Results 21 to 30 of about 2,801 (218)
Mineralogical and geochemical investigations on Finnish lake ores [PDF]
Bulletin of the Geological Society of Finland, 1976 The limnic ferromanganese ore concretions in some Finnish lakes are described. Their chemical and mineral compositions have been measured as have their natural surroundings — the latter by means of physico-chemical in-situ analysis.
P. Halbach
doaj +1 more source
Development of an analytical model for the extraction of manganese from marine nodules [PDF]
, 2019 Multivariable analytical models provide a descriptive (albeit approximate) mathematical relationship between a set of independent variables and one or more dependent variables.
Castillo Segura, Jonathan Alejandro +5 more
core +2 more sources
Optimization of parameters for the dissolution of Mn from manganese nodules with the use of tailings in an acid medium [PDF]
, 2019 Manganese nodules are an attractive source of base metals and critical and rare elements and are required to meet a high demand of today’s industry. In previous studies, it has been shown that high concentrations of reducing agent (Fe) in the system are ...
Castillo Segura, Jonathan Alejandro +6 more
core +1 more source
Frontiers in Marine Science, 2023 Fe-Mn polymetallic crusts and nodules from the South China Sea (SCS) consist of submarine ferromanganese (Fe-Mn) oxide precipitates, and represent important marine mineral resource with substantial economic and scientific research value. Previous studies
Yingzhi Ren +8 more
doaj +1 more source
Search for Magnetic Monopoles Trapped in Matter [PDF]
, 1995 There have been many searches for magnetic monopoles in flight, but few for monopoles in matter. We have searched for magnetic monopoles in meteorites, schists, ferromanganese nodules, iron ores and other materials.
A. Polyakov +18 more
core +2 more sources
ON THE NATURE OF OXIDE FERROMANGANESE ORES OCEAN
Известия высших учебных заведений: Геология и разведка, 2018 Oxide ores of the global ocean — cobalt-rich crusts and ferromanganese nodules are of bacterial origin and identified as stromatolites and onkolites. Pillar structure of ferromanganese stromatolites and festoon-shaped structures of onkolites represent
V. V. AVDONIN +2 more
doaj +1 more source
Journal of Asian Earth Sciences: X, 2022 Shimajiri–Mahji refers to dark-red soil covering Ryukyu limestone that is characterized by buried ferromanganese (Fe–Mn) nodules, and it is widely distributed in Okinawa Island, southwestern Japan.
Keishiro Azami +2 more
doaj +1 more source
Almost billfish: convergent longirostry, micro-dentition, and possible glandular sinuses in a large teleost fish from the Upper Cretaceous of Northern Italy. [PDF]
J AnatA fossil rostrum fragment of a large teleost fish from the Upper Cretaceous of Northern Italy reveals remarkable anatomical convergences with Cenozoic and Recent billfishes (marlins, swordfishes, and akin). The extinct group Plethodidae independently acquired a long snout, micro‐teeth, and oil‐gland sinuses well before the evolution of true billfishes.
Serafini G +5 more
europepmc +2 more sources
An assessment of bottom current controlled sedimentation in Pacific Ocean abyssal environments [PDF]
, 2018 The effect of the circulation of polar-sourced dense waters on the deep seafloor is still largely unknown. This paper presents multibeam bathymetric evidence for the existence of present-day contourite drifts on the central Pacific ocean at depths ...
De Bruycker, Wouter +2 more
core +2 more sources
BASICS OF OCEANIC MINERALOGENESIS [PDF]
Геологія і корисні копалини Світового океану, 2020 The article is devoted to topical issues of solid minerals of the World Ocean, which are of interest for more than 45—50 years and are actively studied by a lot of countries.
S.I. Andreev
doaj +1 more source