Results 101 to 110 of about 13,572 (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.
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Geology of the Transverse Range Province, Southern California [PDF]

, 1954
The Transverse Range province of southern California is an elongate geomorphic and structural unit that trends essentially east-west across parts of Santa Barbara, Ventura, Los Angeles, San Bernardino, and Riverside Counties (pl. 4).
Bailey, Thomas L., Jahns, Richard H.
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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
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Geology and mineral deposits of the Julian District, San Diego County, California [PDF]

, 1934
The Julian region, in the central part of San Diego County, California, includes the Julian, Banner, several other less important mining districts, and the Stonewall Mine on the Cuyamaca land grant.
Donnelly, Maurice
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Evaluation of laboratory methodologies for froth flotation of feldspar and kaolin [PDF]

, 1994
This report describes work carried out to establish and evaluate methodologies for the laboratory froth flotation of feldspar and kaolin. One of the main aims was to ascertain the feasibility of separating glass-grade feldspar from granite quarry dust ...
Mitchell, C.J.
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Sequence of crystallisation of pegmatites: the Angola case [PDF]

, 2016
The Precambrian basement of Angola contains several pegmatite fields, although most of them have not been studied yet. Some of them include pegmatites devoid of rare elements, as those found close to Caxito, about 100 km ENE Luanda.
Alfonso Abella, María Pura, Gonçalves, Antonio Olimpio, Melgarejo i Draper, Joan-Carles   +2 more
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Contributions to pegmatite exploration within granitic plutons in Central and Northern Portugal [PDF]

, 2013
Exploration programs for granitic pegmatites face the lack of detectable contrasts, either geophysical or geochemical, between pegmatites and their granitic host-rocks. The known productive sectors bearing pegmatites located inside granitic plutons, with
Azevedo, J., Carvalho, José, Dias, P. A., Gomes, C. Leal, Oliveira, J., Pereira, B.   +5 more
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The Borborema Pegmatite Province, NE-Brazil revisited [PDF]

, 2015
Considering the internal structure, mineralogical distribution and geochemical data on K-feldspar, white micas, Nb-Taoxides, tourmalines, garnet and spinel, it becomes clear that the pegmatites classified as "heterogeneous" (Johnston 1945) include ...
Barreto, S., Beurlen, H., Da Silva, Marcelo R.R., Martin, R., Melgarejo i Draper, Joan-Carles, Souza Neto, J. A.   +5 more
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