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Jesse Fisher
Joined: 18 Mar 2009
Posts: 629
Location: San Francisco
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Posted: Mar 11, 2020 11:21 Post subject: Rottleberode? |
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I picked this specimen up a number of years ago, and it was labeled "Cornwall". I'm not an expert on the region, but was always suspicious. After becoming more familiar with some specimens from Rottlebrode I am thinking that this is the correct location, particularly because of the small octahedral faces on the corner of the cubes, and the siderite association. What do the experts think?
Mineral: | Fluorite with Siderite |
Locality: | Rottleberode, Stolberg, Mansfeld-Südharz District, Harz, Saxony-Anhalt/Sachsen-Anhalt, Germany | |
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Dimensions: | 6x5x4 cm overall size. |
Description: |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4905
Location: Barcelona
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Posted: Mar 11, 2020 11:31 Post subject: Re: Rottleberode? |
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It don't seems Rottleberode to me Jesse, but I could be wrong
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4112
Location: Germany
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Posted: Mar 12, 2020 04:30 Post subject: Re: Rottleberode? |
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Hi Jesse, hi Jordi,
I'm ashamed to say that Jordi really could be wrong, but in this case I think he really is. I'm not the greatest Harz expert but I hope I have some knowledge of German fluorites. To me, this looks like it could definitely be from Rottleberode. Pale green and translucent, "missing" cube edges due to the rather cuboctahedral form, some patterns on the crystal faces, brown matrix, we should not exclude Rottleberode, most likely Flußschacht Mine ...
I will not say it IS from Rottleberode, but I think it could be possible, the specimen is not that untypical. Maybe a photo of the matrix could help ...
Regards
Tobi
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Jesse Fisher
Joined: 18 Mar 2009
Posts: 629
Location: San Francisco
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Posted: Mar 12, 2020 08:59 Post subject: Re: Rottleberode? |
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Hello Tobi,
The matrix is almost completely a golden brown siderite. A small crystal of it can be seen at top of the photo. It is very much like one that I have from Stolberg, except that the Stolberg fluorite is colorless: https://www.mineral-forum.com/message-board/download.php?id=45591
Cheers, Jesse
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