Results 21 to 30 of about 10,830 (246)

Garnet Geochemistry of Pertek Skarns (Tunceli, Turkey) and U-Pb Age Findings

Minerals
The Fe skarn and vein-type Cu mineralization types are common in the Eastern Taurus Mountains. This study aims to determine the U-Pb geochronology of garnets of varying sizes within the skarn zone developed at the quartz diorite–marble contact zone in ...
Ayşe Didem Kılıç, Nevin Konakci, Ahmet Şaşmaz   +2 more
semanticscholar   +1 more source

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

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

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

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

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

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

Twenty new species of Hieracium sect. Tridentata and H. sect. Foliosa (Asteraceae) from Sweden

Nordic Journal of Botany, EarlyView.
Nineteen new, presumably apomictic species of Hieracium sect. Tridentata, namely Hieracium anisodontum, H. bicoloriceps, H. disparifolium, H. ditrichum, H. erectifolium, H. ferox , H. lapsanae, H. luteoviride, H. megaplicatum, H. multifolium, H. paer‐haraldii, H. perpendiculum, H. phaeochlorum, H. prasiniceps, H. semirigidum, H.
Tommy Nilsson, Torbjörn Tyler
wiley   +1 more source

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

Geoarchaeological Perspectives on Stelae Production Throughout the Bronze Age: Provenance, Material Properties and Rock Selection at Zebros (Idanha‐a‐Nova, Portugal)

Geoarchaeology, Volume 40, Issue 6, November/December 2025.
ABSTRACT At Monte dos Zebros (Idanha‐a‐Nova, Central Portugal), the discovery of three stelae—two Iberian Late Bronze Age stelae and one fragment of an Early/Middle Bronze Age anthropomorphic stela—represents a rare case of rock art monuments from different chronologies coexisting in the same place within a broader archaeological landscape, which ...
Rafael Ferreiro Mählmann, Ralph Araque Gonzalez, Dirk Scheuvens, Pedro Baptista, Francisco Henriques   +4 more
wiley   +1 more source