Analysis and Estimation of Multi-unit Deposits: Application to a Porphyry Copper Deposit

This work concerns mineral deposits consisting of geological bodies whose metal grades have different characteristics in terms of distribution and variogram, which means that estimating grades by ordinary kriging may produce unrealistic spatial continuity. This paper proposes a method based on the i...

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Bibliographic Details
Published in:Mathematical geosciences 2013-11, Vol.45 (8), p.927-947
Main Author: Seguret, Serge Antoine
Format: Article
Language:English
Subjects:
Applications
Chemistry and Earth Sciences
Computer Science
Continuity
Copper
COPPER RESOURCES
DEPOSITION
Deposits
Earth and Environmental Science
Earth Sciences
Environmental Sciences
Estimating techniques
Geology
Geophysics
Geotechnical Engineering & Applied Earth Sciences
Global Changes
Hydrogeology
Indicators
MATHEMATICAL ANALYSIS
Mathematical models
MINERAL DEPOSITS
Minerals
Physics
Porphyry copper
PORPHYRY ORES
Sciences of the Universe
Special Issue
Statistics
Statistics for Engineering
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Summary:This work concerns mineral deposits consisting of geological bodies whose metal grades have different characteristics in terms of distribution and variogram, which means that estimating grades by ordinary kriging may produce unrealistic spatial continuity. This paper proposes a method based on the indicators of the geological objects (hereafter called units) and their product with the metal grade. This is illustrated by an application to a porphyry copper deposit. The aim of this paper is essentially to promote the use of variogram ratios to analyze and characterize deposits.
ISSN:1874-8961
1874-8953
DOI:10.1007/s11004-013-9475-0