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20 Jan-04:41:51 Re: damaging a specimen (R Saunders)
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19 Jan-20:26:25 Re: damaging a specimen (Wendellwilson)
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18 Jan-12:52:02 Re: drusy covered coral landscape rock? (Fuss)
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18 Jan-09:09:59 Carmeltazite (Pierre Joubert)
18 Jan-07:31:35 Re: what defines a collection's quality (Daniel Peters)
18 Jan-02:48:25 Re: what could the locality of this grey fluorite cluster (with small cubic crystals) be? (Jordi Fabre)
18 Jan-02:23:33 Re: drusy covered coral landscape rock? (Bob Harman)
18 Jan-01:18:50 Re: drusy covered coral landscape rock? (Vic Rzonca)
18 Jan-00:59:05 Drusy covered coral landscape rock? (Fuss)
17 Jan-22:47:32 Re: columnar marcasite (Kevin Conroy)
17 Jan-21:06:58 Re: what could the locality of this grey fluorite cluster (with small cubic crystals) be? (Bob Harman)

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AmandaRox




Joined: 07 Jan 2019
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Location: TN

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PostPosted: Jan 11, 2019 19:52    Post subject: What is this?  

It's matrix is crazy cool found the rock in Nevada it has gold chunks & silver unsure if it is copper or iron But it has something like that the outer layer is like it burnt it's very heavy no bigger than a fist


0111190621b_HDR-1.jpg
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0111190621b_HDR-1.jpg



1224180704a_HDR-2.jpg
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1224180704a_HDR-2.jpg


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SteveB




Joined: 12 Oct 2015
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PostPosted: Jan 11, 2019 21:15    Post subject: Re: What is this?  

Poor grade pyrite and galena on matrix. Not gold. Not silver. And obviously hasn’t read the posting instructions so nothing else to say on this.
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Bob Harman




Joined: 06 Nov 2015
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PostPosted: Jan 11, 2019 22:44    Post subject: Re: What is this?  

While I agree that the poster has not done helpful homework about giving, us in the forum, much information on the specimen, I would not completely write off this specimen.

The fact that it was found in Nevada does provide an important clue. Nevada lead deposits are argentiferous silver/galena deposits. The superficial mined oxidized zones show the galena had altered to cerussite and anglesite, but deeper zones show the galena to be mixed with the silver, hence argentiferous galena. Lead ore mixed with silver and silver ore mixed with lead were mined in several Nevada districts. Whether this specimen represents an example of this I am not sure, but it just might be. Don't dismiss it completely.

The other Galena in Nevada is an abandoned ghost town. BOB
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Tobi




Joined: 07 Apr 2009
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Location: Good Old Germany


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PostPosted: Jan 12, 2019 02:46    Post subject: Re: What is this?  

Steve and Bob refer to this link:

https://www.mineral-forum.com/message-board/viewtopic.php?p=19487#19487

Please read the instructions carefully and give us as much information as possible on that rock. Otherwise it remains just "a rock" ...

Regards
Tobi
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