Fractal distributions of veins in drill core from the Hellyer VHMS deposit, Australia: constraints on the origin and evolution of the mineralising system |
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Authors: | Yuri Gamalei |
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Institution: | Institute of Mineralogy, Freiberg University of Mining and Technology, Brennhausgasse 14, 09596 Freiberg, Germany, Centre for Ore Deposit Research, University of Tasmania, GPO Box 252–79, Hobart, Australia 7001, Institute of Theoretical Physics, Freiberg University of Mining and Technology, Bernhard von Cotta Stra?e 4, 09596 Freiberg, Germany,
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Abstract: | Statistical analysis of the vein thickness distributions of veins in the Cambrian Hellyer volcanic-hosted massive sulfide deposit, Australia, indicates that the vein thickness data conform to power-law distributions characterised by fractal dimensions D. The most intensely mineralised vein type is characterised by a low fractal dimension, whereas weakly mineralised or barren vein types have elevated D-values. The observed differences in the fractal dimensions suggest that the study of vein thickness distributions may provide a tool in exploration. It is also shown that the field observations can be explained by a model linking the fractal dimensions of the vein thickness distributions with the mechanisms responsible for the formation and evolution of the vein systems. |
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