Depositional environment of Paleogen amber-bearing quartz-glauconite sands from Zdolbuniv (Rivne region, NW Ukraine): mineralogical and petrological evidences

Natkaniec-Nowak Lucyna (), Dumańska-Słowik Magdalena, Naglik Beata, Smoliński Wojciech, Stach Paweł, Kubica Dorota, Ładoń Karolina, Melnychuk Viktor, Krynickaya Мariya B. and Sikorska-Jaworowska Magdalena
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Ładoń Karolina: Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, Krakow, Poland
Krynickaya Мariya B.: National University of Water and Environmental Engineering, Rivne, Ukraine
Sikorska-Jaworowska Magdalena: Polish Geological Institute – National Research Institute, Warsaw, Poland

Gospodarka Surowcami Mineralnymi / Mineral Resources Management, 2017, vol. 33, issue 4, 45-62

Abstract: Amber-bearing sands from Zdolbuniv mine are Paleogene fine-grained (0.6-0.12 mm) clastic rocks. The material is poorly rounded and moderately sorted out. It mainly consists of quartz, glauconite, and subordinately, feldspars (K-feldspars and plagioclases), mica, carbonates, zircon, epidote,fossil resins (Baltic amber) and ore minerals such as hematite, rutile, anatase, ilmenite. The presence of glauconite in the sands proves that sedimentation basin had to be marine reservoir. The variable composition of individual glauconite grains suggests the environmental conditions had to change during the sedimentation of clastic rocks. The occurrence of minerals, assembly such as zircon, epidote, ilmenite, rutile, anatase in the sands as well as the brown CL color of quartz grains, may suggest that majority of clastic material originated from metamorphic rocks, most probably coming from the Ukrainian Shield. Together with metamorphic material the fragment of fossil resins, i.e. Baltic amber, from the Paleogene off-shore forests could be transported to the sedimentation basin. Nowadays the bottom part of the analyzed profile is the most promising for the recovery of glauconite, whereas the exploration of Baltic amber may be initiated from the top of the profile.

Keywords: amber-bearing sands; Rivne region; Zdolbuniv town; Ukraine (search for similar items in EconPapers)
Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:vrs:gosmin:v:33:y:2017:i:4:p:45-62:n:1

DOI: 10.1515/gospo-2017-0041

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