Results 101 to 110 of about 13,752 (229)

The Nature of Cima Dome [PDF]

, 1954
In the Mojave Desert of southeasternmost California is a remarkably smooth, symmetrical rock-alluvial dome which takes its name from Cima on the Union Pacific Railroad. Lawson (1915, pp.
Sharp, Robert P.
core  

Origin of the Azubai Be-mineralized pegmatites, Xinjiang Altay: constraints from Li–Hf isotopes

Open Geosciences
The genetic mechanism of rare-metal pegmatites – whether they form primarily by extreme fractionation of granitic magmas or direct crustal anatexis – remains highly controversial.
Ma Zhanlong, Hai Lianfu, Zhao Shaoqing
doaj   +1 more source

Fluorapatite from a Pegmatite with Miarolitic Cavities in the Larsemann Hills, East Antarctica: ID-TIMS U-Pb Ages and LA-ICP-MS Trace-Element Constraints on the Late Pan-African Orogenic Evolution

Geosciences
Pegmatites with miarolitic cavities have not previously been reported from the Larsemann Hills, East Antarctica, and their age and origin remain poorly constrained.
Ivan A. Babenko, Nailya G. Rizvanova, Sergey G. Skublov, Yuri A. Bishaev, Irina V. Talovina, Olga L. Galankina, Alexander V. Kuznetsov   +6 more
doaj   +1 more source

Conservation of the european mining and metallurgical heritage. Part 2

, 2000
In the June 1999 issue of the CIM Bulletin an inventory of Mining Museums Across Canada was published. Because museums are an important educational tool and a touristic attraction, it is a pleasure to have professors Octavio Puche Riart and Luis Felipe ...
Mazadiego Martínez, Luis Felipe, Puche Riart, Octavio   +1 more
core  

Geochemistry of granitic aplite-pegmatite veins and sills and their minerals from Cabeço dos Poupos, Sabugal, central Portugal [PDF]

, 2011
Comunicação apresentada ao V International Symposium on Granitic Pegmatites : PEG 2011, Mendoza, Argentina, 20-27 Fev ...
Neiva, A.M.R., Ramos, João Farinha, Silva, Paulo Bravo   +2 more
core  

Magmatic evolution of topaz-bearing granite stocks within the Wiborg rapakivi granite batholith [PDF]

, 2007
This study brings new insights into the magmatic evolution of natural F-enriched peraluminous granitic systems. The Artjärvi, Sääskjärvi and Kymi granite stocks within the 1.64 Ga Wiborg rapakivi granite batholith have been investigated by petrographic ...
Lukkari, Sari
core  

Natural Radioactivity Assessment and Radiation Hazards of Pegmatite as a Building Material, Hafafit Area, Southeastern Desert, Egypt. [PDF]

Toxics, 2022
Adel EH, Taha SH, Ebyan OA, Rashed WM, El-Feky MG, Alqahtani MS, Korany KA, Hanfi MY.   +7 more
europepmc   +1 more source

Spatial–Spectral Mamba Model Integrating Topographic Information for Pegmatite Dike Segmentation in Deeply Incised Terrain

Remote Sensing
Lithium is a rare metal widely used in the renewable energy industry. The Altyn region in Xinjiang, China, contains abundant granitic pegmatite-type lithium resources; however, the deeply incised and complex terrain limits the accuracy of conventional ...
Jianpeng Jing, Nannan Zhang, Hongzhong Guan, Hao Zhang, Li Chen, Jinyu Chang, Jintao Tao, Yanqiang Yao, Shibin Liao   +8 more
doaj   +1 more source

Partial melting of amphibolite to trondhjemite near Ykutat, Alaska [PDF]

At Nunatak Fiord, 55 km NE of Yakutat, Alaska, a uniform layer of Cretaceous metabasalt approximately 3 km thick was metamorphosed to amphibolite facies and locally partially melted to trondhjemite pegmatite.
Barker, F.
core   +1 more source

Phosphate sequence study of Boqueirâo pegmatite (Rio Grande Do Norte State, Brazil) [PDF]

, 2015
The Boqueirão pegmatite is located in the Borborema Pegmatite Province in the state of Rio Grande do Norte (NE Brazil) hosted by Neoproterozoic taconglomerates of Equador Formation.
Amores Casals, Sandra, Brito Barreto, Sandra de, Espallargas, Ruben, Fontan, François, Melgarejo i Draper, Joan-Carles   +4 more
core