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Offline Freespirit5795
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« Reply #10 on: May 04, 2011, 02:26:16 pm »
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Well. That would be nice to pick up a rock like that. Grin

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Offline Idaho Jones
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« Reply #11 on: May 05, 2011, 08:32:36 am »
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Sorry I wasn't very clear with that, thanks for the clarification guys.

So what geology is going to produce gold that is black. Heavy silver content? I would think rich iron content would produce a more red oxide but I have found small chunks of iron matrix that were black and contained trace gold. Plus the spanish dore bars seemed to develope a black oxide coating. To have enough gold content to be exciting enough to spend all that time trying to find it I'm guessing there was a good bit in those black rocks.

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Offline BitburgAggie_7377
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« Reply #12 on: May 05, 2011, 09:26:12 am »
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Quote:Posted by Idaho Jones
So what geology is going to produce gold that is black.


I'm not sure what the chemistry involved is (I really should do some research own it), but it really isn't uncommon for objects in the deserts of New Mexico, Arizona, and California to pick up a black coating that's often called "desert varnish".    Just speculating, but could the nuggets have accumulated a coating of caliche (sort like the candy shell around an M&M) and that was turned "black" ?




Posted on: May 05, 2011, 09:19:12 AM
Quote:Posted by BitburgAggie_7377
I'm not sure what the chemistry involved is (I really should do some research own it), but it really isn't uncommon for objects in the deserts of New Mexico, Arizona, and California to pick up a black coating that's often called "desert varnish".    Just speculating, but could the nuggets have accumulated a coating of caliche (sort like the candy shell around an M&M) and that was turned "black" ?





Ask and ye shall receive......from Wikipedia (which we know means "take it with a grain of salt") "Desert varnish forms only on physically stable rock surfaces that are no longer subject to frequent precipitation, fracturing or wind abrasion. The varnish is primarily composed of particles of clay along with iron and manganese oxides.[1] There is also a host of trace elements and almost always some organic matter. The color of the varnish varies from shades of brown to black.[2]"  ---

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Posted on: May 05, 2011, 09:21:11 AM
Since all the black gold accounts I've read indicate that this was a surface find he literally stumbled upon, the varnish theory works, at least for the exposed surfaces and I can see it working for all but the smallest portion of the gold surface resting on the ground or rock beneath.

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Offline Idaho Jones
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« Reply #13 on: May 05, 2011, 11:34:04 pm »
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Nice BA, that makes some sense. That color seems to be a major clue to me that might point to a certain area.

So the area has to be protected from wind abrasion but it was on top of a butte? Also the story talks about a sandstorm, perhaps they were seeking shelter? If there was a sandstorm very often the varnish would be worn away if the nuggets were in the open. Perhaps that is what was meant when the story says he discovered they were gold on the way back. When he stuck them in his pocket the abrasion from walking probably wore the coating off.

Sounds like there must have been an arroyo or canyon on the butte protecting the walnuts for the varnish to form. That would also explain why so many were gathered there from past flooding and erosion. That might also explain why it was hard to relocate.

Too bad he didn't keep a travel journal    Wink

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« Reply #14 on: May 05, 2011, 11:58:06 pm »
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    Peg Leg had been a well known mountain man prior to this.   His closest friends and associates, including Bill Williams, were mountain men/trappers.  While there were a few very notable exceptions like Williams, Benjamin Bonneville, and Jedediah Smith, many of these wandering souls, like Kit Carson, had little or no formal education and were either illiterate or very nearly so.   So many of the "autobiographies" and journals of these guys were dictated to others years after the actual events occured.   So, many of them could not have kept a travelling journal even if they wanted to.   (and for those that could/did, necessity of survival often meant sacrificing such things).

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« Reply #15 on: May 06, 2011, 01:41:59 am »
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   Years and Years ago, I read an article in Treasure Magazine , out of 29 Palms. That there were Two Mexican Miners, brothers they were, out of Sonora, Mexico, who had found gold nuggets incased in a black rock while prospecting up in the Mother Lode. When finally ready to head home, one of the brothers had to go to Frisco on business and the other headed south on his own, along with 2 or 3 burro loads of these nuggets. The authors theory was that the brother with the nuggets was killed by the Indians close to Borrego Springs and a couple of the burros escaped and as the packs deteriorated they would drop these nuggets in different locations. Some were reportedly found in a canyon in the Chocolate Mountains, which are north of Borrego, and some on flat land by Plaster city which is Southeast of Borrego Springs. Both were supposedly found lying on top of the ground.

    Peg-leg was said to have been travelin on a stagecoach, going from Yuma to Los Angeles, when it stopped on a semi-mesa to rest the people and the horses when he picked up a few, put them in his pocket and did not take a better look at them until he reached L.A.! If I remember correctly, someone took the nuggets found in the Plaster City area, to an assayer     and they removed the coating with an acid and this revealed the gold inside, also if I am not mistaken the coating on them was not desert varnish, but a darker coating, something that was removed with the acid. About all I can remember.  Peace!   td

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Offline Idaho Jones
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« Reply #16 on: May 06, 2011, 07:45:50 am »
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Good point BA Smiley it was just wishful thinking. I've actually thought about keeping a journal on my trips but then never get round to it either... if I ever find anything really big it will probably end up here as a lost treasure story  Grin

That's some interesting stuff TD. Kind of makes some sense that the gold had to be deposited somehow, since it's not normally lying on top in a placer. That might help explain the black coating if it was ore mined and redeposited.

A few different ore samples

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Perhaps it was encased in basalt? I'm not terribly familiar with the geology of that area but I'm guessing there would be basalt formations.

The stagecoach story if it could be validated would bring a whole new light to the search areas since most of the old lines have been well researched. Also any assay results could have valuable clues, not the least of which is a waypoint for his journey.



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« Reply #17 on: May 06, 2011, 09:12:56 am »
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Yeah Idaho! Don't know if there are any other stories of black nuggets being found around the Mother Lode area.  Wow! 80 ounces per ton at the Red Lake!!  Wow!  td

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« Reply #18 on: May 06, 2011, 09:31:17 am »
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Here is another story about PL that saying he had gold in quartz. The more I look over the many stories and legends I am beginning to think that we may be dealing with not only several mines but also several Peg Legs



By 1840, with the decline of the fur trade, Smith began kidnapping Native American children to sell as peons to Mexican haciendas. When the local tribes began searching for him, Smith fled to California, where he would become a horse thief for the next decade.

In one incident, Smith guided around 150 Utes under the leadership of Walkara across the Sierra Nevada, stealing at least several hundred horses from Mexican ranchers[citation needed]. Joining Jim Beckwourth and "Old Bill" Williams, Smith helped establish the largest horse theft operation in the Southwest until authorities eventually forced the gang to break up in the late 1840s.

Smith traveled to the Chocolate Mountains (and possibly the Santa Rosa Mountains, or the Borrego Badlands) where, after several years of prospecting, he was forced, by local tribes, to escape the area. Claiming he had discovered a large amount of gold-bearing quartz, Smith sold maps and claims to other prospectors of a mine known as the Lost Pegleg Mine until his death in a San Francisco hospital in 1866.

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Offline BitburgAggie_7377
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« Reply #19 on: May 06, 2011, 10:49:33 am »
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I know that we are dealing with at least two.....and if I remember correctly, they are about 30 to 40 years apart.

BA

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