A geostatistical study of the Manhattan gold deposit

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Authors

Van Brunt, Bruce H.

Issue Date

1989

Type

Thesis

Language

en_US

Keywords

Geostatistical Reserve Estimation Techniques , Distribution Function , Parametric Technique , Lognormal Kriging , Non-parametric Technique , Probability Kriging , Manhattan Gold Deposit , Manhattan, Nevada , Bulk Mining , Heap Leaching , Mill Ore , Pods , Exploration Drilling Grid , Probabilistic Method , Average Grades , Cutoff Grades , Mackay Theses and Dissertations Grant Collection

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Abstract

Geostatistical reserve estimation techniques are divided between those which assume an underlying distribution function for the data and those that do not. This thesis applies a parametric technique, Lognormal Kriging, and a non-parametric technique, Probability Kriging, to the structurally controlled Manhattan gold deposit located in Manhattan, Nevada. The average grade of the deposit is suitable for bulk mining and heap leaching, however, substantial portions of the deposit are high grade mill ore. These high grade pods are small in size relative to the dimensions of the exploration drilling grid. Therefore, interpretation of the exploration data by other than a probabilistic method will give no indication of the presence of a high grade pod other than the average grade of a block. Probability kriging estimates a distribution function for each estimated block. The estimated distribution may be used to determine average grades and tonnages of blocks above specified cutoff grades.

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Online access for this thesis was created in part with support from the Institute of Museum and Library Services (IMLS) administered by the Nevada State Library, Archives and Public Records through the Library Services and Technology Act (LSTA). To obtain a high quality image or document please contact the DeLaMare Library at https://unr.libanswers.com/ or call: 775-784-6945.

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University of Nevada, Reno

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In Copyright(All Rights Reserved)

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