Results 11 to 20 of about 387,571 (165)

MAGNETITE FROM COASTAL DEPOZITS OF BLACK AND AZOV SEAS

open access: yesГеологія і корисні копалини Світового океану, 2019
The article contains information about the nature of distribution and the mineral composition of modern coastal-marine deposits of the Black Sea and Sea of Azov.
Yu.I. Inozemtcev   +3 more
doaj   +2 more sources

Titaniferous-Vanadiferous, Magnetite-Ilmenite Mineralization in a Mafic Suite within the Chhotanagpur Gneissic Complex, Bihar, India [PDF]

open access: yes, 2022
Titanium or vanadium metals or their alloys are important industrial metals/alloys. Because these resources are in short supply, the investigation of potential titaniferous-vanadiferous deposits needs special attention to bridge the supply-demand gap ...
Ashmeer Mohammad   +11 more
core   +1 more source

Significant Enrichment of Rare Earth Element Concentrations in Stream Sediments of Sharm El-Sheikh Area, Southern Sinai-Egypt: Geochemical Prospecting and Heavy Mineral Survey

open access: yesIraqi Geological Journal, 2023
Economic rare earth element bearing-heavy mineral accommodation in alluvial deposits (stream sediments) is a well-known process caused by varying rates of weathering and transportation of heavy minerals and sediments, which is significant in ...
Omnia Elsayed   +3 more
doaj   +1 more source

Provenance of heavy minerals in the Quaternary deposits of the Lemme outcrop, Estonia, based on optical microscopy, X-ray diffractometry and scanning electron microscope microanalysis [PDF]

open access: yesEstonian Journal of Earth Sciences, 2019
This paper is a methodological development, where optical microscopy, X-ray diffractometry (XRD) and microanalysis under a scanning electron microscope (SEM) were used for comparative determination of heavy minerals in Quaternary sandy sediments in the ...
Johanna-Iisebel Järvelill   +4 more
doaj   +1 more source

Discrimination of Mineralization Types of Skarn Deposits by Magnetite Chemistry

open access: yes, 2022
There are different mineralization types for skarn deposits with various origins and ore-forming conditions. Magnetite is one of the main ore minerals in skarn deposits, but whether chemical compositions of magnetite can be used to discriminate different
Liang Qi   +4 more
core   +1 more source

Mineralogy and Provenance of Iron Sand Deposits from Cipatujah and Cikalong, Tasikmalaya, West Java, Indonesia

open access: yesIraqi Geological Journal, 2023
Provenance, paleoweathering, and tectonic environment were studied on the iron sand samples taken from Cipatujah and Cikalong areas in Tasikmalaya, West Java, Indonesia using their mineralogical and geochemical data.
Hariro Zahra   +5 more
doaj   +1 more source

Magnetite chemistry in the Dalli porphyry Cu-Au deposit, central Urumieh-Dokhtar Magmatic Arc (UDMA)

open access: yesJournal of Economic Geology, 2023
The Dalli porphyry Cu-Au deposit is located in the central parts of Urumieh –Dokhtar Magmatic Arc (UDMA). This deposit is formed via the emplacing of Miocene intrusions mainly containing diorite and quartz diorite within the Eocene andesite and ...
Alireza Zarasvandi   +4 more
doaj   +1 more source

Zinc Contents of Mafic Micerals in Granitic Rocks, with Special Reference to Ore Chemistry [PDF]

open access: yes, 2003
In order to know the reason why the Cu/Zn-Pb ratios of skarn-type deposits related with the ilmenite-series granitic rocks are markedly higher than those related with the magnetite-series, comparative mineralogical studies were carried out for the two ...
Inoue, Yoshinori   +2 more
core   +1 more source

Ore Genesis of the Abu Ghalaga Ferro-Ilmenite Ore Associated with Neoproterozoic Massive-Type Gabbros, South-Eastern Desert of Egypt: Evidence from Texture and Mineral Chemistry

open access: yes, 2023
Massif-type mafic intrusions (gabbro and anorthosite) are known for their considerable resources of vanadium-bearing iron–titanium oxide ores.
Wael Fahmy   +8 more
core   +1 more source

Mineralogy and Petrology of an Olivine Diabase Sill Complex and Associated Unusually Potassic Granophyres, Sierra Ancha, Central Arizona [PDF]

open access: yes, 1969
The Precambrian Sierra Ancha sill complex, 700 to 800 feet thick, was intruded into flat-lying sedimentary rocks of the Apache Group in central Arizona. The bulk of the complex consists of a central layer of feldspathic olivine-rich diabase and upper and
Smith, Douglas
core   +1 more source

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