Composition and parageneses of massive pyrolusite from the deep-water basin of the Sea of Japan
| Autor: | N.V. Astakhova, E.A. Lopatnikov |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Pyrolusite
geography geography.geographical_feature_category Birnessite 010504 meteorology & atmospheric sciences Seamount chemistry.chemical_element Mineralogy Geology Crust Manganese engineering.material 010502 geochemistry & geophysics 01 natural sciences Ferromanganese Hydrothermal circulation Geophysics Todorokite chemistry engineering 0105 earth and related environmental sciences |
| Zdroj: | Russian Geology and Geophysics. 57:1465-1476 |
| ISSN: | 1068-7971 |
| DOI: | 10.1016/j.rgg.2016.09.003 |
| Popis: | Hard fragments (crushed only by a hammer) of manganese deposits differing strongly in appearance from the regional ferromanganese crusts were sampled from depths of 3500–3200 m during the dredging of an unnamed seamount in the Central Basin of the Sea of Japan. Their surface has a black carbonaceous coating; after its removal, the crusts become steel-gray. The specific weight of these crust fragments is 3.35 g/cm3, whereas the regional crusts have a specific weight of |
| Databáze: | OpenAIRE |
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