Results 21 to 30 of about 8,361 (213)

A chromian tourmaline from Outokumpu, Finland [PDF]

Bulletin of the Geological Society of Finland, 1968
Chromian tourmaline, a member of the dravite group, has been encountered in the Cr-bearing skarns occuring between the serpentinites and quartzites in the Outokumpu area, in association with chrome-bearing silicates ang oxides.
E. Peltola, Y. Vuorelainen, T.A. Häkli
doaj   +1 more source

Carbonatites in skarn objects of the Urals

Литосфера, 2017
The temperature range of the formation of skarns suggests the melting of limestones in the heat-and-mass transfer columns of the Earth’s crust. The ontogenic analysis of structures of the carbonate rocks in some Ural skarn objects indicates the presence ...
V. A. Popov
doaj   +2 more sources

Trace element fractionation in magnetite as a function of Fe depletion from ore fluids at the Baijian Fe-(Co) skarn deposit, eastern China: Implications for Co mineralization in Fe skarns

American Mineralogist
Magnetite is common in various magmatic and hydrothermal ore deposit types, and its trace element geochemistry has become increasingly used in ore genesis studies and mineral exploration.
Guang Wen, Jian-Wei Li, A. Hofstra, Daniel E. Harlov, Xin-Fu Zhao, H. Lowers, Alan E. Koenig   +6 more
semanticscholar   +1 more source

Synkinematic skarns and fluid drainage along detachments: The West Cycladic Detachment System on Serifos Island (Cyclades, Greece) and its related mineralization

, 2017
Back-arc extension in the Aegean Sea has been accommodated by several large-scale detachments such as the West Cycladic Detachment System (WCDS) in the Oligocene and Miocene.
M. Ducoux, Y. Branquet, L. Jolivet, L. Arbaret, B. Grasemann, Aurélien Rabillard, C. Gumiaux, S. Drufin   +7 more
semanticscholar   +1 more source

Petrogenesis and age of skarns associated with felsic and metamafic dykes from the Paraíba do Sul Complex, southern Espírito Santo State

Brazilian Journal of Geology
: This paper concerns the study of petrography, mineral chemistry and geochronology of skarns generated at the contact of marbles of the Paraíba do Sul Complex with felsic and metamafic dykes in the southern Espírito Santo State.
Raissa Beloti de Mesquita, Hanna Jordt-Evangelista, Gláucia Nascimento Queiroga, Edgar Batista de Medeiros Júnior, Ivo Antônio Dussin   +4 more
doaj   +1 more source

Age of the granitic magmatism and the W-Mo mineralization in skarns of the Serido belt (NE Brazil) based on zircon U-Pb (SHRIMP) and molybdenite Re-Os dating

, 2017
Over five hundred W-Mo skarns have been reported in the Neoproterozoic Serido belt in the northeastern Brazil. The origin of these mineralizations has been attributed to metasomatic reactions occuring after the infiltration of hydrothermal fluids that ...
M. H. Hollanda, J. A. Neto, C. Archanjo, H. Stein, A. Maia   +4 more
semanticscholar   +1 more source

Mineral Chemistry Studies on Pyroxenes in Fe Skarns in the West of Elazığ (Turkey); Their Role in the Skarn Mineralization Process

Applied Sciences
This study presents the first detailed investigation of pyroxene zoning within polymetallic skarn zones of the Elazığ region. Skarns develop along contacts between plutonic rocks (diorite and granite) and carbonate rocks, forming two main zones ...
Necla Koprubasi, Ayşe Didem Kiliç, Ahmet Sasmaz   +2 more
doaj   +1 more source

Ti MINERALS IN ORES AND SKARNS OF THE AKTASH MAGNETITE-POLYMETALLIC DEPOSIT, WESTERN KARAMAZAR, TAJIKISTAN [PDF]

Минералогия
The article characterizes Ti minerals from different mineral assemblages of the Aktash magnetite-polymetallic deposit (Western Karamazar, Northern Tajikistan).
U.A. Yatimov, I.A. Blinov, M.A. Rassomakhin, S.M. Lebedeva, N.S. Safaraliev   +4 more
doaj   +1 more source

Peculiarities of distribution and composition of betafite from different formations of the Aldan shield (Sakha-Yakutia)

Вісник Київського національного університету імені Тараса Шевченка. Серія Геологія, 2019
Character of Nb and Ta distribution in the different geological formations of the Aldan Shield are given in this article. To get idea about betafite from different endogenic etalon formations the authors analyzed its well known locations in the ...
V. Guliy, І. Poberezhska
doaj   +1 more source

Geochemical and Geological Investigation of Skarn‐Type Pb–Zn Mineralization in Hastanetepe (Balya‐Balıkesir, Türkiye): An Approach Based on Fluid Inclusions, Sulphur Isotopes and Geochemical Data

Geological Journal, EarlyView.
Integrated petrographic, mineralogical and geochemical data from the Hastanetepe Pb–Zn deposit (Balya, Türkiye) reveal multi‐stage hydrothermal alteration and a magmatic sulphur source. Fluid inclusion and sulphur isotope results indicate a complex fluid evolution responsible for skarn‐type Pb–Zn mineralization along limestone–dacite contacts ...
Esra Ünal‐Çakır
wiley   +1 more source