Native silver in quartz ?

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

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.

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 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.

Think Uwe is referring to this mineral " molybdenite " at this location :- [www.mindat.org]

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 06:45AM by George Creighton.

Thanks George

Any more info on this mineral please as usual ive been totaly confused by the google button !

Hello Heath,

google is not the best solution to check minerals. Go to the link: [www.handbookofmineralogy.org].

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

Thanks Uwe found it now

Regards george

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!!!

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?

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 ?

I have now looked some of this stuff up and i think it could be black biotite mica, in quartze?