Alabandite (MnS) in metamorphosed manganiferous rocks at Morro da Mina, Brazil: palaeoenvironmental significance
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F19%3A00000080" target="_blank" >RIV/00025798:_____/19:00000080 - isvavai.cz</a>
Result on the web
<a href="https://pubs.geoscienceworld.org/eurjmin/article/31/5-6/973/572837/Alabandite-MnS-in-metamorphosed-manganiferous" target="_blank" >https://pubs.geoscienceworld.org/eurjmin/article/31/5-6/973/572837/Alabandite-MnS-in-metamorphosed-manganiferous</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1127/ejm/2019/0031-2879" target="_blank" >10.1127/ejm/2019/0031-2879</a>
Alternative languages
Result language
angličtina
Original language name
Alabandite (MnS) in metamorphosed manganiferous rocks at Morro da Mina, Brazil: palaeoenvironmental significance
Original language description
The mineral alabandite, cubic MnS with variable amounts of FeS, occurs in a number of mineral assemblages in manganiferous metasedimentary rocks, some of which are mined as manganese ore. One of them is Morro da Mina, Mina Gerais, Brazil, where alabandite is a minor component of 'queluzite', a manganese-silicate-carbonate rock. The Morro da Mina alabandite contains 7.3 +/- 1.4 molpercent FeS and makes up aggregates with graphite and molybdenite. A comparison of alabandite occurrences worldwide indicates four main types of mineral assemblages: (1) alabandite + graphite; (2) alabandite + graphite + molybdenite; (3) alabandite + rhodochrosite + molybdenite; (4) and alabandite + rhodochrosite. The different assemblages suggest that manganese sulfide formed in a range of marine palaeoenvironments, from highly reducing and sulfidic - i.e., euxinic - settings to manganeseoxide-precipitating conditions. Morro da Mina represents assemblage (2), which is characteristic of a euxinic water column in a stratified ocean. In general, our comparison of alabandite-bearing mineral assemblages indicates that palaeoenvironmental information can be retrieved from sedimentary rocks that experienced variable degrees of metamorphic overprint.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10504 - Mineralogy
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
European Journal of Mineralogy
ISSN
0935-1221
e-ISSN
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Volume of the periodical
31
Issue of the periodical within the volume
5-6
Country of publishing house
DE - GERMANY
Number of pages
10
Pages from-to
973-982
UT code for WoS article
000505169400009
EID of the result in the Scopus database
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