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Gold particle size distribution in Au deposits (2 replies and 1 comment)
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Hi there, I'm completely new to 911 Metallurgist, but maybe someone here can help me out!
I'm looking for studies that characterize the gold particle size distribution in different geological deposit types (I'm a geologist). I would like to know how the size distribution of Au particles varies in different deposits, so that we can better target our Au exploration programs.
We are looking at doing large-scale till sampling programs in the Canadian Shield where the dominant deposits type is orogenic Au (quartz-carbonate shear-hosted veins with Au). The glaciers came along and milled everything up in the last ice age, and before sending the till samples for analysis they are sieved to a certain size fraction based on standard sieve sizes. I'm trying to find out what's the best sieve size, which to me, would be determined by the Au particle size distribution (for free gold), and also the mineralogy and where the Au occurs in most of these deposits.
I've been looking around in some metallurgical sections from 43-101 reports, but they don't really get to the data that I would like (most are focusing on optimizing grinding size for the economics, but they don't really touch on the Au particle size distribution).
Where should I look for this information? Mineralogy reports? Is there anywhere I should be looking in the public archives i.e. 43-101's, scientific journals, etc.?
Many thanks for any help,