An Aluminum–Magnesium Variety of Caryopilite from Goethite–Neotocite–Rhodochrosite Ores of the Mazul Manganese Deposit, Krasnoyarsk Krai

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An Aluminum–Magnesium Variety of Caryopilite from Goethite–Neotocite–Rhodochrosite Ores of the Mazul Manganese Deposit, Krasnoyarsk Krai. / Brusnitsyn, A. I.; Belogub, E. V.; Platonova, N. V.; Shilovskikh, V. V.; Zhukov, I. G.

In: Geology of Ore Deposits, Vol. 61, No. 8, 01.12.2019, p. 818-826.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{61a5eea11cb4406dbdf849d426cce6c0,

title = "An Aluminum–Magnesium Variety of Caryopilite from Goethite–Neotocite–Rhodochrosite Ores of the Mazul Manganese Deposit, Krasnoyarsk Krai",

abstract = "Abstract: A variety of caryopilite enriched in Mg and Al from the goethite–neotocite–rhodochrosite ores of the Mazul manganese deposit in Krasnoyarsk Krai is described. The mineral occurs as sheaf-like and fibrous aggregates of fine-lamellar individuals intimately intergrown with goethite, hematite, rhodochrosite, and neotocite. The optical parameters of caryopilite are: Z = yellow, X = pale yellow, β ≈ 1.60, γ – α ≈ 0.010 – 0.015, and parallel extinction. The average chemical composition corresponds to the empirical formula (Mn1.95Mg1.61Fe2+ 0.63A10.58◻0.23)5.00[(Si3.88Al0.12)4.00O10](OH)6, where ◻ is vacancy. The unusually high Mg concentration and elevated Al content allow identification of a new aluminum–magnesium variety of caryopilite. It replaces sedimentary neotocite at low temperatures. It is suggested that at increasing temperature this variety of caryopilite loses Mg and Al, which incorporate into Mg–Mn chlorite and spessartine.",

keywords = "caryopilite, Krasnoyarsk Region, Mazulskoe manganese deposit, neotocite",

author = "Brusnitsyn, {A. I.} and Belogub, {E. V.} and Platonova, {N. V.} and Shilovskikh, {V. V.} and Zhukov, {I. G.}",

note = "Publisher Copyright: {\textcopyright} 2019, Pleiades Publishing, Ltd.",

year = "2019",

month = dec,

day = "1",

doi = "10.1134/S1075701519080026",

language = "English",

volume = "61",

pages = "818--826",

journal = "Geology of Ore Deposits",

issn = "1075-7015",

publisher = "МАИК {"}Наука/Интерпериодика{"}",

number = "8",

}

RIS

TY - JOUR

T1 - An Aluminum–Magnesium Variety of Caryopilite from Goethite–Neotocite–Rhodochrosite Ores of the Mazul Manganese Deposit, Krasnoyarsk Krai

AU - Brusnitsyn, A. I.

AU - Belogub, E. V.

AU - Platonova, N. V.

AU - Shilovskikh, V. V.

AU - Zhukov, I. G.

PY - 2019/12/1

Y1 - 2019/12/1

N2 - Abstract: A variety of caryopilite enriched in Mg and Al from the goethite–neotocite–rhodochrosite ores of the Mazul manganese deposit in Krasnoyarsk Krai is described. The mineral occurs as sheaf-like and fibrous aggregates of fine-lamellar individuals intimately intergrown with goethite, hematite, rhodochrosite, and neotocite. The optical parameters of caryopilite are: Z = yellow, X = pale yellow, β ≈ 1.60, γ – α ≈ 0.010 – 0.015, and parallel extinction. The average chemical composition corresponds to the empirical formula (Mn1.95Mg1.61Fe2+ 0.63A10.58◻0.23)5.00[(Si3.88Al0.12)4.00O10](OH)6, where ◻ is vacancy. The unusually high Mg concentration and elevated Al content allow identification of a new aluminum–magnesium variety of caryopilite. It replaces sedimentary neotocite at low temperatures. It is suggested that at increasing temperature this variety of caryopilite loses Mg and Al, which incorporate into Mg–Mn chlorite and spessartine.

AB - Abstract: A variety of caryopilite enriched in Mg and Al from the goethite–neotocite–rhodochrosite ores of the Mazul manganese deposit in Krasnoyarsk Krai is described. The mineral occurs as sheaf-like and fibrous aggregates of fine-lamellar individuals intimately intergrown with goethite, hematite, rhodochrosite, and neotocite. The optical parameters of caryopilite are: Z = yellow, X = pale yellow, β ≈ 1.60, γ – α ≈ 0.010 – 0.015, and parallel extinction. The average chemical composition corresponds to the empirical formula (Mn1.95Mg1.61Fe2+ 0.63A10.58◻0.23)5.00[(Si3.88Al0.12)4.00O10](OH)6, where ◻ is vacancy. The unusually high Mg concentration and elevated Al content allow identification of a new aluminum–magnesium variety of caryopilite. It replaces sedimentary neotocite at low temperatures. It is suggested that at increasing temperature this variety of caryopilite loses Mg and Al, which incorporate into Mg–Mn chlorite and spessartine.

KW - caryopilite

KW - Krasnoyarsk Region

KW - Mazulskoe manganese deposit

KW - neotocite

UR - http://www.scopus.com/inward/record.url?scp=85079118739&partnerID=8YFLogxK

U2 - 10.1134/S1075701519080026

DO - 10.1134/S1075701519080026

M3 - Article

AN - SCOPUS:85079118739

VL - 61

SP - 818

EP - 826

JO - Geology of Ore Deposits

JF - Geology of Ore Deposits

SN - 1075-7015

IS - 8

ER -

ID: 85931352