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Newest topics and users posts
19 Jun-20:48:46 Re: fake ruby? (John Betts)
19 Jun-20:20:29 Re: cleaning nifontovite (Linus)
19 Jun-20:00:35 Re: cleaning nifontovite (Peter Megaw)
19 Jun-16:17:25 Amethyst and...? (Linus)
19 Jun-09:17:29 Re: collection of annemieke en rob schnerr (Rob Schnerr)
19 Jun-08:52:18 Re: fake ruby? (Bob Carnein)
19 Jun-00:44:02 Re: a potpourri of musings....barely related to minerals. (Peter Lemkin)
19 Jun-00:01:57 Re: fake ruby? (Fuss)
18 Jun-22:24:43 Re: a potpourri of musings....barely related to minerals. (Bob Harman)
18 Jun-13:28:28 Re: cleaning nifontovite (Linus)
18 Jun-10:58:47 Re: collection of annemieke en rob schnerr (Rob Schnerr)
18 Jun-10:52:09 Re: cinnabar and not realgar inclusions? (Rob Schnerr)
18 Jun-08:03:25 Re: malachite (Raystraw)
18 Jun-06:40:06 Re: cleaning nifontovite (Bob Harman)
18 Jun-06:38:09 Re: cleaning nifontovite (Peter Megaw)
18 Jun-04:49:48 Re: cleaning nifontovite (R Saunders)
18 Jun-01:11:10 Re: collection of annemieke en rob schnerr (Tobi)
18 Jun-01:03:33 Re: malachite (Tobi)
17 Jun-22:03:54 Re: cleaning nifontovite (Peter Megaw)
17 Jun-19:20:20 Re: malachite (Bob Harman)
17 Jun-17:54:29 Malachite (Raystraw)
17 Jun-14:53:24 Re: cleaning nifontovite (Bob Harman)
17 Jun-14:53:18 Re: cleaning nifontovite (Kushmeja)
17 Jun-14:40:38 The mizunaka collection - quartz (Am Mizunaka)
17 Jun-14:37:55 Cleaning nifontovite (Linus)

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Author Message
  Topic: Wulfenite USA
Chris Rayburn

Replies: 4
Views: 563

PostForum: What is it? - Where is it from?   Posted: Apr 10, 2019 05:48   Subject: Re: Wulfenite USA
Agree with John and Bob; Rowley Mine, Maricopa County, AZ. No question in my mind. Thanks for the good photographs...they make helping much easier.
  Topic: Tucson Show 2019
Chris Rayburn

Replies: 126
Views: 45331

PostForum: News about shows   Posted: Feb 19, 2019 07:50   Subject: Re: Tucson Show 2019
Bob, thank you so much for the excellent job (as always) of documenting the show, and in particular these cases. I have to agree, these displays set a new standard for the Tucson Show (or any show). ...
  Topic: 50+ lbs. Octahedral Pyrite - Is it from Huanzala Mine?
Chris Rayburn

Replies: 8
Views: 1323

PostForum: What is it? - Where is it from?   Posted: Jan 08, 2019 06:47   Subject: Re: 50+ lbs. Octahedral Pyrite - Is it from Huanzala Mine?
I have had good luck cleaning pyrite with both hydrochloric and phosphoric acids, and I know HCl is used to clean Huanzala specimens. That said, it doesn't sound like you have any lesser specimens on ...
  Topic: Irradiated fluorite from China?
Chris Rayburn

Replies: 5
Views: 1370

PostForum: Incorrect classification and fakes   Posted: Jan 07, 2019 07:44   Subject: Re: Irradiated fluorite from China?
Hi Pierre--there was a recent discussion thread about this topic on Mindat. It may shed some light on the subject:
https://www.mindat.org/mesg-6-451984.html
  Topic: The Mineralogical Record
Chris Rayburn

Replies: 18
Views: 20004

PostForum: The Mineralogical Record   Posted: Dec 31, 2018 08:28   Subject: Re: The Mineralogical Record
Very thoughtful input Bob. This thread took a bit of a turn from Bob H's original purpose. I believe you've brought it back around to solid ground. I happen to agree with the points you've made; no ...
  Topic: Zeolites and other Icelandic minerals from Hvalfjörđur
Chris Rayburn

Replies: 5
Views: 1303

PostForum: Mines and Mineral Localities   Posted: Nov 01, 2018 05:43   Subject: Re: Zeolites and other Icelandic minerals from Hvalfjörđur
Thank you for sharing these, Bergur. As an avid field collector, I always appreciate seeing photos of collecting sites and in situ material to help bring the collecting experience to life, although I ...
  Topic: Collecting quartz on the Little Falls dolostone
Chris Rayburn

Replies: 117
Views: 98957

PostForum: Mines and Mineral Localities   Posted: Oct 04, 2018 09:27   Subject: Re: Collecting quartz on the Little Falls dolostone
Good golly, that's a beauty, Vic. Some one of these days I'll make a collecting trip back there.
  Topic: Collecting quartz on the Little Falls dolostone
Chris Rayburn

Replies: 117
Views: 98957

PostForum: Mines and Mineral Localities   Posted: Oct 04, 2018 06:14   Subject: Re: Collecting quartz on the Little Falls dolostone
Wow. That's quite the haul for a day that didn't begin with collecting in mind! How's that water line coming along?
  Topic: We celebrate the 12th anniversary of the beginning of FMF!
Chris Rayburn

Replies: 19
Views: 3046

PostForum: Comments & Suggestions   Posted: Aug 07, 2018 07:45   Subject: Re: Today we celebrate the 12th anniversary of the beginning of FMF!
Long live FMF, indeed! Thanks for all that you do to keep this forum vital and valuable.
  Topic: Maine tourmaline find a month ago.
Chris Rayburn

Replies: 15
Views: 16709

PostForum: Mines and Mineral Localities   Posted: Aug 07, 2018 07:40   Subject: Re: Maine tourmaline find a month ago.
That is a happy man
  Topic: Collection Macros
Chris Rayburn

Replies: 31
Views: 5514

PostForum: Micros & Macros - Images of Minerals   Posted: Aug 05, 2018 15:30   Subject: Re: Collection Macros
Agree, looks like acid etched calcite. Dilute HCl and vinegar should have a similar effect on calcite, although dilute HCl will generally be more aggressive. HCl should have no effect on fluorite. ...
  Topic: Collection Macros
Chris Rayburn

Replies: 31
Views: 5514

PostForum: Micros & Macros - Images of Minerals   Posted: Aug 05, 2018 07:12   Subject: Re: Collection Macros
A very simple and definitive test--place a couple of drops of vinegar on it. If it fizzes, it's calcite; if not, it's fluorite or something else.
  Topic: Quartz collecting outings in South Africa
Chris Rayburn

Replies: 354
Views: 254710

PostForum: The Ten Thousand Club   Posted: Jun 22, 2018 06:34   Subject: Re: Quartz collecting outings in South Africa
Beautiful Pierre! Those are among the clearest and sharpest crystals you've found on your many outings. Congratulations.
  Topic: New Mexico Collecting - (27)
Chris Rayburn

Replies: 33
Views: 25584

PostForum: Featured Columns of FMF   Posted: May 24, 2018 16:09   Subject: Re: New Mexico Collecting - (27)
Always happy to tee 'em up...and I'm not even a golfer.
  Topic: New Mexico Collecting - (27)
Chris Rayburn

Replies: 33
Views: 25584

PostForum: Featured Columns of FMF   Posted: May 24, 2018 06:25   Subject: Re: New Mexico Collecting - (27)
Philip, you may be coming to this, but what is the current thinking on the source of the color in these specimens? The explanation I've heard most often is radiation from trace isotopes in the halite ...
  Topic: Fake specimens from the Erongo and Brandberg region.
Chris Rayburn

Replies: 23
Views: 9508

PostForum: Incorrect classification and fakes   Posted: Apr 10, 2018 07:32   Subject: Re: Fake specimens from the Erongo and Brandberg region.
Appreciate this Pierre.
  Topic: Presentation of new members - Reference Thread
Chris Rayburn

Replies: 393
Views: 216762

PostForum: Off-Topic and Introductions   Posted: Mar 17, 2018 08:21   Subject: Re: Presentation of new members - Phil Persson from Denver, Colorado
Hey Phil--welcome! Looking forward to your contributions.
  Topic: Tucson Show 2018
Chris Rayburn

Replies: 158
Views: 103866

PostForum: News about shows   Posted: Feb 03, 2018 09:27   Subject: Re: Tucson Show 2018
Hi Jim and John,

Don't mean to insert myself into this exchange, but I too am intrigued by co-occurrence of quartz and cristobalite. Is it possible that changing PT conditions during crystallizati ...
  Topic: The overall health of this hobby
Chris Rayburn

Replies: 26
Views: 9971

PostForum: Off-Topic and Introductions   Posted: Jan 07, 2018 05:48   Subject: Re: The overall health of this hobby
One additional way in which the Internet has changed our hobby/profession is the growth of virtual mineral collecting clubs on social media, particularly Facebook. Most established clubs have set up ...
  Topic: Quartz collecting outings in South Africa
Chris Rayburn

Replies: 354
Views: 254710

PostForum: The Ten Thousand Club   Posted: Sep 08, 2017 07:57   Subject: Re: Quartz collecting outings in South Africa
Hi Pierre

Thanks as always for taking the time to record and post your outings. I know it's a labor of love! I also know that the FMF community very much enjoys your posts, based on the number of ...
 
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