Results 31 to 40 of about 8,361 (213)

Geological and Mineralogical Analysis of Zhuantobe Skarns in Central Kazakhstan Considering the Influence of Textural Features on Iron Ore Quality

Applied Sciences
The study of the material composition, textural, and structural features of skarns and magnetite ores is of great importance for increasing the efficiency of iron ore mining and its subsequent processing and enrichment.
Valeriy Korobkin, Assel Nygmanova, Zhamal Tulemissova, Akhan Chaklikov   +3 more
doaj   +1 more source

Geochemistry and Geochronology of Magmatic Rocks in Southwestern and Northeastern Cambodia: Implications for the Tectonic Evolution and Metallogenesis of the Loei Fold Belt

Geological Journal, EarlyView.
The composition of intrusive rocks suggests that the magma was likely generated in a subduction‐related setting. The arc crustal thickness in the Phnom Sro Ngam and Halo Prospects was probably < 40 km during emplacement. Zircon U–Pb age range indicates a correlation with Loei Fold Belt magmatic activity.
Sirisokha Seang, Khin Zaw, Kakda Kret, Ivan Belousov, Kotaro Yonezu, Koichiro Watanabe, Charles Makoundi   +6 more
wiley   +1 more source

Metamorphic history of skarns, origin of their protolith and implications for genetic interpretation; an example from three units of the Bohemian Massif

, 2012
*Corresponding author Skarns in the Svratka Unit, in the neighbouring part of the Moldanubian Zone and in the Kutna Hora Complex were studied with respect to their metamorphic evolution, major- and trace-element geochemistry, oxygen isotopic composition ...
Jaroslava Pertoldová, P. Týcová, K. Verner, M. Košuličová, Z. Pertold, J. Košler, J. Konopásek, M. Pudilová   +7 more
semanticscholar   +1 more source

Geochemical signs of magmatic commingling in the Dashkesan gabbro-granite intrusion (Dashkesan iron ore deposit, Azerbaijan)

Известия высших учебных заведений: Геология и разведка
Background. Geochemical signs of magmatic commingling are considered on the example of the Dashkesan Fe–Co deposit using geochemical data and mathematical modeling.Aim.
Е. А. Sadikhov, А. S. Desyatkin, А. А. Veliev, Е. К. Khmarin   +3 more
doaj   +1 more source

Appraisal of Six Natural Mica Reference Materials for In Situ Rb‐Sr Geochronology

Geostandards and Geoanalytical Research, EarlyView.
Key Points Evaluated six natural mica reference materials for in situ LA‐ICP‐MS/MS Rb‐Sr geochronology using geochemical, microstructural and isotopic characterisation. Identified robust primary reference materials: Mount Dromedary biotite (99.37 Ma) and Mica‐Fe biotite (307.75 Ma). La Posta biotite and Högsbo muscovite are suitable secondary reference
Hugo K.H. Olierook, Bruno V. Ribeiro, Janne Liebmann, Kai Rankenburg, Fred Jourdan, Ahmad Redaa, Jarred C. Lloyd, Thomas M. Belgrano, Carlos R. Corella Santa Cruz, Yujin Jegal, Julien Mercadier, Catherine Zimmermann, Jie Yu, Andreas Zametzer, Christopher L. Kirkland, Sarah E. Gilbert, Craig D. Storey, Luc S. Doucet, Isabelle Jones, Louisa Stokes, Thomas Zack, Delia Rösel, Denis Fougerouse, Jonas Kaempf, Priyanjan Datta, Hijas Hameed, Noreen J. Evans, Malcolm P. Roberts, Juraj Farkas, Stijn Glorie, Celia Mayers, R. Adam Frew, Sarah Al Odeh, Chloe E. Roche, Massimo Chiaradia, Alicia M. Cruz‐Uribe, Alan S. Collins, Andreas Karlsson, Anusha Shantha Kumara   +38 more
wiley   +1 more source

MINERALOGY OF OXIDATION ZONE OF THE VOROVSKAYA YAMA ANCIENT COPPER MINE (SOUTH TRANSURALS) [PDF]

Минералогия
The article considers the geological setting and mineralogy of oxidation zone of the Vorovskaya Yama copper occurrence (South Transurals), which was exploited in 17th–16th centuries BC by miners of the Alakul culture.
A.M. Yuminov, Sh.Kh. Kuldashev, I.A. Blinov, P.V. Khvorov, K.A. Filippova, M.N. Ankushev, P.S. Ankusheva   +6 more
doaj   +1 more source

The stratigraphy and tectonics of the Rautuvaara iron ore district, northern Finland [PDF]

Bulletin of the Geological Society of Finland, 1976
The sedimentary rocks of the Rautuvaara iron ore district constitute m epicontinental association that, from oldest to youngest, comprises quartzites, quartz-feldspar schists, carbonate and skarn rocks with their associated magnetite mineralisations and ...
A. Hiltunen, M. Tontti
doaj   +1 more source

Corundum Discovered by SuperCam and the Perseverance Rover at Jezero Crater, Mars

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Mars is primarily composed of mafic mineral assemblages and their alteration products, but small, scattered rocks strewn across the landscape offer clues to greater petrological diversity. While traversing the Jezero crater rim, the Perseverance rover encountered several plagioclase‐rich light‐toned float rocks.
A. M. Ollila, O. Beyssac, A. Fau, O. Forni, E. Clavé, P. Beck, C. C. Bedford, V. Payre, E. Dehouck, S. A. Connell, J. A. Manrique, P. Pilleri, O. Gasnault, G. M. Martinez, A. Udry, S. Bernard, P. Gasda, T. Acosta‐Maeda, R. B. Anderson, T. S. J. Gabriel, F. Calef, J. F. Bell III, J. Maki, S. Schröder, C. Quantin‐Nataf, J. R. Johnson, B. Chide, K. Rammelkamp, F. Poulet, C. Royer, M. Rock, N. L. Lanza, S. K. Sharma, G. Lopez‐Reyes, T. Fouchet, J. Comellas, A. Zastrow, E. Cloutis, R. C. Wiens, A. Cousin, S. Maurice, S. Clegg, P. Bernardi, T. Nelson   +43 more
wiley   +1 more source

Structurally‐Controlled Permeability Evolution and Mineralization in Geothermal Caprocks: The Fenice Capanne Mining District (Southern Tuscany, Italy)

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract The Neogene mineralized region of the Colline Metallifere in southern Tuscany (Italy) provides a natural laboratory to investigate feedback between fluid–rock interaction, structurally controlled fluid flow, and hydrothermal ore mineralization.
Barbara Marchesini, Federico Rossetti, Ahmad Rabiee, Andrea Billi, Andrea Cavallo, Davide Novella, Vincenzo Moretto, Antonio Caracausi, Fabio Trippetta, Luca Aldega, Luigi Dallai, Giovanni Ruggieri, Eugenio Carminati   +12 more
wiley   +1 more source

Campiglia Marittima Skarn (Tuscany): A Challenging Example for the Evolution of Skarn-Forming Models

Minerals, 2023
Campiglia Marittima (hereafter Campiglia) has a long record of attracting interest on its ore deposits that have been intermittently exploited from the Copper Age to the late XX century. Since the XIX century, Campiglia has been a key locality for the debate on skarn-forming processes due to the presence of mining activities ensuring access to ever new
Vezzoni S, Rocchi S, Dini A
openaire   +2 more sources