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ahallenbeck
Joined: 19 Jan 2021
Posts: 3
Location: Caroga Lake
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Posted: Jan 20, 2021 19:28 Post subject: Mysterious Red Pyramids in Mexican opal |
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Any idea what these pyramid structures that formed in opal are?
Video here:
https://www.youtube.com/watch?v=s_kPctch97k&t=3s
I am new to forum but will try to attach pictures too.
Any insight/comments appreciated much. Thank you.
Mineral: | Unknown |
Locality: | Sonora, Mexico | |
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Dimensions: | 14 x 11.8 x 6.8mm |
Description: |
Magdalena, Sonora, Mexico |
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6237 Time(s) |
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Mineral: | Unknown |
Locality: | Sonora, Mexico | |
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Dimensions: | 14 x 11.8 x 6.8mm |
Description: |
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Viewed: |
6245 Time(s) |
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Dimensions: | 14 x 11.8 x 6.8mm |
Description: |
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Viewed: |
6251 Time(s) |
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Mineral: | Unknown |
Dimensions: | 14 x 11.8 x 6.8mm |
Description: |
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Viewed: |
6235 Time(s) |
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Bob Harman
Joined: 06 Nov 2015
Posts: 765
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Posted: Jan 20, 2021 20:28 Post subject: Re: Mysterious Red Pyramids in Mexican opal |
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Mexican opal????? Certainly interesting, but usually when it is "too good to be true, it usually is".
Unless a Mexican expert like Peter Megaw can vouch that the specimen is natural and genuine, I favor it being glass or hard clear plastic with inclusions, then facetted and polished.
To my untrained eye, it is not natural. BOB
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alfredo
Site Admin
Joined: 30 Jan 2008
Posts: 979
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Posted: Jan 20, 2021 20:38 Post subject: Re: Mysterious Red Pyramids in Mexican opal |
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The red parts look hexagonal, so perhaps the tips of hematoidal quartz crystals? There is a lot of that where I was recently living in Catalonia.
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Volkmar Stingl
Joined: 23 Sep 2012
Posts: 842
Location: Innsbruck
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Posted: Jan 21, 2021 00:12 Post subject: Re: Mysterious Red Pyramids in Mexican opal |
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alfredo wrote: | The red parts look hexagonal, so perhaps the tips of hematoidal quartz crystals? |
I think the same.
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Riccardo Modanesi
Joined: 07 Nov 2011
Posts: 618
Location: Milano
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Posted: Jan 21, 2021 06:14 Post subject: Re: Mysterious Red Pyramids in Mexican opal |
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Hi to everybody!
Rutile and hematite inclusions are not to be excluded as well! Some opals contain these minerals as inclusion as well!
Greetings from Italy by Riccardo.
_________________ Hi! I'm a collector of minerals since 1973 and a gemmologist. On Summer I always visit mines and quarries all over Europe looking for minerals! Ok, there is time to tell you much much more! Greetings from Italy by Riccardo. |
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ahallenbeck
Joined: 19 Jan 2021
Posts: 3
Location: Caroga Lake
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Posted: Jan 22, 2021 22:12 Post subject: Re: Mysterious Red Pyramids in Mexican opal |
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Thank you for your response! I will look into that.
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ahallenbeck
Joined: 19 Jan 2021
Posts: 3
Location: Caroga Lake
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Posted: Jan 22, 2021 22:14 Post subject: Re: Mysterious Red Pyramids in Mexican opal |
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Thank you for your response! This specimen is from a top opal dealer from Mexico (close to Magdalena). He has sold opals for a long time and has never seen this before. It is real, but I understand your comment and do appreciate it. I tried to post a link from his original post but the spam filter rejected it; appending an exclamation mark after the www.? Anyway, thanks again and cheers from the Adirondacks!
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2069
Location: Oklahoma
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Posted: Jan 23, 2021 09:34 Post subject: Re: Mysterious Red Pyramids in Mexican opal |
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ahallenbeck wrote: | I tried to post a link from his original post but the spam filter rejected it; appending an exclamation mark after the www.? Anyway, thanks again and cheers from the Adirondacks! |
The non-commercial nature of the forum doesn't allow posting of links to commercial sites.
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Amir Akhavan
Joined: 01 Dec 2009
Posts: 95
Location: Hamburg
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Posted: Jan 23, 2021 15:33 Post subject: Re: Mysterious Red Pyramids in Mexican opal |
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I agree with Bob that this could be artificial, some hard epoxy or the like.
You should get it tested.
Specific weight would help.
_________________ Amir C. Akhavan, Hamburg, Germany |
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