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Native silver in quartz ?

Posted by Heath Barnes  
avatar Re: Native silver in quartz ?
May 14, 2012 07:31PM
    
Is it graphite? If you can dent it with your finger nail it could be? I had some emerald with very soft silvery grey graphite, it could easily be dented with a finger nail.

Amanda
Re: Native silver in quartz ?
May 14, 2012 08:50PM
No it can't be scratched with a finger nail Amanda, it leaves a grey- silver streak on the back of a tile but makes quite a noise doing it.
Re: Native silver in quartz ?
May 14, 2012 09:30PM
    
Did you already check whether it could be Molybdänite? Molybdänite occurs often together with quartz opposed to native silver. I add a picture for comparison.

Uwe Ludwig
Attachments:
open | download - Molybdänit-Schlema.JPG (194.7 KB)
Re: Native silver in quartz ?
May 14, 2012 09:45PM
Uwe no and if ime honest as i write this ime still in the dark as to what the mineral you have shown me actually is but yes i agree it looks very similer ime going to google it now but any more images or imformation would be most welcome.
Re: Native silver in quartz ?
May 14, 2012 10:00PM
    
Think Uwe is referring to this mineral " molybdenite " at this location :- http://www.mindat.org/gallery.php?min=2746

Also tend to agree with this suggestion

Regards

Edit,,,, went through all 500+ but could not find the variety/type Uwe alluded too



Edited 1 time(s). Last edit at 05/15/2012 07:45AM by George Creighton.
Re: Native silver in quartz ?
May 14, 2012 10:09PM
Thanks George
Re: Native silver in quartz ?
May 14, 2012 10:57PM
Any more info on this mineral please as usual ive been totaly confused by the google button !
Re: Native silver in quartz ?
May 15, 2012 12:05PM
    
Hello Heath,

google is not the best solution to check minerals. Go to the link: http://www.handbookofmineralogy.org/search.html?p=all.

There you find a complete description of Molybdenite (and of all other minerals).

At the beginning of this thread you wrote about a black soft tarnish. That may be Jordesite which is also a molybdene sulfide.

@George: I found the molybdenite which I showed on the dump of the mine 371. You find the mineral list of this location at Niederschlema, shaft 371. However, this was a relatively rare mineral there.

rgds.
Uwe Ludwig
Re: Native silver in quartz ?
May 15, 2012 03:44PM
    
Thanks Uwe found it now thumbs up

Regards george
Re: Native silver in quartz ?
May 15, 2012 09:14PM
Heath Barnes Wrote:
-------------------------------------------------------
> No it can't be scratched with a finger nail
> Amanda, it leaves a grey- silver streak on the
> back of a tile but makes quite a noise doing it.


Appolagies to all it can be scratched with a finger nail i did not look close enough!!!
Re: Native silver in quartz ?
May 15, 2012 09:32PM
Uwe Ludwig Wrote:
-------------------------------------------------------
> Did you already check whether it could be
> Molybdänite? Molybdänite occurs often together
> with quartz opposed to native silver. I add a
> picture for comparison.
>
> Uwe Ludwig


Uwe thanks for the help one thing that ive not managed to find is anything simmiler to the way my example apears to be flowing through the quartz?
Re: Native silver in quartz ?
June 09, 2012 12:11AM
I have had this piece looked at by Roger and he tells me it is not native Silver in Quartz Sorry we had to much to think about today i think its a form of mica with unexplained black easily polished tarnish ?
Re: Native silver in quartz ?
June 15, 2012 11:03PM
I have now looked some of this stuff up and i think it could be black biotite mica, in quartze?
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