Results 61 to 70 of about 1,138 (186)

Morphological, textural and structural features of chromitite deposits of Main ore field of Kempirsay massif (South Urals, Kazakhstan)

Georesursy
In the paper data of morphology, textural and structural features of chromitites from deposits of southeast part of Kempirsay massif (South Urals, Kazakhstan) are summarized. It is showed that formation of unique chromium deposits is closely related with
D. E. Saveliev, D. K. Makatov, V. S. Portnov, R. A. Gataullin   +3 more
doaj   +1 more source

Chemical and Mineralogical Characteristics of the Microscopic-sized Epidotes in the Metamorphic Basement Rocks within the Late Cretaceous Hatip Ophiolitic Melange in Konya Central Southern Turkey

Hittite Journal of Science and Engineering, 2019
A metamorphism in green-schist facies conditions. The epidote crystals is subhedral to eu- hedral, with high Al2O3 26-30 % and low Fe2O3 5–8% contents.
Kerim Kocak, Raziye Merve Kaya
doaj   +1 more source

Magmatic significance and hydrothermal alteration of layered chromitites from the Bracco Gabbro Complex, Ligurian Ophiolites, Italy

Bulletin of the Mineral Research and Exploration
The Bracco chromitites are hosted in the Mesozoic Ligurian Ophiolites (Italy) and provide key insights into the magmatic and post-magmatic (i.e. metamorphic and hydrothermal) evolution ofgabbro-hosted chromitites in an oceanic mantle.
Federica Zaccarini, Raphael J. Baumgartner, Constantinos Mavrogonatos, Giorgio Garuti   +3 more
doaj   +1 more source

Chemical and Thermal Changes in Mg₃Si₂O₅ (OH)₄ Polymorph Minerals and Importance as an Industrial Material

Applied Sciences
Serpentine (Mg3Si2O5(OH)4), like quartz, dolomite and magnesite minerals, is a versatile mineral group characterized by silica and magnesium silicate contents with multiple polymorphic phases.
Ahmet Şaşmaz, Ayşe Didem Kılıç, Nevin Konakçı   +2 more
doaj   +1 more source

PLAGIOGRANITES FROM THE OPHIOLITE COMPLEXES OF DINARIDES AND VARDAR ZONE

Rudarsko-geološko-naftni Zbornik, 2001
Geochemical dana of plagiogranites associated with ophiolite conplexes of Central Dinaride Ophiolite Belt (CDOB) and Vardar Zone Ophiolite Belt (VZOB) are presented.
Vladimir Majer , Vesnica Garašić
doaj  

TAVŞANLI ZONU: ANATOLİD-TORİD BLOKU'NUN DALMA-BATMAYA UĞRAMIŞ KUZEY UCU

Bulletin of the Mineral Research and Exploration, 2011
Tavşanlı Zonu, Anatolid-Torid Bloku'nun kuzey ucunda yer alan ve Kretase'de yüksek basınç-düşük sıcaklık koşullarında metamorfizma geçirmiş kesimini oluşturur. Kuzeyden Izmir-Ankara Kenedi, güneyden Afyon Zonu kayaları tarafından sınırlanan Tavşanlı Zonu
Aral I. OKAY
doaj  

Sulfide mineralization in ultramafic rocks of the Faryab ophiolite complex, southern Kerman

Journal of Economic Geology, 2015
Introduction Worldwide, Ni-Cu and PGE magmatic sulfide deposits are confined to the lower parts of stratiform mafic and ultramafic complexes. However, ophiolite mafic and ultramafic complexes have been rarely explored for sulfide deposits despite the ...
Mohammad Ali Rajabzadeh, Fatemeh Al Sadi
doaj  

Ophiolites of Japan.

Journal of Geography (Chigaku Zasshi), 1989
The Japanese ophiolites are divided into nappe type and melange type by their occurrences. The nappe type formed in a short period (a few 10Ma), and emplaced shortly after its igneous formation keeping its original igneous stratigraphy. They generally escaped from post-emplacement, high-pressure metamorphism. The melange type is a mixture of ophiolitic
openaire   +2 more sources

Geochemistry of mafic extrusive lavas in the Bayankhongor Ophiolite, Mongolia

Mongolian Geoscientist
This study presents new geochemical data on pillow lavas from the Bayankhongor Ophiolite in western Mongolia, revealing compositions that range from sub-alkaline to alkaline basalts.
Bayarmaa Batsukh, Turbold Sukhbaatar, Gerel Ochir, Oyunbold Sukhbaatar, Odgerel Dashdorjgochoo   +4 more
doaj   +1 more source

Tectono-stratigraphy, formation and emplacement ages of the Beyşehir-Hoyran Nappes in the south of the Sultan Dağları (Isparta, SW Türkiye)

Bulletin of the Mineral Research and Exploration
The Beyşehir-Hoyran Nappes (BHN), in the south of Sultan Dağları, consist of ophiolite, mélange and nappe slices of different lithologies and ages belonging to the oceanic crust and related rocks, which originated from the northern Neotethys and were ...
Aynur Hakyemez, Ayhan Ilgar, Ercan Tuncay, Alper Bozkurt, Ali Ergen   +4 more
doaj   +1 more source