Resumen

Es reglamentaria la utilización de métodos geoestadísticos para la categorización de los recursos y reservas en los yacimientos. Estos exigen el ajuste de los datos a una distribución de probabilidad, si es la normal de Gauss, la aplicación de estos métodos será directa, de lo contrario, deben realizarse transformaciones que pueden afectar la exactitud de los resultados. Actualmente no existe un estudio que corroboré la normalidad en los valores del quimismo, de los yacimientos ubicados al noreste de la provincia Holguín; por lo que se persiguió tipificar el comportamiento probabilístico de las dos variables más utilizadas en los cálculos, el Níquel y el Hierro. Se utilizaron diversas pruebas de bondad de ajuste con la ayuda del software Statgraphics, en tres yacimientos del oriente cubano, Yagrumaje Oeste, Yagrumaje Sur y Yagrumaje Norte, en ocho direcciones horizontales para cada intervalo muestreado. Se demostró que prevalecen los comportamientos anormales.

Palabras clave: Estadística, Geoestadística, Geoquímica, Modelación.

Abstract

Is Regulatory using geostatistical methods for categorizing resources and reserves in the deposits. These require the adjustment of the data to a probability distribution, if the normal Gauss, the application of these methods will be direct, otherwise, changes that may affect the accuracy of the results should be made. Currently there is no study that corroborated the values of chemism of the fields located in the northeast of Holguín conform to normal, so that he sought to define the probabilistic behavior of the two used in the calculations variables, Nickel and Iron . Various tests of goodness of fit with the help of Statgraphics software in three sites in eastern Cuba , Yagrumaje West Yagrumaje Yagrumaje North and South , in eight horizontal directions for each sampling interval were used. It was shown that the behaviors prevail without adjustments to the normal distribution.The use of geostatistics procedure in classifying resources and reserves in orebodies is prescribed by regulations. These require that data are set to probability distribution, if it is the normal Gauss this procedure will be straight, otherwise transformation which can affect results accuracy must be done. Níckel and Iron were the most used variables in calculating the probabilistic behavior. Several test using the Statgraphics software were carried out in Yagrumaje Oeste, Yagrumaje Sur and Yagrumaje Norte orebodies located in the eastern part of Cuba. It is shown that no adjustment to normal distribution behaviors prevailed.

Key words: Statistics, Geostatistics, Geochemistry, Modeling.