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acanthite
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Joined: 08 May 2007
Posts: 261
Location: Western hemisphere
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| Posted: Thu Apr 10, 2008 9:16 pm Post subject: anglesite crystals |
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Below is a specimen of anglesite crystals (PbSO4 - lead sulfate), some with near double terminations (where both ends of the crystal have faces, rather than one or both ends buried in the surrounding rock). It comes from the Tsumeb mine, located in northern Namibia. I bought it from another mineral collector in Johannesburg. The color of this specimen is very specific to the part of the mine from which it was taken (an anglesite 'variety' if you will).
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acl864
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Location: Central NC
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| Posted: Fri Apr 11, 2008 5:56 am Post subject: |
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Beautiful specimen! I've never seen anything like that before.
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Andy |
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imdaffy
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Joined: 06 Apr 2007
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Location: Moncks Corner, SC.
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| Posted: Fri Apr 11, 2008 6:55 am Post subject: |
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Good job acanthite, very interesting. I enjoy your postings.  daffy
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A nickel ain't worth a dime anymore.
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acanthite
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Posts: 261
Location: Western hemisphere
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| Posted: Fri Apr 11, 2008 11:56 am Post subject: |
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Thanks, I'm glad you guys find it interesting. By the way, I can't convey with a picture how heavy it is, but if you pick it up you know right away something is up with the density (lots of lead). |
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AdamL
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Joined: 20 Apr 2007
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Location: Central Missouri
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| Posted: Fri Apr 11, 2008 1:46 pm Post subject: |
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| acl864 wrote: |
| Beautiful specimen! I've never seen anything like that before. |
Nor have I.
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David Jones
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Joined: 15 Sep 2007
Posts: 238
Location: Hills of Kentucky
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| Posted: Sat Apr 12, 2008 11:29 am Post subject: |
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Does it look that way naturally or has it been cleaned up some way? |
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acanthite
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Location: Western hemisphere
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| Posted: Sat Apr 12, 2008 11:26 pm Post subject: |
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| David Jones wrote: |
| Does it look that way naturally or has it been cleaned up some way? |
Those are the natural surfaces. It may have had some dust on it from the underground blasting that opened up the void where it was growing. Thus it may have been sprayed with water. |
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David Jones
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Posts: 238
Location: Hills of Kentucky
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| Posted: Mon Apr 14, 2008 10:20 am Post subject: |
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years ago when I was working under ground in the coal mine we would sometimes find things, but nothing like that. |
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