Abstract
The location of gold veins, due to a slanting magma dike intrusion in a cold rock, considering earth surface effects is determined. The 400°C and 500°C isotherm evolution resulting from this magma intrusion are studied considering a 2-D model. In this analysis, it is shown that the isotherm envelopes are the most important surfaces. Analytic solutions have been found as a function of the angle a between the dike and the vertical planes. The present results are more general than previous ones in the contest of vertical dikes. Magma convection has been considered in a simplified way. The agreement found that the results in the work the actual vein sites at the gold mine, called Colombia, in the auriferous area of El Callao, located 180 Km south of Ciudad Guayana in Bolivar state, Venezuela, are much better than in previous works.
Highlights
Intrusion related gold systems is a term that reflects a tendency common to all magmatic hydrothermal environments to form gold ores in spatial associations with intrusive centres
How to cite this paper: Martin, P., Maass, F., Puerta, J. and Cortes, L. (2016) Gold Veins Location in Deposits Originated by a Slanting Magma Intrusion Dike
Previous treatments considering 2-D boundary conditions were performed considering that the magma dike was vertical
Summary
Intrusion related gold systems is a term that reflects a tendency common to all magmatic hydrothermal environments to form gold ores in spatial associations with intrusive centres. It is left open that anyone interested in the application of our analysis to other mines, could study the ample group of examples of the above referred references As it was pointed out in a previous paper [2], most of the analysis of gold veins and temperature calculations in and around intrusive dikes were performed at the beginning considering vertical walls and magma heat propagating in the direction normal to the plane of separation between magma and rock [3] [4]. The mathematical analysis can be considered as 1-D diffusion problem This kind of treatment does not give results according with actual location of the gold veins in the deposits, and there was no interest for a theoretical treatment of dike intrusion-related gold systems. The agreement of the new theoretical results and the actual gold veins in Colombia mines is better
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