Multi-collocated cokriging: An application to grade estimation in the mining industry

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Geostatistical modeling of cross-correlated variables in deposits is of paramount importance for mineral resource evaluation. The resulting constructed block model is expected to re-establish this correlation among the variables. Independent estimation, however, may be inadequate as the data correlation is not taken into account precisely. To tackle this problem, cokriging approach can be used. Nevertheless, cokriging system may be unstable when dealing with numerous amount of sample points. Reducing the size of cokriging system can be introduced as a choice, to circumvent this difficulty, by considering a sub-set of data. Multi-collocated cokriging in this respect, as an offshoot of collocated cokriging approach provides much trustworthy results. In this study, three search-ing strategies are selected to estimate the gold grade in a deposit. The results showed that Multi-collocated cokriging in the case of moving neighborhood bear resemblance to Multi-collocated kriging in the case of unique neighborhood.

Original languageEnglish
Title of host publicationMining Goes Digital - Proceedings of the 39th international symposium on Application of Computers and Operations Research in the Mineral Industry, APCOM 2019
EditorsChristoph Mueller, Winfred Assibey-Bonsu, Ernest Baafi, Christoph Dauber, Chris Doran, Marek Jerzy Jaszczuk, Oleg Nagovitsyn
PublisherCRC Press/Balkema
Pages158-167
Number of pages10
ISBN (Print)9780367336042
DOIs
Publication statusPublished - Jan 1 2019
Event39th International symposium on Application of Computers and Operations Research in the Mineral Industry, APCOM 2019 - Wrocław, Poland
Duration: Jun 4 2019Jun 6 2019

Publication series

NameMining Goes Digital - Proceedings of the 39th international symposium on Application of Computers and Operations Research in the Mineral Industry, APCOM 2019

Conference

Conference39th International symposium on Application of Computers and Operations Research in the Mineral Industry, APCOM 2019
Country/TerritoryPoland
CityWrocław
Period6/4/196/6/19

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Computer Science Applications

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