Have you ever seen anugget like this? It looks to be a alloy of copper and gold, and I can see 2 spots that look to be shot with gold. I found this gold nugget near by. The coating is manganese verdigris copper, not attracted to a neo magnet, weighs close to 2 pounds maybe a little more.
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Nugget Question
- Thread starter Ant
- Start date
flinthunter
Well-known member
A specific gravity test will tell you a lot.
Well flinthunter I got a rough volume of 3 ci, and a weight of 245 g and calculated a sp of 4.9058 much lower than the sp for aluminum. It feels like gold or lead in the hand and I've handled it for hours and never had to my hands. I was confused but then I noticed that it has cavities, a bubble (blue circle) and a bulbous area that must contain sealed chambers (white outline), that's evidence of being hollow. I'm using a piece of red paper as a probe (red circle) to illustrate some of the open cavities. This is why the sp test isn't working. I might try to get the mass reading again.
I think float copper crystal nugget but why isn't my hands getting dirty after handling it for hours. Even rubbing it with spit and a white cotton cloth transfers no color to the cloth. Wouldn't pure or high content copper transfer a dark green color to the hands or to a white cotton buffing cloth? The specimen is dazzling even if I say so myself. Here's some moreppicture with a copper wheat penny to compare the color contrast:
I think float copper crystal nugget but why isn't my hands getting dirty after handling it for hours. Even rubbing it with spit and a white cotton cloth transfers no color to the cloth. Wouldn't pure or high content copper transfer a dark green color to the hands or to a white cotton buffing cloth? The specimen is dazzling even if I say so myself. Here's some moreppicture with a copper wheat penny to compare the color contrast:
You'd be surprised on how copper can fool the eye , and rubbing in with a white cloth doesn't always have to leave a residue. In the first photos I see more blue than green so it might even be a Bronze alloy .Try laying it (or wrapping it) in a Vinegar soaked rag for a few hours or better overnight and then see if it bleeds green , open the rag and let it aerate for awhile . If it's copper it should show the green on the rag and the piece will turn blueish if it's a Bronze or Bronze alloy ... IMHO , Woodstock
And the bulbs can be formed easily if it is melted copper dropped in a repair (gas welding) or smelted copper scrap . I seen and held raw natural copper from the UP of Michigan . I really hope it's Gold but it needs to be tested more . heck , just take it to a Jewelers or Pawn shop and they'll test it on the spot and it's free Woodstock
And the bulbs can be formed easily if it is melted copper dropped in a repair (gas welding) or smelted copper scrap . I seen and held raw natural copper from the UP of Michigan . I really hope it's Gold but it needs to be tested more . heck , just take it to a Jewelers or Pawn shop and they'll test it on the spot and it's free Woodstock
Thanks for the reply Woodstock.
Well guess what, I set up the experiment taking particular care by being precise as possible. I placed the glass inside the measuring pitcher. Then being careful by filling the glass to the rim without breaking the surface tension. Then I lowered the specimen down into the water below the surface. Then I used a paper towel to remove s enough water to remove the sample and then the glass. Then I used a 1cc syringe to measure the overflow. I got 15.5 cc of water.
So 15 cc of displaced h2o is the same as 15.5 ml.
Then my new quantitative analysis for the sp is 15.80.
Here's how I got that:
15.5 ml /x 50= 15.806451613
Gold
...
Well guess what, I set up the experiment taking particular care by being precise as possible. I placed the glass inside the measuring pitcher. Then being careful by filling the glass to the rim without breaking the surface tension. Then I lowered the specimen down into the water below the surface. Then I used a paper towel to remove s enough water to remove the sample and then the glass. Then I used a 1cc syringe to measure the overflow. I got 15.5 cc of water.
So 15 cc of displaced h2o is the same as 15.5 ml.
Then my new quantitative analysis for the sp is 15.80.
Here's how I got that:
15.5 ml /x 50= 15.806451613
Gold
...Hey Woodstock and flinthunter. I can read the nugget and here's what I think happend. I know every nugget isuniquebut this one is especially
unique. A valuable specimen that shows how it came to be. Sre below, do you see what I'm trying to explai?
Okay this is my hypothesis on how this gold came to the surface and formed this nugget. It looks like it came from a ledge (a gold ledge). In the screen capture the side of the nugget we are looking at would have been against the rock. The blue line shows where the gold exited the ledge (a small irregulars fisher a few inches long). It looks like there were at least 2 separate eruption event's that cause gold to come out of the fisher that was located on a vertical spot on the ledge.
The evidence of this are in the dripping fingers, the red and white lines point out the fingers (see how they were pulled down by gravity). I also notice the different color on the fingers, and how after the first set of fingers cooled the second set came and were pushed to the side by the cold gold blocking its way. That what shows me at least 2 events separate events occurred. The gold must have looked shiny and bright. But after eons and eons being exposed it became the center of a stalagtite (not s stalagmite) coated by manganese and cooper verdigris.
unique. A valuable specimen that shows how it came to be. Sre below, do you see what I'm trying to explai?
Okay this is my hypothesis on how this gold came to the surface and formed this nugget. It looks like it came from a ledge (a gold ledge). In the screen capture the side of the nugget we are looking at would have been against the rock. The blue line shows where the gold exited the ledge (a small irregulars fisher a few inches long). It looks like there were at least 2 separate eruption event's that cause gold to come out of the fisher that was located on a vertical spot on the ledge.
The evidence of this are in the dripping fingers, the red and white lines point out the fingers (see how they were pulled down by gravity). I also notice the different color on the fingers, and how after the first set of fingers cooled the second set came and were pushed to the side by the cold gold blocking its way. That what shows me at least 2 events separate events occurred. The gold must have looked shiny and bright. But after eons and eons being exposed it became the center of a stalagtite (not s stalagmite) coated by manganese and cooper verdigris.
Soak it in battery acid or muriatic acid. Gold should not react, copper will react. Either way the form looks more like a melted metal than a native crystal metal be it copper or gold. My guess is copper, an acid bath for a small piece for a few days will tell. Did you find it in a river or river gravel or in soil?
HH
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HH
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