Consequences of fractal grade distribution for bulk sorting of a copper porphyry deposit

Peter Coghill; David Miljak; Elizabeth Williams

doi:10.1016/j.gsf.2014.09.003

Consequences of fractal grade distribution for bulk sorting of a copper porphyry deposit

Peter Coghill^*, David Miljak, Elizabeth Williams

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Abstract We show the presence of fractal ordering of copper grade in bore core data at short range in the Cadia Ridgeway porphyry deposit and measure its persistence after mining by monitoring the output of the mine every 20 s for a month using a large scale, zero field magnetic resonance sensor. A simple model is used to investigate this connection and its consequences for sorting of the ore. Fractal distributions, and their associated power laws, have two features highly favourable for segregating ore: a large proportion of low-grade pods and the large scale spatial clustering of grade.

Original language	English
Article number	325
Pages (from-to)	477-480
Number of pages	4
Journal	Geoscience Frontiers
Volume	6
Issue number	4
DOIs	https://doi.org/10.1016/j.gsf.2014.09.003
Publication status	Published - 1 Jul 2015
Externally published	Yes

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10.1016/j.gsf.2014.09.003

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title = "Consequences of fractal grade distribution for bulk sorting of a copper porphyry deposit",

abstract = "Abstract We show the presence of fractal ordering of copper grade in bore core data at short range in the Cadia Ridgeway porphyry deposit and measure its persistence after mining by monitoring the output of the mine every 20 s for a month using a large scale, zero field magnetic resonance sensor. A simple model is used to investigate this connection and its consequences for sorting of the ore. Fractal distributions, and their associated power laws, have two features highly favourable for segregating ore: a large proportion of low-grade pods and the large scale spatial clustering of grade.",

keywords = "Copper, Fractal, Magnetic resonance, Porphyry",

author = "Peter Coghill and David Miljak and Elizabeth Williams",

note = "Publisher Copyright: {\textcopyright} 2014 China University of Geosciences (Beijing) and Peking University.",

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doi = "10.1016/j.gsf.2014.09.003",

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T1 - Consequences of fractal grade distribution for bulk sorting of a copper porphyry deposit

AU - Coghill, Peter

AU - Miljak, David

AU - Williams, Elizabeth

PY - 2015/7/1

Y1 - 2015/7/1

N2 - Abstract We show the presence of fractal ordering of copper grade in bore core data at short range in the Cadia Ridgeway porphyry deposit and measure its persistence after mining by monitoring the output of the mine every 20 s for a month using a large scale, zero field magnetic resonance sensor. A simple model is used to investigate this connection and its consequences for sorting of the ore. Fractal distributions, and their associated power laws, have two features highly favourable for segregating ore: a large proportion of low-grade pods and the large scale spatial clustering of grade.

AB - Abstract We show the presence of fractal ordering of copper grade in bore core data at short range in the Cadia Ridgeway porphyry deposit and measure its persistence after mining by monitoring the output of the mine every 20 s for a month using a large scale, zero field magnetic resonance sensor. A simple model is used to investigate this connection and its consequences for sorting of the ore. Fractal distributions, and their associated power laws, have two features highly favourable for segregating ore: a large proportion of low-grade pods and the large scale spatial clustering of grade.

KW - Copper

KW - Fractal

KW - Magnetic resonance

KW - Porphyry

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DO - 10.1016/j.gsf.2014.09.003

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EP - 480

JO - Geoscience Frontiers

JF - Geoscience Frontiers

IS - 4

M1 - 325

ER -

Consequences of fractal grade distribution for bulk sorting of a copper porphyry deposit

Abstract

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