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Origin of Crystalline Quartz Veins
International Geology Review, 1962Crystalline quartz veins occupy a position intermediate between hydrothermal and Alpine veins. Genetically, they are related to granitic massifs but their main content was derived from the wall rocks. Their intermediate position is demonstrated by their composition, structure, morphology, and occurrence.
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Ribbon structure in gold- quartz veins
Economic Geology, 1949The following conclusions result from field and laboratory studies of meso- and hypothermal vein matter in many widely separated districts: Quartz can replace country rock, whether directly or through the intermediary of carbonate, but in aluminous rocks such replacement does not normally extend far from the channelways in which solutions flow.
Hugh Exton McKinstry +1 more
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Quartz veins and devolatilization during metamorphism
Journal of the Geological Society, 1983Fluid inclusion studies indicate that quartz veins represent pathways of rapid fluid movement in the Connemara Schists, where fluids have passed through contrasting lithologies without re-equilibrating. This suggests that fluid flow over distances of tens of metres must have occurred within a matter of hours.
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Quartz fabrics in an epithermal ore vein
Contributions to Mineralogy and Petrology, 1973Quartz fabrics have been studied in an epithermal type of gold-silver quartz vein. Several different patterns of fabric diagram are discriminated, each of which corresponds to a phase in the stepwise development of the mineralization of the ore deposit.
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Stress configurations in conjugate quartz-vein arrays
Journal of Structural Geology, 1983Abstract Arrays of quartz gash-veins in small angle (40°), conjugate shear zones (type 1 arrays of Beach) are well-developed in the Upper Devonian Merrimbula sandstone of the south coast region of New South Wales, Australia. We argue that vein and cleavage geometry support an origin of the veins as tension fractures in a rotated secondary stress ...
M.J. Rickard, L.K. Rixon
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Possibilities of seismoelectric methods in search for quartz veins
International Geology Review, 1965An analysis of the resistivity and seismic data for a quartz vein intruded into metamorphosed sediments reveals that the vein cannot be located uniquely on the basis of either resistivity or elastic wave propagation data. The piezoelectric field generated by pressure waves which are propagated through the quartz, however, gives a sharp voltage maximum ...
Z.V. Mazanova +2 more
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RECRYSTALLIZATION DURING THE FORMATION OF CRYSTALLINE QUARTZ VEINS
International Geology Review, 1961Recrystallization plays a large part at all stages of formation of different quartz veins, particularly crystalline ones. The veins contained in quartzites and other monomineral quartz rocks commonly originate from recrystallization when solutions infiltrate tectonically disrupted zones. In other cases, massive quartz veins have recrystallized with the
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Characteristic Features of California Gold-Quartz Veins
Geological Society of America Bulletin, 1894Introduction. The gold-quartz veins of California, in spite of many local variations, form a remarkably well defined type of mineral deposits, the salient characteristics of which it is intended to portray in this paper. The results, indicated in brief outlines, have been obtained during general and detailed mapping for the United States Geological ...
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