Structural and morphological features of Verba molybdenum ore mineralization

• Main Authors: M. M. Kostenko, P. A. Kondratenko
• Format: Article
• Language: English
• Published: Ukrainian State Geological Research Institute (UkrSGRI) 2018-03-01
• Series: Мінеральні ресурси України
• Subjects: volyn block of ukrainian shield; ustynivka granite massif; verba ore mineralization; structure; molybdenum ore-bearing rocks; ore minerals; greisens
• Online Access: https://mru-journal.com.ua/index.php/mru/article/view/248
• ISSN: 1682-721X; 2707-8698

The article shows the Verba ore mineralization of molybdenum (Volyn Block of the Ukrainian Shield) is associated with small granite intrusions. They are located in the south-eastern exocontact zone of the Ustynivka granite massif of the Paleoproterozoic Chisinau complex. The Verba minera­lization is a linear-coarse mineralized zone of the complex structure. This is confirmed by the development in its rocks of frequent, non-orientated veins of quartz, fluorite-quartz and carbonate-quartz compositions and numerous cracks. They have molybdenite and concomitant mineralization, as well as the wide spreading of molybdenite inclusions directly in the granites. A number of differently oriented faults and of small fracturing local zones, cataclasite, millonitized and breccias represents the internal structure of the mineralized zone. The characteristic of molybdenite the leading ore minerals is shown. It is morphologically represented by a closely connected scattered inclusions, rarely veined inclusions, and associated ore minerals: cassiterite, bismuth, native bismuth, emlectocytes, galena, sphalerite, chalcopyrite, pyrite, ilmenite, magnetite and titanomagnetite.