Results 121 to 130 of about 7,051 (253)

Petrography and geochemistry of pegmatite and leucogranite of Ntega-Marangara area, Burundi, in relation to rare metal mineralisation

Open Geosciences
The Ntega-Marangara area, part of the Kanyaru supergroup, Western Domain of Karagwe Ankole Belt, hosts numerous pegmatite veins related to the leucogranite. This investigation aims to characterise the granitoids, their alteration products, and rare metal
Akabahinga Quesnay de Jésus, Bolarinwa Anthony Temidayo, Ntiharirizwa Seconde   +2 more
doaj   +1 more source

High‐grade localized metasomatic alteration of the granitic gneiss surrounding a clinopyroxene‐rich pegmatoid dyke: Söndrum stenhuggeriet, Halmstad, SW Sweden

, 2014
Daniel E. Harlov, Alfons van den Kerkhof, Lovisa Johansson   +2 more
openalex   +2 more sources

Metasomatic alteration associated with the formation of subvolcanic rocks of the Abagatuysky complex (Nerchinsk ore region, Eastern Transbaikalia) [PDF]

, 2019
Ivan Kremer, П. А. Тишин
openalex   +1 more source

Oceanic slab melting and mantle metasomatism

, 2001
Modern plate tectonic brings down oceanic crust along subduction zones where it either dehydrates or melts. Those hydrous fluids or melts migrate into the overlying mantle wedge trigerring its melting which produces arc magmas and thus additional ...
Prouteau, Gaëlle, Scaillet, Bruno
core   +1 more source

Timing and evolution of metasomatic alteration and mineralization in the Lyon Mountain Granite and related iron oxide apatite (IOA) ores; constraints from apatite and titanite U-Pb geochronology, Sm-Nd isotopes and trace-elements [PDF]

, 2015
Angela L. Buchanan, Steele-MacInnis, Matthew, Fisher, Christopher M., Hanchar, John M., Crowley, James L., Valley, Peter M., Fedo, Christopher M., Tornos, Fernando, Piccoli, Philip M., Fournelle, John   +9 more
openalex   +1 more source

Petrography and physical-mechanical evaluation of mafic-ultramafic rocks from Atud-Um Khasila, Egypt for dimension stone. [PDF]

Sci Rep
Abdel-Rahman AM, Latif MLA, Khedr MZ, Mohsen SA, Ghoneim MH.   +4 more
europepmc   +1 more source

The mantle source of REE-rich alkaline silicate magmas can be enriched by continent-derived sediment subduction. [PDF]

Nat Commun
Qiu KF, Long ZY, Romer RL, Halama R, Williams-Jones AE, Yu HC, Li SS, Wu MQ, Deng J.   +8 more
europepmc   +1 more source

Minerals of the hydrotalcite group in metasomatically altered carbonate rocks from Zawiercie, S Poland

, 2001
Minerals of hydrotalcite-manasseite group were identified in samples from two borehols in Zawiercie (ZMZ-9, RK-1). The minerals were found in calciphire bodies (RK-1) and in one small, metasomatic veinlet (ZMZ-9) formed in Middle Devonian dolomites.
Koszowska, Ewa, Salata, Dorota
openaire   +1 more source

Petrographic and geochemical evidence from pyrite for the genesis of the Bainiuchang Ag-polymetallic deposit southeastern Yunnan. [PDF]

Sci Rep
Wang T, Liu X, Zhang S, Lu B, Chen S, Meng G, Zhang H, Chen X, Zhou J, Mi X, Shi N, Xiao K.   +11 more
europepmc   +1 more source

Hong Kong is an impact crater: Proof from the geomorphological and geological evidence [PDF]

Hong Kong is a city in southern China. The urban districts of Hong Kong, Kowloon, and Victoria Harbour are situated within Hong Kong. Hong Kong is surrounded by mountains with a diameter of 11 km. Three million people live inside the basin.
Chan, Chu-Lok, Luo, Xiuquan, Wu, Siben
core   +1 more source