Results 31 to 40 of about 13,572 (229)

Petrogenesis of the Khaku pegmatites corundum-bearing in the margin of Alvand granite complex, and its comparison with important worldwide ruby and sapphire deposits

Journal of Economic Geology, 2022
Blue-colored corundum (sapphire) is found in syenitic pegmatites in Alvand igneous complex in the Khako area. From the petrographic point of view, the host rock is composed of feldspar and small amounts of quartz, which includes corundum crystals of ...
Hadis Sadeghi, Shahryar Mahmoudi, Mohammad Reza Jafari , Mohammad Ali Arian   +3 more
doaj   +1 more source

Geochronology (Re–Os and U–Pb) and fluid inclusion studies of molybdenite mineralisation associated with the Shap, Skiddaw and Weardale granites, UK [PDF]

, 2008
Late Devonian magmatism in Northern England records key events associated with the Acadian phase of the Caledonian-Appalachian Orogen (C-AO). Zircon U-Pb and molybdenite Re-Os geochronology date emplacement and mineralisation in the Shap (405·2±1·8 Ma ...
Conliffe, J., Crowley, Q.G., Feely, M., Selby, D.   +3 more
core   +1 more source

Age and petrogenesis of the beryl-bearing granitic magmatism of the Velasco Pegmatite District, Pampeana Province, NW Argentina

Brazilian Journal of Geology, 2021
Two porphyritic granitoids (Huaco and Sanagasta) in the Velasco district of the Pampeana Pegmatite Province in Northwestern Argentina are recognized. They are considered the fertile granites of the beryl-bearing pegmatites and can be described as post ...
Fernando Guillermo Sardi, Silvana Marangone, José Manuel Fuenlabrada   +2 more
doaj   +1 more source

Metamorphic and metasomatic evolution of the Western Domain of the Karagwe-Ankole Belt (Central Africa) [PDF]

, 2020
The tectonometamorphic evolution of the Western Domain of the Karagwe-Ankole Belt, containing widespread granite-related W-Nb-Ta-Sn mineralization in pegmatites and hydrothermal quartz veins of Early Neoproterozoic age, is largely unknown.
Dewaele, Stijn, Hulsbosch, Niels, Muchez, Philippe, Van Daele, Johanna   +3 more
core   +1 more source

Pegmatite and Fault Spatial Distribution Patterns in Kalba-Narym Zone, East Kazakhstan: Integrated Field Observation, GIS, and Remote Sensing Analysis

Geosciences
This study is an attempt to compile and complete structural features of the Kalba-Narym Zone in East Kazakhstan belonging to the western Central Asian Orogenic Belt, which is known to be well-endowed with the occurrence of pegmatite rare-metal ...
Azam Soltani Dehnavi, Syed Muzyan Shahzad, Piotr Skrzypacz, Fereshteh Shabani-Sefiddashti   +3 more
doaj   +1 more source

Evaluation of Saudi pegmatite and its use in porcelain industry [PDF]

Processing and Application of Ceramics, 2012
Pegmatite is the main source of feldspar for ceramics industry. Usage of pegmatite in ceramic industry causes some problems due to the presence of mica and iron oxides.
Hassan M.H. Al-Marzouki, Christopher Jeffery, Gamal A. Khater   +2 more
doaj  

Mapeamento geológico do Pegmatito Alto do Tibiri: aspectos estruturais e mineralógicos

Revista Principia, 2017
The Alto Tibiri is a pegmatite body located in the southern region of the Rio Grande do Norte, in Parelhas city, geologically inserted in the Borborema Pegmatite Province and occur intruding the mica schists of the Seridó Formation.
Paulo Jedean da Silva Araújo, Vinicius Anselmo Carvalho Lisboa, José Ramilson dos Santos Oliveira   +2 more
doaj   +1 more source

Detecting Lithium (Li) Mineralizations from Space: Current Research and Future Perspectives

Applied Sciences, 2020
Optical and thermal remote sensing data have been an important tool in geological exploration for certain deposit types. However, the present economic and technological advances demand the adaptation of the remote sensing data and image processing ...
Joana Cardoso-Fernandes, Ana C. Teodoro, Alexandre Lima, Mônica Perrotta, Encarnación Roda-Robles   +4 more
doaj   +1 more source

Prospecting of rare metals in the East-Ukrainian pegmatitе province – important part of geological exploration in Ukraine

Мінеральні ресурси України, 2021
Nowadays, there has significantly increased the interest of industry in rare metal mineralization in pegmatites, which determines their importance as raw materials for “critical elements” Ta, Nb, Li, Be, Sn, Y, TR, etc., and thus there is a need to re ...
V. V. Sukach, L. V. Isakov, V. P. Bezvynnyi, V. O. Shpylchak   +3 more
doaj   +1 more source

The genesis of LCT-type granitic pegmatites, as illustrated by lithium isotopes in micas [PDF]

, 2015
International audienceIsotopic compositions in the Monts d’Ambazac Pegmatite Field (French Massif Central) exhibit a narrow range of mica δ7Li values, ranging from -3.6 to + 3.4‰.
Deveaud, Sarah, Millot, Romain, Villaros, Arnaud   +2 more
core   +3 more sources