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


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).

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Description/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.

Item Type: Article
ISSNs: 0361-0128 (print)
1554-0774 (electronic)
Subjects: Q Science > QE Geology
G Geography. Anthropology. Recreation > GB Physical geography
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: University Structure - Pre August 2011 > School of Civil Engineering and the Environment
ePrint ID: 76134
Date Deposited: 11 Mar 2010
Last Modified: 27 Mar 2014 18:55
URI: http://eprints.soton.ac.uk/id/eprint/76134

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