Ferromanganese nodules of freshwater reservoirs of Ol'khon Island (Baikal) and the Kulunda Plain (West Siberia)

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Ferromanganese nodules of freshwater reservoirs of Ol'khon Island (Baikal) and the Kulunda Plain (West Siberia). / Strakhovenko, V. D.; Shkol'nik, S. I.; Danilenko, I. V.

в: Russian Geology and Geophysics, Том 59, № 2, 01.02.2018, стр. 123-134.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{46cd3d84d60f4dc49ce1a2facf6132a6,

title = "Ferromanganese nodules of freshwater reservoirs of Ol'khon Island (Baikal) and the Kulunda Plain (West Siberia)",

abstract = "Morphology and mineralogical and geochemical compositions of freshwater ferromanganese nodules of Ol'khon Island (Sasa Formation) and Kulunda Plain (Lake Porozhnee) were studied. The study has shown rhythmic structures of the nodules, formed by macro- and microlayers with mineralized microflora. The layers are composed of either crystalline Mn mineral phases and finely dispersed Fe phases (Lake Porozhnee) or, on the contrary, crystalline goethite and X-ray amorphous Mn phases (Ol'khon Island). Separation of Mn and Fe mineral phases in the nodules proceeded during their formation and diagenesis. The freshwater nodules show both high (Lake Porozhnee) and low (Ol'khon Island) Mn/Fe ratios. The predominance of Fe phase in the Ol'khon nodules accounts for their high contents of REE, including Ce. The Porozhnee nodules grew, most likely, more rapidly, which is reflected in their low REE contents and Ce anomaly. The examined chemical and mineral compositions, textures, and structures of the nodules testify to the low-temperature hydrothermal source of their ore substance.",

keywords = "geochemistry, mineralogy, ferromanganese nodules, freshwater reservoirs, Siberia, RARE-EARTH-ELEMENTS, LAKE BAIKAL, BOTTOM SEDIMENTS, MANGANESE, SEA, MN, FE, GENESIS, CRUSTS, MINERALIZATION",

author = "Strakhovenko, {V. D.} and Shkol'nik, {S. I.} and Danilenko, {I. V.}",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2018",

month = feb,

day = "1",

doi = "10.1016/j.rgg.2018.01.010",

language = "English",

volume = "59",

pages = "123--134",

journal = "Russian Geology and Geophysics",

issn = "1068-7971",

publisher = "Elsevier Science B.V.",

number = "2",

}

RIS

TY - JOUR

T1 - Ferromanganese nodules of freshwater reservoirs of Ol'khon Island (Baikal) and the Kulunda Plain (West Siberia)

AU - Strakhovenko, V. D.

AU - Shkol'nik, S. I.

AU - Danilenko, I. V.

PY - 2018/2/1

Y1 - 2018/2/1

N2 - Morphology and mineralogical and geochemical compositions of freshwater ferromanganese nodules of Ol'khon Island (Sasa Formation) and Kulunda Plain (Lake Porozhnee) were studied. The study has shown rhythmic structures of the nodules, formed by macro- and microlayers with mineralized microflora. The layers are composed of either crystalline Mn mineral phases and finely dispersed Fe phases (Lake Porozhnee) or, on the contrary, crystalline goethite and X-ray amorphous Mn phases (Ol'khon Island). Separation of Mn and Fe mineral phases in the nodules proceeded during their formation and diagenesis. The freshwater nodules show both high (Lake Porozhnee) and low (Ol'khon Island) Mn/Fe ratios. The predominance of Fe phase in the Ol'khon nodules accounts for their high contents of REE, including Ce. The Porozhnee nodules grew, most likely, more rapidly, which is reflected in their low REE contents and Ce anomaly. The examined chemical and mineral compositions, textures, and structures of the nodules testify to the low-temperature hydrothermal source of their ore substance.

AB - Morphology and mineralogical and geochemical compositions of freshwater ferromanganese nodules of Ol'khon Island (Sasa Formation) and Kulunda Plain (Lake Porozhnee) were studied. The study has shown rhythmic structures of the nodules, formed by macro- and microlayers with mineralized microflora. The layers are composed of either crystalline Mn mineral phases and finely dispersed Fe phases (Lake Porozhnee) or, on the contrary, crystalline goethite and X-ray amorphous Mn phases (Ol'khon Island). Separation of Mn and Fe mineral phases in the nodules proceeded during their formation and diagenesis. The freshwater nodules show both high (Lake Porozhnee) and low (Ol'khon Island) Mn/Fe ratios. The predominance of Fe phase in the Ol'khon nodules accounts for their high contents of REE, including Ce. The Porozhnee nodules grew, most likely, more rapidly, which is reflected in their low REE contents and Ce anomaly. The examined chemical and mineral compositions, textures, and structures of the nodules testify to the low-temperature hydrothermal source of their ore substance.

KW - geochemistry

KW - mineralogy

KW - ferromanganese nodules

KW - freshwater reservoirs

KW - Siberia

KW - RARE-EARTH-ELEMENTS

KW - LAKE BAIKAL

KW - BOTTOM SEDIMENTS

KW - MANGANESE

KW - SEA

KW - MN

KW - FE

KW - GENESIS

KW - CRUSTS

KW - MINERALIZATION

UR - http://www.scopus.com/inward/record.url?scp=85044364585&partnerID=8YFLogxK

U2 - 10.1016/j.rgg.2018.01.010

DO - 10.1016/j.rgg.2018.01.010

M3 - Article

AN - SCOPUS:85044364585

VL - 59

SP - 123

EP - 134

JO - Russian Geology and Geophysics

JF - Russian Geology and Geophysics

SN - 1068-7971

IS - 2

ER -

ID: 12178992