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Geochemical and Microbiological Analysis of S ambe Hot Springs, S himane Prefecture, J apan
Author(s) -
Sasaki Keiko,
Uejima Yoshitaka,
Sakamoto Atsushi,
Yu Qianqian,
Ishibashi Junichiro,
Okibe Naoko,
Hirajima Tsuyoshi
Publication year - 2013
Publication title -
resource geology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.597
H-Index - 43
eISSN - 1751-3928
pISSN - 1344-1698
DOI - 10.1111/rge.12002
Subject(s) - birnessite , chemistry , biomineralization , crystallinity , manganese , oxidizing agent , environmental chemistry , nuclear chemistry , mineralogy , manganese oxide , geology , crystallography , paleontology , organic chemistry
Microbiological contribution to the formation of the manganese deposits in S ambe hot springs, S himane, was investigated in combination with water chemistry, characterization of sediments and microbial community structure. Analysis of bacterial and fungal community structure based on DNA extracted from a M n‐oxidizing enrichment culture indicated close matches with P seudomonas putida , P homa sp. and P lectosphaerella cucumerina , all M n‐oxidizing microorganisms. These sediments were poorly crystalline and formed at neutral pH values, which is characteristic of biogenic precipitates. The EPMA results demonstrated a positive correlation between M n and B a contents in well‐crystalline M n oxide grains. Substantial B a contents were observed inside M n oxide grains. These findings indicated that B a contents in sediments are influenced by not only aqueous B a 2+ concentrations but also crystallinity of biogenic birnessite. Barium would be incorporated in birnessite during biomineralization.