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Minerals from Ojuela Mine in Mapimi, Mexico
  
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jwoll




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PostPosted: May 07, 2008 10:03    Post subject: Minerals from Ojuela Mine in Mapimi, Mexico  

I need help in some of the ID's. I will include a photos below but photo quality is not good. I think there is a nice wulfenite piece as this seems to be common from that locale.

Thanks,
Jim



Rocks and Karl #2-47.jpg
 Description:
?? nice black and white separate crystals about 2 cm. each
 Viewed:  30356 Time(s)

Rocks and Karl #2-47.jpg



Karl Confirmation and Rocks-23.jpg
 Description:
I think they called this selenite
 Viewed:  30386 Time(s)

Karl Confirmation and Rocks-23.jpg



Rocks and Karl #2-30.jpg
 Description:
Wulfenite?
 Viewed:  30358 Time(s)

Rocks and Karl #2-30.jpg


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Jordi Fabre
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PostPosted: May 07, 2008 10:19    Post subject: Re: MINERALS FROM OJUELA MINE IN MAPIMI, MEXICO  

Second photo is a Gypsum (Selenite), third photo is a Wulfenite from Los Lamentos Chihuahua, and the first one looks to me as a Calcite but I'm not totally sure.

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alfredo
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PostPosted: May 07, 2008 12:53    Post subject: Re: MINERALS FROM OJUELA MINE IN MAPIMI, MEXICO  

I agree with Jordi on all of them.
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jwoll




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PostPosted: May 07, 2008 13:52    Post subject: Re: MINERALS FROM OJUELA MINE IN MAPIMI, MEXICO  

Thank you on the fast reply. You're the best. I will try and post a couple of other samples as now I am curious as to what I am looking at. I will try a couple of other angles of the unkown sample.


Rocks and Karl #2-10.jpg
 Description:
Different sample. Same locale?
 Viewed:  30323 Time(s)

Rocks and Karl #2-10.jpg



Rocks and Karl #2-40.jpg
 Description:
Another angle
 Viewed:  30326 Time(s)

Rocks and Karl #2-40.jpg



Rocks and Karl #2-40.jpg
 Description:
This another picture of the unkown mineral.
 Viewed:  30322 Time(s)

Rocks and Karl #2-40.jpg


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jwoll




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PostPosted: May 07, 2008 13:55    Post subject: Re: MINERALS FROM OJUELA MINE IN MAPIMI, MEXICO  

Thanks Alfredo. I did not realize that the ojuela mine is so reknowned. I travel in that region on a yearly basis. However, it looks as though some of the samples are brought in for the tourist trade. I can't remember which samples I bought at the local rock shop and which I bought from the guy on the burro outside the mine entrance, but it seems as though you experts can tell the locale from the mineral. I will reseaerch Los Lomentos.
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Jordi Fabre
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PostPosted: May 08, 2008 02:00    Post subject: Re: MINERALS FROM OJUELA MINE IN MAPIMI, MEXICO  

The mineral of the photo: "Rocks and Karl #2-10.jpg" looks like a poor Adamite and the specimen of the photos "Rocks and Karl #2-40.jpg" looks like a Calcite scalenohedrons recovered by some other mineral, maybe Hematite or maybe a second generation of Calcite, hard to tell you by these dark photos.

Jordi
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Tony L. Potucek




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PostPosted: May 08, 2008 14:22    Post subject: Re: MINERALS FROM OJUELA MINE IN MAPIMI, MEXICO  

Unless age has diminished my memory ( very likely), the Ojuela mine produced some of these bi-colored wulfenites, so I wouldn't discount the possibility that the specimen came from the Ojuela, like the others.... it does not look like a Los Lamentos specimen to me....
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GneissWare




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PostPosted: May 08, 2008 14:56    Post subject: Re: MINERALS FROM OJUELA MINE IN MAPIMI, MEXICO  

Tony's memory is not gone! Mapimi did produce wulfenites like look like those pictured. It would be easier to tell if the photos were a bit brighter. If they have mottramite they definitely are from Mapimi.
Bob
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jwoll




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PostPosted: May 08, 2008 15:26    Post subject: Re: MINERALS FROM OJUELA MINE IN MAPIMI, MEXICO  

I will upload a better, brighter picture of 2-30 from ojuela.
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Peter Megaw
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PostPosted: May 08, 2008 18:31    Post subject: Re: MINERALS FROM OJUELA MINE IN MAPIMI, MEXICO  

Gentlemen: The selenite is from the Platosa Mine just east of Ojuela...try putting a UV light on it to see if it has a fluorescent phantom in it...many from here do.

The wulfenite is from the Cumbres Orebody at Ojuela...I have handled several large lots of this over the years...teh color and sandwich zoning are typical

The adamite is indeed a poor specimen from Ojuela...there are tons of this stuff out there

The "unknown" looks like a "dogtooth" calcite probably from Santa Eulalia...not sure what the greenish coloring is...is this under UV? Many of the dogtooths are partially encrusted with selenite which sometimes has uranium minerals in it that will fluoresce yellow-green

Suerte

Peter
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PostPosted: May 09, 2008 01:51    Post subject: Re: MINERALS FROM OJUELA MINE IN MAPIMI, MEXICO  

Thanks Peter, after your opinion I change my thought and I agree that the Wulfenite should be from Ojuela. Anyway, if jwoll upload a brighter picture, still better.

Jordi
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jwoll




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PostPosted: May 09, 2008 09:43    Post subject: Re: MINERALS FROM OJUELA MINE IN MAPIMI, MEXICO  

You guys are the best! I will head out to ojuela for sure next time I am in Gomez Palacio. I haven't been to the mine for years since they replaced the bridge. I will get better pictures for you guys, perhaps using my closeup rings. I will also try to find a UV light and a Geiger counter.
Thanks, Jim
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PostPosted: May 09, 2008 09:55    Post subject: Re: MINERALS FROM OJUELA MINE IN MAPIMI, MEXICO  

The bridge is a regional tourist attraction these days...and they will take you underground for a modest fee...be prepared to shoot pictures underground. The mineral business is VERY slow there these days, but if you ask around town you might get lucky. If you're a micromineral collector the dumps are fantastic!
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