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The Unique Sabantuy Chromite Paleoplacer in the Sedimentary Cover of the Eastern European Platform
- Source :
- Geology of Ore Deposits. 62:542-546
- Publication Year :
- 2020
- Publisher :
- Pleiades Publishing Ltd, 2020.
-
Abstract
- —In the section of the sedimentary cover of the East European Platform, the new Sabantuy chromite ore occurrence was revealed. It is localized in Upper Kazanian sandstones of the erosional terrace above the floodplain of Malaya Berkutla Creek in the south-west of the Republic of Bashkortostan. The article presents the first results of geological, lithological, and mineralogical–geochemical studies of the new ore occurrence with signatures of an ancient coastal–marine placer. The Cr2O3 content in chromite sandstones (chromitolites) is 15.9–17.2 wt %. The bulk of the heavy fraction (67%) is composed of sub-angular and sub-rounded Cr-spinel grains 0.15–0.25 mm in size. Their mineralogical features indicate proximity to Cr-spinels from ultramafic rocks of ophiolite complexes.
- Subjects :
- Placer mining
geography
geography.geographical_feature_category
Geochemistry
Geology
010502 geochemistry & geophysics
Ophiolite
01 natural sciences
Mineral resource classification
Eastern european
Terrace (geology)
Geochemistry and Petrology
Ultramafic rock
Economic Geology
Sedimentary rock
Chromite
010503 geology
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 15556476 and 10757015
- Volume :
- 62
- Database :
- OpenAIRE
- Journal :
- Geology of Ore Deposits
- Accession number :
- edsair.doi...........635cf4d2867e8c3bdf305f482e02a895