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Kaprak
Joined: 02 Mar 2022
Posts: 2
Location: Missouri
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 Posted: Apr 02, 2023 13:47 Post subject: Where do I find help with mineral specimen identification? |
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I found this specimen at in Washington County, MO and am not sure where to start with identifying it!
| Dimensions: | 5 x 5 x 4 |
| Description: |
| Specimen feels heavy, is very shiny when scratched, when rubbed releases silver-metallic dust |
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Kaprak
Joined: 02 Mar 2022
Posts: 2
Location: Missouri
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| Posted: Apr 02, 2023 13:50 Post subject: Re: Where do I find help with mineral specimen identification? |
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| Kaprak wrote: | | I found this specimen at in Washington County, MO and am not sure where to start with identifying it! |
I apologize if I am doing this post incorrectly. I am still figuring out the site.
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Mike Chontofalsky
Joined: 13 Sep 2013
Posts: 15
Location: Centralia, IL
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| Posted: Apr 02, 2023 14:33 Post subject: Re: Where do I find help with mineral specimen identification? |
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| Hi Kaprak, I have collected the area a number of times. My guess would be Galena (lead sulfide). It looks very weathered. Some suggestions I have found helpful to me 1) visit local library for rock & mineral books 2) search out & join a local rock collectors club 3) visit a local gem & mineral show 4) subscribe to one of the many good mineral magazines. and of course follow the many fine posts on this site. Enjoy this great hobby.
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rgangue
Joined: 21 Sep 2020
Posts: 11
Location: Missouri
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| Posted: Apr 02, 2023 21:29 Post subject: Re: Where do I find help with mineral specimen identification? |
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Hi Kaprak,
Mike is correct. You have found a very weathered galena. Galena is relatively common in that area as well as drusy quartz which is all over the place and a lot of barite which is white when broken.
The criss-cross pattern you see is the weathering and alteration of the galena along cleavage planes. It is likely altering to cerussite (PbCO3) where you see the white lines.
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James Catmur
Site Admin
Joined: 14 Sep 2006
Posts: 1462
Location: Cambridge
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