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Is this a gold ore???
  
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vdhinesh79




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PostPosted: Oct 26, 2024 04:49    Post subject: Is this a gold ore???  

I found it in a lake in madurai tamilnadu india.


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vdhinesh79




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PostPosted: Oct 26, 2024 04:50    Post subject: Re: Is this a gold ore???  

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vdhinesh79




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PostPosted: Oct 26, 2024 04:51    Post subject: Re: Is this a gold ore???  

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PostPosted: Oct 26, 2024 05:39    Post subject: Re: Is this a gold ore???  

It is possibly fools gold (Pyrite) but the focus on the photos makes it very hard to tell. It could also be Chalcopyrite. This might help (it mentions neither mineral, Biotite Mica is a possibility)

https://www.mindat.org/loc-53375.html
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vdhinesh79




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PostPosted: Oct 26, 2024 07:25    Post subject: Re: Is this a gold ore???  

But this specimen is completely non magnetic, hence it can't be Biotite Mica.
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alfredo
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PostPosted: Oct 28, 2024 02:35    Post subject: Re: Is this a gold ore???  

The magnetism of such a tiny amount of biotite would not be noticeable.
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vdhinesh79




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PostPosted: Oct 28, 2024 03:29    Post subject: Re: Is this a gold ore???  

You are right hence I crushed a magnet into very small piece and saw whether they become attracted to the black part of the specimen but I saw no magnetic effect.
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vdhinesh79




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PostPosted: Oct 28, 2024 06:01    Post subject: Re: Is this a gold ore???  

Also it hardness is surely above 4.
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PostPosted: Oct 28, 2024 06:27    Post subject: Re: Is this a gold ore???  

Thus not Gold: https://www.mindat.org/min-1720.html

vdhinesh79 wrote:
Also it hardness is surely above 4.
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vdhinesh79




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PostPosted: Oct 28, 2024 10:22    Post subject: Re: Is this a gold ore???  

I was talking about the hardness of the parent rock not the gold part.
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lluis




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PostPosted: Oct 28, 2024 11:55    Post subject: Re: Is this a gold ore???  

Well, if you are sure it is gold, a chemical test could let you know if it is....
Simply try to disolve a piece of the looking glistening parts in aqua regia. It if disolves, it may be.
If not, by sure not.
In case part or all is disolved, dilute and add some drops of aqueous tin chloride.
If a purple color/precipitate occurs "cassius purple", then gold there.

If not, no gold

Be careful with chemical reagents: are poisonous and corrosive...Wear gloves and eyes glasses and do not do at home. No drop rests at waste water, dispose adequately.

Anyway, were we have our summer home, many times when child of a neighbor comes asking if he has find gold (many brilliant small pieces inside sand...). It was just mica. that I would swear that is in this case Muscovite, that as far as I know is not magnetic at all, and would like the piece you have...

So, still a mica could looks like gold...

With best wishes

Lluís
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Matt_Zukowski
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PostPosted: Oct 28, 2024 12:07    Post subject: Re: Is this a gold ore???  

vdhinesh79 - you seem to really want your specimen to be gold. From the information you have given, we cannot help you further. I am sure you have local resources who can help you further - maybe even a jeweler can help you. But ask yourself - can you really be the first person who has found gold in your area, especially such large xtals? Isn't it more likely that what you have found is not gold?

Good luck.
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Jordi Fabre
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PostPosted: Oct 28, 2024 12:10    Post subject: Re: Is this a gold ore???  

Matt_Zukowski wrote:

vdhinesh79 - you seem to really want your specimen to be gold. From the information you have given, we cannot help you further. I am sure you have local resources who can help you further - maybe even a jeweler can help you. But ask yourself - can you really be the first person who has found gold in your area, especially such large xtals? Isn't it more likely that what you have found is not gold?

Good luck.



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vdhinesh79




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PostPosted: Oct 28, 2024 12:12    Post subject: Re: Is this a gold ore???  

lluis wrote:
Well, if you are sure it is gold, a chemical test could let you know if it is....
Simply try to disolve a piece of the looking glistening parts in aqua regia. It if disolves, it may be.
If not, by sure not.
In case part or all is disolved, dilute and add some drops of aqueous tin chloride.
If a purple color/precipitate occurs "cassius purple", then gold there.

If not, no gold

Be careful with chemical reagents: are poisonous and corrosive...Wear gloves and eyes glasses and do not do at home. No drop rests at waste water, dispose adequately.

Anyway, were we have our summer home, many times when child of a neighbor comes asking if he has find gold (many brilliant small pieces inside sand...). It was just mica. that I would swear that is in this case Muscovite, that as far as I know is not magnetic at all, and would like the piece you have...

So, still a mica could looks like gold...

With best wishes

Lluís

Thanks man
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vdhinesh79




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PostPosted: Oct 29, 2024 03:57    Post subject: Re: Is this a gold ore???  

Jordi Fabre wrote:
Matt_Zukowski wrote:

vdhinesh79 - you seem to really want your specimen to be gold. From the information you have given, we cannot help you further. I am sure you have local resources who can help you further - maybe even a jeweler can help you. But ask yourself - can you really be the first person who has found gold in your area, especially such large xtals? Isn't it more likely that what you have found is not gold?

Good luck.



👏


Thanks man
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