Results 21 to 30 of about 394,527 (166)

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

Lithological and mineralogical structure of accumulative beach deposits of the Black Sea Danube-Dniester segment

open access: yesВісник Київського національного університету імені Тараса Шевченка. Серія Геологія, 2022
The investigations of accumulative-sand deposits of the Black Sea coastline on the area from the village Liman (Katranka spit) to the village Karolina Bugaz (Odessa region) have been carried out. The length of the coastal line in the study area is close
V. Nesterovskyi   +2 more
doaj   +1 more source

Magnetite and ilmenite from some Finnish rocks [PDF]

open access: yes, 1972
Coexisting accessory magnetite and ilmenite -were separated and chemically analysed from five Finnish Precambrian rocks: anorogenic olivine diabase and gabbroanorthosite as well as three metamorphosed Svecofennian quartz diorites.
P. Ojanperä, I. Haapala
core   +1 more source

Prospects of integrated development of Bakchar iron deposit (Western Siberia, Russia)

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2018
The relevance of the research. The authors have analyzed and estimated complex resources of the Bakchar deposit. Until now Bakchar deposit has been considered exclusively as a marine oolitic iron deposit.
Maksim Andreevich Rudmin   +3 more
doaj   +1 more source

Granitoids of Sanandaj-Sirjan Zone that are concurrent with Cimmerian Orogeny (178-160 Ma) belong to ilmenite series (S-type): investigation of reason for lacking the porphyry tin mineralization

open access: yesJournal of Economic Geology, 2021
ntroduction The granitic rocks are divided into magnetite and ilmenite series (Ishihara 1977), coinciding spatially with the I-type (εNdi0; (87Sr/86Sr)i~0.704-0.706) and S-type granites (εNdi0.707, N-MORB normalized patterns with enrichment in Low- and ...
Mohammad Hassan Karimpour   +2 more
doaj   +1 more source

Magnetite and ilmenite of Westland beaches : analytical studies bearing on their sources and accumulation patterns. [PDF]

open access: yes, 1981
The extensive accumulations of black sands along the beaches of the West Coast of the South Island contain ilmenite and magnetite. In the Jackson Bay - Haast area magnetite predominates, but to the north the sands are ilmenite-rich.
Chew, Pok Min
core   +1 more source

The Magmatic-Hydrothermal Ore-Forming Processes of the Tonggou Cu-Zn Deposit, NW China: Constraints from Magnetite Chemistry and Fluid Inclusions

open access: yes, 2022
The Tonggou deposit is a porphyry Cu and vein-type Cu-Zn mineralization system located in the Bogda Orogenic Belt, north of Eastern Tianshan. Systematic fluid inclusion analyses were performed on granular quartz from the magnetite–quartz stage and ...
Chang-Cheng Han   +3 more
core   +1 more source

Origin of high-Ti magnetite in magmatic-hydrothermal systems: evidence from iron oxide-apatite (IOA) deposits of eastern China

open access: yes, 2022
Magnetite chemistry has been widely used to distinguish igneous versus hydrothermal origins for a range of magnetite-bearing mineral deposits. However, the origin of Ti-rich magnetite with ilmenite lamellae from iron oxide-apatite (IOA) deposits and ...
Zhao, Xin-Fu   +6 more
core   +1 more source

Natural Radioactivity and Radiological Implications of Stream Sediments at Wadi Aidib Area, South Eastern Desert, Egypt

open access: yesIraqi Geological Journal, 2022
Wadi Aidib lies at the extreme southern part of the Eastern Desert, Egypt, between 22o15'- 22o21' N and Longitudes 36o20'-36o30' E. Landsat ETM+ false color composite image (bands 3, 2, 1) was used for regional discrimination for different rock ...
Moustafa B. Bayoumi   +3 more
doaj   +1 more source

Ilmenite Alteration and Its Adsorption and Catalytic Reduction in U Enrichment in Sandstone-Hosted U Deposits from the Northern Ordos Basin, North China

open access: yes, 2022
Detrital ilmenite and its altered minerals are common in sandstone-hosted U deposits in the northern Ordos Basin, north China. Petrographic observation, SEM-EDS, EMPA, and LA-MC-ICP-MS were utilized to characterize the spatial relationship between ...
De-Ru Xu   +4 more
core   +1 more source

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