Results 111 to 120 of about 7,051 (253)

Multitemporal and geobotanical approach in the remote detection of Greisenization areas in the Serra da Pedra Branca Granite, Goias State, Brazil [PDF]

A multiseasonal analysis of LANDSAT multispectral images in CCT format permitted the mapping of lithologic facies in the Pedra Branca Granite, using geobotanical associations, which occur in the form of variations in the density of the cerrado vegetation,
Filho, R. A., Parada, N. D. J.
core   +1 more source

Two-Stage, Extreme Albitization of A-type Granites from Rajasthan, NW India [PDF]

, 2017
Albitization is a common process during which hydrothermal fluids convert plagioclase and/or K-feldspar into nearly pure albite; however, its specific mechanism in granitoids is not well understood. The c.
Baumgartner, Lukas P., Chaudhri, Naveen, Hofmann, Albrecht W., Kaur, Parampreet, Okrusch, Martin, Raczek, Ingrid, Skora, Susanne   +6 more
core  

The common origin and alteration history of the hypabyssal and volcanic phases of the Wadi Tarr albitite complex, southern Sinai, Egypt [PDF]

, 2019
New data and interpretations are presented for the igneous albitites of the Wadi Tarr area, southern Sinai, Egypt. The albitite masses are isolated in outcrop from any granitic intrusions and have intrusive contacts against the country rocks without any ...
Al-Kahtany, Khaled M., Asimow, Paul D., Azer, Mokhles K., Gahlan, Hisham A.   +3 more
core  

"Remobilization of Ni–Co–As and platinum-group elements by carbonate metasomatic alteration (listvenitization) of metaultramafic rocks from Dobšiná, Slovakia"

, 2023
Stefan Kiefer, Peter Ivan, A. Kaufmann, Marek Vďačný, Juraj Majzlan   +4 more
openalex   +1 more source

Discovery of a New Cl-Rich Silicate Mineral, Ca_(12)(Al_2Mg_3Si_7)O_(32)Cl_6: An Alteration Phase in Allende [PDF]

, 2014
During a nanomineralogy investigation of the Allende CV3 carbonaceous chondrite, a new silicate mineral, Ca_(12)(Al_4Mg_3Si_7)O_(32)Cl_6 with the I 4 3d wadalite structure, was identified in the Type B1 Ca-Al-rich inclusion (CAI) Egg-3.
Krot, Alexander N., Ma, Chi
core  

Geochemistry, Paragenesis, and Wall-Rock Alteration of the Qatruyeh Iron Deposits, Southwest of Iran: Implications for a Hydrothermal-Metasomatic Genetic Model

, 2014
Sina Asadi, Mohammad Ali Rajabzadeh
openalex   +1 more source

Mineralization Styles and Alteration Paragenesis of Metasomatic Zones in the Highly Fractionated Granite of Gabal Gattar, Northern Eastern Desert, Egypt

, 2023
Abd El‐Galil E. Amr, Abdel Aty, Amr Abdel Hamid, Hicham Abdel Hamid, Seddik Seddik, Mohamed A. Metwally, Mohamed Metwally, M Akaad, A Noweir, M Akaad, A Noweir, C Burnham, Z Chen, Q Guo, Y Dawood, N Eglizaud, F Miserque, E Simoni, A El Kammar, A Salman, M Shalaby, A Mahdy, D El Kholy, M El Husseiny, W Saleh, M Zalaky, D El Kholy, H Khamis, H Sundoly, M El Rakaiby, M Shalaby, N, H El Sundoly, A Waheeb, F Seimbille, P Zuddas, M Gil, H Holail, A Moghazi, G Hough, S Swapp, C Frost, A Khazback, M Shalaby, M Raslan, D Langmuir, W Liu, X Zhao, Q Shi, M Mahdy, A Salman, A Mahmoud, N Mahdy, M Shalaby, H Helmy, A Osman, E El Sawey, E Abu Zeid, N Mahdy, B El Kalioubi, C Wohlgemuth-Ueberwasser, M Shalaby, A Afandy, M Raslan, T Sayyah, M Attawiya, H Shahin, M Shalaby, M Shalaby, L Yue, Y Jiao, L Wu   +71 more
openalex   +1 more source

Evolution and economic significance of listwaenites associated with Neoproterozoic ophiolites in South Eastern Desert, Egypt

Geologica Acta, 2013
Most South Eastern Desert ophiolites are found along the Allaqi-Heiani-Gerf suture along the Egypt-Sudan border. Serpentinites, altered slices of upper mantle, are the main components of this suture and other sutures in the Arabian-Nubian Shield ...
M.K. AZER
doaj  

An occurence of metasomatic aujminosilicates related to high alumina hydrothermal alteration within the South Mountain Batholith, Nova Scotia

, 1988
M. C. Corey
openalex   +2 more sources

Metacarbonate rocks of the Paleoproterozoic Khapchan series (southeastern part of the Anabar Shield): mineral and chemical composition, metamorphic conditions

Записки Горного института
The mineral composition of metacarbonate rocks (silicate marbles and carbonate-silicate rocks) of the Khapchan series (southeastern part of the Anabar Shield) was studied, and the PT (pressure and temperature)-parameters of their formation were ...
Ekaterina Yu. Akimova, Nikolai I. Gusev, Aleksandr D. Savelev, Daniil R. Donchenko   +3 more
doaj