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Strategies & Market Trends : Winter in the Great White North -- Ignore unavailable to you. Want to Upgrade?


To: Peach who wrote (2650)7/30/2002 7:40:28 PM
From: marcos  Read Replies (1) | Respond to of 8273
 
Placer in spanish means [among other unrelated things] a sand bank in the sea or in a river, or such sandbanks as were originally formed by water action, so it looks like that's the origin of the term in english .... refers to alluvial mining, as opposed to hardrock or lode mining .... basically it's harvesting the fruits of Nature's labour after She has done the hard work for you using water to concentrate the gold or platinum or whatever that was heavier than that in which it was emplaced .... hmm, emplaced, related term no doubt

Playa means 'beach' in sp, i've seen the word used in english to describe alluvial deposits in interior areas presently far from the sea .... refers more specifically to large flat sandy areas .... the action of mining it, that would be placer mining, and a playa would be one style of a placer deposit ... placer would be entirely open-cast, i.e. not underground mining, and tends to involve things like Knelson concentrators [they have a site on the net, check google for knelson, as i recall they had interesting pages on it] [or maybe it was one of their competitors]

We should be in the black with those PoS ngt and xcl by the end of this coming month, i think ... interesting article here, courtesy of a poster on Frank P's thread - schaeffersresearch.com ... check out the July increase in the short interest on Kinross, woo, from 2.7m in june to 7.4m in july .... i don't know Schaeffer's record well but he does seem to make sense with those charts

EC is right in his previous post, i said that wrong - it's not that the gold is transported far, it's that everything else in which the gold was emplaced is transported away, the gold tends to remain as it is heavier .... he is wrong on one thing, there is no t in the word bandido, sadly he is right about the business of secuestración [kidnapping] in México, the numbers of incidents were rising fast up to two years ago or so, don't know about lately, but parts of the country are getting to sound like Chicago at times ...... got to run, back later .... cheers



To: Peach who wrote (2650)7/30/2002 7:46:11 PM
From: E. Charters  Read Replies (2) | Respond to of 8273
 
Don't ask marcos. marcos doesn't know what a placer is. Marcos is a logger turned farmer. He shoots placer miners and prospectors who show up at his hacienda.

The word placer is from spaniol. It comes from playa or beach, where placers often form from wave action.

imcg.wr.usgs.gov

A placer deposit is a secondary concentration of gold or other metal/mineral from another usually hardrock source, by processes of erosion of the primary source, removal of rubble and metal by slumping or flow, and reconcentration by wave, flowing water, or wind which removes the lighter material and raise the grade of the paystreak. A placer can be buried by other sediment, or in a stream bed, or beneath volcanic rock. It can also be buried and relithified into a so-called fossil placer as the gold mines in South Africa are. Placer deposits are characterized by their heavy sand, gravelly, cobelly nature, due to the fact that lighter finer sands are washed away frequently.

Placers can be worked by digging, washing, and further concentration, often with rockers, sluiceboxes and other wash plants. Today, spirals, knelson concentrators and other systems are used on sands. In Russia vast placer areas have been worked since the 1800's with very mechanized methods, and there were developed the modern centrifugal concentrators such as the Falcon, which has a 1934 Czech patent and the forerunner of the Knelson. The Knelson takes advantage of the lack of a patent treaty with the former Soviet Union and is a copy of the Czechoslovakian "Falcon-type", which was used in the goldfields in the Soviet.

EC<:-}