Results 111 to 120 of about 11,333 (211)

Minerals of the crichtonite group in ooids of mineralized volcaniclastic rocks from the Rudnogorskoe iron deposit (Eastern Siberia)

Записки Горного института
The article reports on the presence of minerals of the crichtonite group (MCG) in ooids of mineralized volcaniclastic rocks of the Rudnogorskoe iron deposit (Eastern Siberia).
Nuriya R. Ayupova, Valeriy V. Maslennikov, Aleksandr S. Tseluyko, Umed A. Yatimov, Svetlana M. Lebedeva   +4 more
doaj  

REE mineralisation within the Ditrău Alkaline Complex, Romania: Interplay of magmatic and hydrothermal processes [PDF]

The Ditrău Igneous Complex (north-east Romania) is a tilted Mesozoic alkaline intrusion (~19 km diameter), with enrichments in rare earth elements (REE), niobium, and molybdenum. It has the potential to contribute to a secure and sustainable European REE
Gabudianu, I., Goodenough, K.M., Hirtopanu, P., Honour, V. C., Shaw, R.A.   +4 more
core   +1 more source

East Greenland Caledonides: stratigraphy, structure and geochronology: Reconnaissance Pb-Pb dating of single mineral phases by the step-leaching method: results from the Caledonides of East Greenland [PDF]

Geological Survey of Denmark and Greenland Bulletin, 2004
Reconnaissance Pb-Pb step-leaching analyses have been carried out on garnet and kyanite from the Krummedal supracrustal sequence in East Greenland, yielding respectively Neoproterozoic and Caledonian ages.
Thrane, Kristine
doaj  

Metasomatism and Mélange Development at the Conditions of Modern Deep Slow Slip: P‐T‐t Evolution of Metasomatic Rocks (Pimu'nga/Santa Catalina Island, CA)

Geochemistry, Geophysics, Geosystems
The subduction interface hosts megathrust earthquakes and ductile creep, is fluid‐rich and chemically dynamic, and produces metasomatic rocks that may host episodic tremor and slow slip (ETS).
W. Hoover, C. B. Condit, A. Moser, S. Mulcahy, P. C. Lindquist, V. E. Guevara   +5 more
doaj   +1 more source

Synthesis of Ilmenite Nickel Titanite-Supported Carbon Nanofibers Derived from Polyvinylpyrrolidone as Photocatalyst for H₂ Production from Ammonia Borane Photohydrolysis. [PDF]

Polymers (Basel), 2023
Maafa IM, Zouli N, Abutaleb A, Yousef A, Qudsieh IY, Matar SM, Adam ASM, El-Halwany MM.   +7 more
europepmc   +1 more source

Composición y geoquímica de los minerales pesados de las facies Weald de la Cuenca del Maestrazgo (España): Implicaciones para la procedencia durante la etapa de rifting Jurásico Superior-Cretácico Inferior [PDF]

, 2005
Las areniscas en facies Weald de la Cuenca del Maestrazgo fueron depositadas durante la etapa de rift Jurásico superior-Cretácico inferior. Una característica de las cuencas intracratónicas desarrolladas durante periodos de rifting es la presencia de ...
Caja, Miguel Ángel, Lago San José, Marceliano, Marfil Pérez, Rafaela, Salas, Ramón   +3 more
core  

Magmatic surge requires two-stage model for the Laramide orogeny. [PDF]

Nat Commun, 2023
Schwartz JJ, Lackey JS, Miranda EA, Klepeis KA, Mora-Klepeis G, Robles F, Bixler JD.   +6 more
europepmc   +1 more source

U-Pb, Re-Os, and 40Ar/39Ar geochronology of the Nambija Au-skarn and Pangui porphyry Cu deposits, Ecuador: implications for the Jurassic metallogenic belt of the Northern Andes [PDF]

, 2018
New U-Pb, Re-Os, and 40Ar/39Ar dates are presented for magmatic and hydrothermal mineral phases in skarn- and porphyry-related ores from the Nambija and Pangui districts of the Subandean zone, southeastern Ecuador.
Chiaradia, Massimo, Coder, Joshua, Fontboté, Lluis, Gendall, Ian, Richards, Jeremy, Schaltegger, Urs, Stein, Holly, Vallance, Jean, Villeneuve, Mike   +8 more
core  

Contribution to the study of Fe-Ti mineralization from S. Torpes beach (Sines, Setúbal, Portugal) [PDF]

, 2013
[Abstract] Three samples from the natural heavy concentration of the upper back sands at S.Torpes beach was analysed by microscopy, MEV and microprobe in order to characterize the mineralogical composition of the ore minerals.
Moura, A., Pinto, F.
core   +1 more source

Separation, reserve estimation and radioactivity responsibility of the economic heavy minerals of East El- Arish black sand, North Sinai, Egypt. [PDF]

Sci Rep, 2023
Awad M, El Mezayen AM, El Alfi SM, Ali HH, Sayyed MI, Hanfi MY.   +5 more
europepmc   +1 more source