneous. Eutectic temperature of the inclusions is about -23 and -35°С that corresponds to water-salt systems NaCl-KCl-H2O and NaCl-MgCl2-H2O. Isotope composition of inclusions in quartz are the evidence of two sources for mineral formationpallial and crustal.

Для определения условий минералообразования на территории рудопроявлений Верхненияюское-1 и Верхненияюское-2 нами изучены газово-жидкие включения в прозрачных минералах, входящих в состав золоторудных и незолоторудных кварцевых жил. Было установлено, что золоторудный и незолоторудный кварц не отличается по термобарогеохимическим показателям. Для них характерны однофазовые и двухфазовые включения, температуры гомогенизации последних изменяются в пределах (70-390) °С. Расчетное давление составляет 1-200 кг/см2. Солевой состав во включениях однообразен. Температура эвтектики во включениях равна -23 и -35 °С, что соответствует водно-солевым системам NaCl-KCl-H2O и NaCl-MgCl2-H2O. Изотопный состав во включениях в кварце свидетельствует о наличии двух источников минералообразования: мантийном и коровом.

Keywords

рудопроявления золота, гомогенизация, газово-жидкие включения, изотопный состав включений, температура эвтектики, хроматография

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
bronze