The Unique Sabantuy Chromite Paleoplacer in the Sedimentary Cover of the Eastern European Platform

Рахимов, И. Р.; Saveliev, D. E.; Kholodnov, V. V.; Zamyatin, D. A.

doi:10.1134/s1075701520050062

Cited by 7 publications

(11 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…and foraminifers (Gavellina Grandis Schneid., C. unica Kotsch., Amphissites tscherdynzevi Posn., etc.) found in interlayers of marls and limestones [37]. The paleogeographic settings of sedimentation at the Kazanian Stage corresponded to the shallow sea environment with a transition to the continental conditions.…”

Section: Malaya Berkutla Creekmentioning

confidence: 87%

“…The results of the geological survey indicate that within 100 km from the Sabantuy ore occurrence, there are no mafic-ultramafic or volcanic complexes that could be considered sources for chromspinel [37]. The ore material was apparently concentrated in the Sabantuy paleoplacer due to intermediate collectors since a long direct transfer without precipitation of heavy minerals is hardly possible.…”

Section: Potential Sources Of Depositsmentioning

confidence: 98%

“…The above stratigraphic sequence is a part of carbonate-terrigenous sediments of the Kazanian Stage of the Permian System, which is correlated with the Late Roadian and Wordian Stages of the International Stratigraphic Chart [39] (Figure 2). According to [37], the sediments of the Kazanian stage of the Southern Pre-Urals occur on an eroded surface of red-colored sediments of the Ufimian Stage. It is subdivided into the Lower Kazanian (P 2 kz 1 ) and Upper Kazanian (P 2 kz 2 ) Substages.…”

Section: Malaya Berkutla Creekmentioning

confidence: 99%

See 2 more Smart Citations

Chromite Paleoplacer in the Permian Sediments at the East Edge of the East European Platform: Composition and Potential Sources

2021

View full text Add to dashboard Cite

A chromite occurrence called the Sabantuy paleoplacer was discovered in the Southern Pre-Ural region, at the east edge of the East-European Platform in the transitional zone to the Ural Foredeep. A ca. 1 m-thick chromite-bearing horizon is traced at a depth of 0.7–1.5 m from the earth’s surface for the area of ca. 15,000 m2. The chromspinel content in sandstones reaches 30–35%, maximum values of Cr2O3 are 16–17 wt.%. The grain size of detrital chromspinel ranges from 0.15 to 0.25 mm. Subangular octahedral crystals dominate; rounded grains and debris are rare. The composition of detrital chromspinel varies widely and is constrained by the substitution of Al3+ and Cr3+, Fe2+ and Mg2+ cations. Chemically, low-Al (Al2O3 = 12 wt.%) and high-Cr (Cr2O3 = 52–56 wt.%) chromspinel prevail. The compositional analysis using discrimination diagrams showed that most chromites correspond to mantle peridotites of subduction settings. Volcanic rocks could be an additional source for detrital chromites. It is confirmed by compositions of monomineralic, polymineralic and melt inclusions in chromspinels. The presented data indicates that ophiolite peridotites and related chromite ore associated with oceanic and island-arc volcanic rocks, widespread in the Ural orogen, could be the main sources of the detrital chromspinel of the Sabantuy paleoplacer.

show abstract

Section: Malaya Berkutla Creekmentioning

confidence: 87%

Section: Potential Sources Of Depositsmentioning

confidence: 98%

Section: Malaya Berkutla Creekmentioning

confidence: 99%

See 1 more Smart Citation

Chromite Paleoplacer in the Permian Sediments at the East Edge of the East European Platform: Composition and Potential Sources

2021

View full text Add to dashboard Cite

show abstract

“…The Sabantuy chromite paleoplacer has been recently found in Kazanian-stage sandy sediments in the Southern Pre-Urals. Ophiolitic and volcanogenic complexes of the Southern Urals are considered the main source for this placer [21,74].…”

Section: Geological Backgroundmentioning

confidence: 99%

“…The Sabantuy paleoplacer was discovered first and studied most comprehensively [21,74]. The ore bed has the stable thickness (0.9-1.0 m) and the greatest area (16,500 m 2 , 330 m long and 50 m wide).…”

Section: Sabantuy Paleoplacermentioning

confidence: 99%

Chromian Spinels from Kazanian-Stage Placers in the Southern Pre-Urals, Bashkiria, Russia: Morphological and Chemical Features and Evidence for Provenance

et al. 2022

View full text Add to dashboard Cite

Six minor alluvial chromite placers (Kolkhoznyi Prud, Verkhne-Yaushevo, Sukhoy Izyak, Bazilevo, Novomikhaylovka, Kiryushkino) and one major littoral placer (Sabantuy) were found in sandy sediments of the Kazanian stage of the Permian System (Late Roadian and Wordian Stages) in the Southern Pre-Urals. It is shown that the morphological features of chromian spinels are diverse, which is not evidence of the heterogeneity of the source. The bulk chemical composition of chromian spinels from all placers is similar and generally correlates with compositions of chromian spinels from the Kraka ophiolitic complex in the Southern Urals. The morphological diversity of grains, varied chemical composition and presence of melt inclusions in Ti-high octahedral grains of chromian spinels comply with the ophiolitic nature of the source. Thus, there is no need to refer to other sources for chromite ores but ophiolitic. The new placers expand the dissemination area of chromite-bearing deposits on the east edge of the East-European Platform and offer a prospect to discover new placers.

show abstract

Use of Western Kazakhstan Raw Materials for Producing Acid-Resistant Materials

Abdrakhimova,

Abdrakhimov

2023

Refract Ind Ceram

View full text Add to dashboard Cite

The Unique Sabantuy Chromite Paleoplacer in the Sedimentary Cover of the Eastern European Platform

Cited by 7 publications

References 1 publication

Chromite Paleoplacer in the Permian Sediments at the East Edge of the East European Platform: Composition and Potential Sources

Chromite Paleoplacer in the Permian Sediments at the East Edge of the East European Platform: Composition and Potential Sources

Chromian Spinels from Kazanian-Stage Placers in the Southern Pre-Urals, Bashkiria, Russia: Morphological and Chemical Features and Evidence for Provenance

Use of Western Kazakhstan Raw Materials for Producing Acid-Resistant Materials

Contact Info

Product

Resources

About