I. A. Ekimenkova

Lomonosov Moscow State University

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Co-Authors

Igor V. Pekov

Lomonosov Moscow State University

ИА

И. А. Бакшеев

Lomonosov Moscow State University

Vasiliy O. Yapaskurt

Lomonosov Moscow State University

ДА

Д. А. Ханин

A. N. Nesmeyanov Institute of Organoelement Compounds

Anatoliy Vladimirovich Zakharov

Zavaritsky Institute of Geology and Geochemistry

Natalia N. Koshlyakova

Lomonosov Moscow State University

A. V. Pakunova

Lomonosov Moscow State University

Vladimir Grigor'ev

Amur State University

Yu. V. Erokhin

Zavaritsky Institute of Geology and Geochemistry

ВВ

В. В. Смоленский

Togliatti State University

Cooperative Institutions

Lomonosov Moscow State University

Moscow State University

Russian Academy of Sciences

Ural State Mining University

Zavaritsky Institute of Geology and Geochemistry

A.V. Shubnikov Institute of Crystallography

Institute of Problems of Chemical Physics

A. N. Nesmeyanov Institute of Organoelement Compounds

Institute of Experimental Mineralogy

D. Mendeleyev University of Chemical Technology of Russia

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Crystal structure of litvinskite: A new natural representative of the lovozerite group

Crystallography Reports (2001)

N. A. Yamnova Yu. K. Egorov-Tismenko Igor V. Pekov I. A. Ekimenkova

Crystal (programming language)

10.1134/1.1358391

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Citations (9)

New data for distinguishing between hydrothermal synthetic, flux synthetic and natural corundum

Journal of gemmology/The journal of gemmology (2010)

Alexei S. Bidny Olga S. Dolgova И. А. Бакшеев I. A. Ekimenkova

Corundum

10.15506/jog.2010.32.1-4.7

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Citations (3)

Refinement of the crystal structure of fornacite using the rietveld method

Doklady Earth Sciences (2014)

Д. А. Ксенофонтов Yu. K. Kabalov Igor V. Pekov Natalia V. Zubkova I. A. Ekimenkova

Monoclinic crystal system

Tetrahedron

Polyhedron

Rietveld Refinement

Crystal (programming language)

Powder Diffraction

10.1134/s1028334x14050262

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Citations (5)

Chromian tourmaline and Cr-Sb-W-bearing rutile of the Kamennoozerskoe chromitite occurrence, Central Urals, Russia

Moscow University Bulletin Series 4 Geology (2023)

И. А. Бакшеев Yu. V. Erokhin I. A. Ekimenkova Anatoliy Vladimirovich Zakharov Vladimir Grigor'ev

This paper is focused on the tourmaline and associated minerals from veinlets cutting chromitite of the Kamennoozerskoe occurrence, which is a part of the Shabrovskoe district in the Central Urals. Tourmaline belongs to the dravite—oxy-dravite solid solution series, contains Cr (0,52–2,06 а.ф.), Ni (до 0,03 а.ф.), V (до 0,02 а.ф.) The Raman spectroscopy indicates Fe 3+ in tourmaline. Rutile associated with tourmaline contains, wt %: 4.68–11.69 Sb 2 O 5 , 2.00–8.02 Cr 2 O 3 , and 0,88–1,14 WO 3 . Combination of high Sb and Cr contents in rutile is established possibly for the first time. It is suggested that tourmaline and associated minerals from the veinlets cutting chromite were formed in oxidizing environment.

Tourmaline

Rutile

Ilmenite

Chromitite

Chromite

10.55959/msu0579-9406-4-2023-63-3-63-76

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Citations (0)

Minerals of the beudantite–segnitite series from the oxidation zone of the Berezovskoe gold deposit, middle Urals: Chemical variations, behavior of admixtures, and antimonian varieties

Geology of Ore Deposits (2016)

Igor V. Pekov Д. А. Ханин Vasiliy O. Yapaskurt A. V. Pakunova I. A. Ekimenkova

Alunite

Structural formula

10.1134/s1075701516070096

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Citations (6)

Chromian Tourmaline and Cr–Sb–W-Bearing Rutile of the Kamennoozerskoe Chromitite Occurrence, Central Urals, Russia

Moscow University Geology Bulletin (2023)

И. А. Бакшеев Yu. V. Erokhin I. A. Ekimenkova Anatoliy Vladimirovich Zakharov Vladimir Grigor'ev

Tourmaline

Rutile

Ilmenite

Chromitite

10.3103/s0145875223040038

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Citations (0)

Refinement of the Crystal Structure of a Fe,Sr-Analogue of Kentbrooksite

Crystallography Reports (2000)

I. A. Ekimenkova

10.1134/1.1327653

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Citations (7)

Two new rare-earth-rich mineral associations in the Ilímaussaq alkaline complex, South Greenland

Geology of Greenland Survey Bulletin (2001)

Igor V. Pekov I. A. Ekimenkova

Two new types of REE-rich mineral associations have been discovered at Kvanefjeld in the northern part of the Ilímaussaq alkaline complex. Type 1 consists of ussingite veins intersecting lujavrite and containing 5–7% nacareniobsite-(Ce) and 2–4% steenstrupine-(Ce); the adjacent altered lujavrite contains up to 10–12% nacareniobsite-(Ce). Type 2 consists of cavernous sodalite-rich veinlets and vugs in lujavrite containing 5–8% vitusite-(Ce). The chemical compositions and unit cell parameters of REE minerals are given. Nacareniobsite-(Ce) and vitusite-(Ce) were considered to be extremely rare minerals in the Ilímaussaq complex. Nacareniobsite-(Ce) is now known to be of more widespread occurrence in some hyper-agpaitic rocks of the Ilímaussaq complex, and vitusite-(Ce) is known to be the precursor of the widespread occurrence of the yellow pseudomorphs termed erikite.

Sodalite

Pseudomorph

Nepheline

10.34194/ggub.v190.5185

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Citations (4)

The Cr6+ impurity in supergene oxosalts in chromate mineralization occurrences of the Urals

Moscow University Geology Bulletin (2016)

Д. А. Ханин Igor V. Pekov A. V. Pakunova I. A. Ekimenkova Vasiliy O. Yapaskurt

Supergene (geology)

Alunite

Chromate conversion coating