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A fractal relationship between vein thickness and gold grade in drill core from La Codosera, Spain

A fractal relationship between vein thickness and gold grade in drill core from La Codosera, Spain
A fractal relationship between vein thickness and gold grade in drill core from La Codosera, Spain
Analysis of quartz vein thicknesses and gold grades in drill core from western Spain indicates that both approximate a power law distribution, suggesting an underlying fractal relationship. Log-log plots of cumulative frequency (N) against vein thickness (t) show systematic changes in relation to gold grade. The exponent D, in a power law of the form N = C t (super -D) , is lower for higher gold grades, indicating that a greater proportion of the dilation is taking place on the thicker veins, which are interpreted as providing interconnected conduits for gold-bearing fluids. Thus, monitoring the vein thickness distribution may provide a means of discriminating mineralized and barren structures in vein-hosted mineral deposits.
0361-0128
168-173
Sanderson, David J.
5653bc11-b905-4985-8c16-c655b2170ba9
Roberts, Stephen
f095c7ab-a37b-4064-8a41-ae4820832856
Gumiel, Pablo
da4b627d-85ed-45ea-b4c3-9482975f783a
Sanderson, David J.
5653bc11-b905-4985-8c16-c655b2170ba9
Roberts, Stephen
f095c7ab-a37b-4064-8a41-ae4820832856
Gumiel, Pablo
da4b627d-85ed-45ea-b4c3-9482975f783a

Sanderson, David J., Roberts, Stephen and Gumiel, Pablo (1994) A fractal relationship between vein thickness and gold grade in drill core from La Codosera, Spain. Economic Geology, 89 (1), 168-173. (doi:10.2113/gsecongeo.89.1.168).

Record type: Article

Abstract

Analysis of quartz vein thicknesses and gold grades in drill core from western Spain indicates that both approximate a power law distribution, suggesting an underlying fractal relationship. Log-log plots of cumulative frequency (N) against vein thickness (t) show systematic changes in relation to gold grade. The exponent D, in a power law of the form N = C t (super -D) , is lower for higher gold grades, indicating that a greater proportion of the dilation is taking place on the thicker veins, which are interpreted as providing interconnected conduits for gold-bearing fluids. Thus, monitoring the vein thickness distribution may provide a means of discriminating mineralized and barren structures in vein-hosted mineral deposits.

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Published date: 1 February 1994

Identifiers

Local EPrints ID: 76134
URI: https://eprints.soton.ac.uk/id/eprint/76134
ISSN: 0361-0128
PURE UUID: e5140cee-8e04-408c-9768-fda4cb2f17b8
ORCID for David J. Sanderson: ORCID iD orcid.org/0000-0002-2144-3527
ORCID for Stephen Roberts: ORCID iD orcid.org/0000-0003-4755-6703

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Date deposited: 11 Mar 2010
Last modified: 06 Jun 2018 13:14

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Contributors

Author: David J. Sanderson ORCID iD
Author: Stephen Roberts ORCID iD
Author: Pablo Gumiel

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