SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Gold/Mining/Energy : Prosperity Goldfields Corp
 Public ReplyPrvt ReplyMark as Last ReadFilePrevious 10Next 10PreviousNext  
To: Natedog who wrote (572)8/1/2011 12:56:39 PM
From: E. Charters  Read Replies (2) of 906
 
This is in addition to your question about grain shape etc on distance of transport.

"Roundness and flatness increase dramatically within the first 5 km from the source, after which the roundness remains relatively unchanged (Knight et al. 1994, 1999b). Flattening of a gold particle requires a relatively large amount of transport, whereas rounding of a particle requires less transport and is commonly noticeable before much fl attening is observed. Knight et al. (1994, 1999b) argued that grain roundness is a more sensitive measure for distances under 5 km, but grain flatness is a more reliable indicator of transport distances greater than 5 km. The original shape of the grain is also a factor in how the particle will be altered by the transport. A small fl at grain will respond differently to these processes than a larger more equant grain.

The thickness of the leached rim on a placer gold grain is not an entirely effective method for gauging the distance from the source, since the abrasive action of the stream is also at work, and some of the rim will be removed. The leached rim can, however, provide a rough estimate of the minimum time since it has been liberated from its source, and an approximate distance from the source."
Report TOU ViolationShare This Post
 Public ReplyPrvt ReplyMark as Last ReadFilePrevious 10Next 10PreviousNext  

HomeMailHotSubjectMarksPeopleMarksKeepersSettings
Terms Of UseContact UsCopyright/IP PolicyPrivacy PolicyAbout UsFAQAdvertise on SI
© 2025 Knight Sac Media.  Data provided by Twelve Data, Alpha Vantage, and CityFALCON News