PALAVRAS EM INGLÊS RELACIONADAS COM «PROPYLITIZATION»
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10 LIVROS EM INGLÊS RELACIONADOS COM «PROPYLITIZATION»
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propylitization na seguinte seleção bibliográfica. Livros relacionados com
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1
Search for Uranium in the United States
The chlorite and associated sericite are evidently products of a propylitization-
type of rock alteration that preceded the introduction of uranium. Gneiss
fragments in the carbonate breccia underlying the chlorite-bearing gneiss contain
no ...
Vincent Ellis McKelvey,
1955
2
Fractures, Fluid Flow and Mineralization
These veinlets, which are sometimes cross-cut by Type II veins, appear to be
related to the propylitization of the volcanic sequence. The calcite ± pyrite ±
sphalerite assemblage occurs along millimetre thick veinlets, mostly in the upper
part of ...
Ken McCaffrey, Lidia Lonergan, Jamie Wilkinson,
1999
3
Geological Survey Professional Paper
percent of the CaFeSi206 molecule, according to Win- chell (1933, p. 226).
IGNEOUS BOCKS The principal types of alteration affecting the igneous rocks of
the area have been propylitization and seri- citization ; additional minor
processes ...
4
Geological Survey Professional Paper
METAMORPHISM WITHIN THE IGNEOUS ROCKS There have been four chief
varieties of alteration of the igneous rocks of the Stockton and Fairfield
quadrangles. These are propylitization, sericitization, silicification, and
zeolitization.
Geological Survey (U.S.),
1932
5
United States Geological Survey Professional Paper
The first process in the formation of the ore is thought to have been propylitization
of the hornblende gneiss. This resulted in the partial conversion of hornblende to
chlorite and some sericitization of plagioclase. The sulfide ion concentration of ...
6
Geological Survey Bulletin
Propylitization of both the intrusive rocks and the layered volcanic rocks was
common throughout the district. The intensity of propylitization was extremely
variable, but in general it increased toward the main area of disseminated sulfide
...
7
Economic Geology: Principles and Practice
Propylitization, for example, typically affects andesite and diorite, listwaenitization
ultramafic rocks and dolomitization limestone. The names given to alteration
types are mainly derived from the most noticeable newly formed mineral, but
some ...
8
Geology and Ore Deposits of the Stockton and Fairfield ...
METAMORPHISM WITHIN THE IGNEOUS ROCKS There have been four chief
varieties of alteration of the igneous rocks of the Stockton and Fairfield
quadrangles. These are propylitization, sericitization, silicification, and
zeolitization.
9
Base-metal Deposits of the Cordillera Negra, Departamento de ...
Alteration of igneous rocks may be divided into four processes: propylitization,
sericitization, argillitization, and silicification. Propy- litization may have in part
preceded mineralization (p. 23). Pyroxenes, amphiboles, and related dark
minerals ...
Alfred John Bodenlos, John A. Straczek,
1957
10
Uranium Deposits of the World: Asia
Principal Host Rock Alterations Principal alterations associated with structurally
controlled U deposits include propylitization, beresitization, and argilliza- tion.
Propylitization is reflected by calcite and chlorite after muscovite and biotite; ...