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02 Jul-14:07:28 Re: collection of michael shaw (Michael Shaw)
02 Jul-13:38:52 Cuprite on calcite from congo d. R. / #mvm (minerals - virtual museum) collection (Jordi Fabre)
02 Jul-10:23:30 Re: libyan desert glass structure (Craig Hagstrom)
02 Jul-10:06:48 Re: libyan desert glass structure (Marco Campos-venuti)
02 Jul-09:29:48 Re: libyan desert glass structure (Craig Hagstrom)
02 Jul-09:12:17 Re: libyan desert glass structure (Marco Campos-venuti)
02 Jul-09:02:38 Re: libyan desert glass structure (Craig Hagstrom)
02 Jul-08:49:56 Re: libyan desert glass structure (Marco Campos-venuti)
02 Jul-06:09:25 Re: libyan desert glass structure (James Catmur)
01 Jul-14:47:07 Re: libyan desert glass structure (Alfredo)
01 Jul-09:55:00 Re: libyan desert glass structure (Craig Hagstrom)
01 Jul-05:05:41 Re: libyan desert glass structure (Roger Warin)
01 Jul-01:07:57 The mizunaka collection - elbaite (Am Mizunaka)
30 Jun-21:33:59 Re: some rare phosphates from the democratic republic of congo and zimbabwe (Roger Warin)
30 Jun-14:52:04 Re: libyan desert glass structure (Craig Hagstrom)
30 Jun-14:39:38 Re: libyan desert glass structure (Marco Campos-venuti)
30 Jun-13:55:05 Re: tourmaline namibia? (Izak)
30 Jun-13:07:14 Re: libyan desert glass structure (Craig Hagstrom)
30 Jun-12:24:05 Re: libyan desert glass structure (Marco Campos-venuti)
30 Jun-12:07:00 Re: gwindel skutterudite? (Marco Campos-venuti)
30 Jun-11:52:28 Re: libyan desert glass structure (Craig Hagstrom)
30 Jun-08:17:07 Re: collection of michael shaw (Michael Shaw)
30 Jun-07:28:28 Re: the mim museum in beirut, lebanon (Mim Museum)
30 Jun-03:02:46 Re: some rare phosphates from the democratic republic of congo and zimbabwe (Knut Eldjarn)
29 Jun-18:12:45 Azurite (Silvia)

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  Topic: Synthetic smoky quartz?
Fraxinus

Replies: 11
Views: 11291

PostForum: Minerals and Mineralogy   Posted: Apr 12, 2021 05:01   Subject: Re: Synthetic smoky quartz?
Because there are vast amounts of synthetic quartz used by electronics/telecom industry, nothing apparently prohibits using some outdated facilities equipment to grow such things. It is unclear, howev ...
  Topic: Synthetic smoky quartz?
Fraxinus

Replies: 11
Views: 11291

PostForum: Minerals and Mineralogy   Posted: Apr 12, 2021 04:42   Subject: Re: Synthetic smoky quartz?
They are not glued, as there are absolutely no gaps between the small crystals at the base and the large ones. Additionally, some of these smaller guys form "bridges", emerging from the face ...
  Topic: Synthetic smoky quartz?
Fraxinus

Replies: 11
Views: 11291

PostForum: Minerals and Mineralogy   Posted: Apr 11, 2021 17:43   Subject: Re: Synthetic smoky quartz?
I previously found one, quite similar in appearance, but smaller (link was rejected by automatic spam filter, sorry).

All of these specimens share the same traits: It's a cluster of larger crystals ...
  Topic: Synthetic smoky quartz?
Fraxinus

Replies: 11
Views: 11291

PostForum: Minerals and Mineralogy   Posted: Apr 11, 2021 15:02   Subject: Re: Synthetic smoky quartz?
Do you think these angled surface features result from natural etching process? Other natural quartz crystals I’ve seen all have straight “terraces” perpendicular to the edge (exactly like these shown ...
  Topic: Synthetic smoky quartz?
Fraxinus

Replies: 11
Views: 11291

PostForum: Minerals and Mineralogy   Posted: Apr 11, 2021 13:53   Subject: Synthetic smoky quartz?
Hello, Friends of Minerals!

Please confirm if I correctly identify the specimen of smoky quartz as synthetic. I never heard before that such things are produced, but after looking up this forum (pa ...
 
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