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marco campos-venuti
Joined: 09 Apr 2014
Posts: 208
Location: Sevilla
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Posted: Apr 03, 2024 13:49 Post subject: Fluorite twin mistery |
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We all have drawers full of samples that we don't know what they are. Some day I wake up a little bit Poirot and I start investigating one of those samples, but since I can't solve the mystery, I propose it to you.
It is a sample that I purchased at La Union Mineral Show (Spain) in 2006 for 5 euros and without any label, in a 4x4 box. It is a clear fluorite crystal, twinned according to the spinel law.
The clues I can give you are:
1) on the back there are some hematite crystals attached, some of which are also included in the fluorite, so it seems clear that the now loose crystal originally rested on a layer of crystallized specularitic hematite.
2) the fluorite fluoresces pink at shortwaves UV.
Do you have any suggestions?
Mineral: | Fluorite |
Description: |
Spinel law twinned crystal |
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Viewed: |
1598 Time(s) |
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Mineral: | Fluorite |
Description: |
Spinel law twinned crystal |
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Viewed: |
1598 Time(s) |
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Mineral: | Fluorite, hematite |
Description: |
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Viewed: |
1599 Time(s) |
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Mineral: | Fluorite |
Description: |
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Viewed: |
1601 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4919
Location: Barcelona
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Posted: Apr 03, 2024 16:42 Post subject: Re: Fluorite twin mistery |
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Very difficult, Marco. Its association with that 'kind-of-alpine' Hematite, rules out several possible origins, and the date and place where you bought it practically rule out Huanggang.
Let's hope for the best, but perhaps we won't be able to identify the locality in this case...
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Josele
Joined: 10 Apr 2012
Posts: 410
Location: Tarifa, Spain
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Posted: Apr 03, 2024 16:58 Post subject: Re: Fluorite twin mistery |
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Just commenting that the only fluorite fluorescing red that I remember is Mexican.
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