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Newest topics and users posts
23 Jul-18:40:43 Re: black, metallic, yellow oxide? (Bob Carnein)
23 Jul-17:36:31 Re: black, metallic, yellow oxide? (Linus)
23 Jul-17:34:00 Re: black, metallic, yellow oxide? (Linus)
23 Jul-09:37:34 Re: help identify this rock. Sapphire?? (James Catmur)
23 Jul-09:03:02 Re: unknown mineral from pikes peak pegmatite (Bob Morgan)
23 Jul-07:27:50 Re: black, metallic, yellow oxide? (Susan Robinson)
23 Jul-02:23:46 Re: mineral talks live - episode 41 - alan hart - ceo; gem-a, london, england, united king (Tobi)
23 Jul-02:20:06 Re: hillman hall of minerals and gems (Tobi)
23 Jul-02:15:45 Re: black, metallic, yellow oxide? (Tobi)
23 Jul-02:03:58 Re: help identify this rock. Sapphire?? (Tobi)
22 Jul-22:56:37 Re: help identify this rock. Sapphire?? (Steveb)
22 Jul-22:46:39 Re: help identify this rock. Sapphire?? (Gentrydodd)
22 Jul-22:44:53 Re: help identify this rock. Sapphire?? (Volkmar Stingl)
22 Jul-22:41:14 Help identify this rock. Sapphire?? (Gentrydodd)
22 Jul-22:05:14 Re: help identify this rock (Alexsolis)
22 Jul-22:00:01 Re: help identify this rock (Matt_zukowski)
22 Jul-20:07:46 Help identify this rock (Alexsolis)
22 Jul-16:58:25 Re: black, metallic, yellow oxide? (Linus)
22 Jul-15:30:24 Re: black, metallic, yellow oxide? (Linus)
22 Jul-15:20:13 Re: black, metallic, yellow oxide? (Linus)
22 Jul-12:43:41 Re: hillman hall of minerals and gems (Riccardo Modanesi)
22 Jul-09:56:35 Re: unknown mineral from pikes peak pegmatite (Bob Carnein)
22 Jul-03:47:30 Re: black, metallic, yellow oxide? (Tobi)
21 Jul-20:37:55 Re: black, metallic, yellow oxide? (Linus)
21 Jul-20:28:03 Re: black, metallic, yellow oxide? (Pete Richards)

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  Topic: Favourite Fluorites?
Jesse Fisher

Replies: 223
Views: 264362

PostForum: Favourite Minerals   Posted: Jul 14, 2021 01:14   Subject: Re: Favourite Fluorites?
Well, I guess there's always room for a nice Hilton Mine piece!

"Nice" is an understatement, Jesse! This is a real beauty!

Volkmar

Danke! I just feel lucky that I was in the right p ...
  Topic: Favourite Fluorites?
Jesse Fisher

Replies: 223
Views: 264362

PostForum: Favourite Minerals   Posted: Jul 13, 2021 13:50   Subject: Re: Favourite Fluorites?
Well, I guess there's always room for a nice Hilton Mine piece!
  Topic: Favourite Fluorites?
Jesse Fisher

Replies: 223
Views: 264362

PostForum: Favourite Minerals   Posted: Jul 09, 2021 10:01   Subject: Re: Favourite Fluorites?
Another find at the recent "Mini-Tucson" show. This location produced some interesting specimens about 30 years ago, but I have not seen anything since. This one came from an old collection ...
  Topic: Favourite Fluorites?
Jesse Fisher

Replies: 223
Views: 264362

PostForum: Favourite Minerals   Posted: Jul 07, 2021 10:27   Subject: Re: Favourite Fluorites?
Tobi - you are correct, it has been quiet here for too long. I think some of us have been in hibernation for a while, however!

Few mineral shows and not much travel, but I did make it to the " ...
  Topic: Favourite Tourmalines?
Jesse Fisher

Replies: 27
Views: 25164

PostForum: Favourite Minerals   Posted: Jul 06, 2021 10:13   Subject: Re: Favourite Tourmalines?
In the mid 1980s, when I was first getting serious about mineral collecting, specimens from the pegmatites of Northern Pakistan, and to a lesser degree the neighboring provinces of Afghanistan were be ...
  Topic: Collecting in UK
Jesse Fisher

Replies: 5
Views: 1016

PostForum: Rockhounding trips   Posted: May 20, 2021 01:29   Subject: Re: Collecting in UK
North Yorkshire, Co. Durham, and Cumbria have many famous and historic mineral locations. If you are interested in learning about these, I would recommend starting with getting a copy of "Mineral ...
  Topic: A mineralogical trip through Germany / Baden-Wuerttemberg
Jesse Fisher

Replies: 41
Views: 44740

PostForum: A mineralogical trip through Germany   Posted: May 10, 2021 12:52   Subject: Re: A mineralogical trip through Germany / Baden-Wuerttemberg
I will trust Tobi when he says that there are never too many Clara fluorites!
  Topic: Tucson - 2021 April
Jesse Fisher

Replies: 25
Views: 6217

PostForum: Mineral Shows   Posted: Apr 20, 2021 10:59   Subject: Re: Tucson - 2021 April
As mentioned, the show was small and sparsely attended compared to usual, but the weather was good, tacos and cerveza plentiful, and there's always something to be found that remains within budget. So ...
  Topic: Sometimes fluorescent
Jesse Fisher

Replies: 5
Views: 1439

PostForum: Off-Topic and Introductions   Posted: Feb 28, 2021 01:15   Subject: Re: Sometimes fluorescent
In 1858 British chemist George Stokes defined the concept of fluorescence, based in part of his observations of the reaction of fluorite from the Weardale area of Northern England. Fluorite from this ...
  Topic: Heat changes some minerals - how?
Jesse Fisher

Replies: 11
Views: 2217

PostForum: Off-Topic and Introductions   Posted: Jan 29, 2021 11:29   Subject: Re: Heat changes some minerals - how?
Heating minerals below their melting point can induce any of a number of changes, depending on the structure and composition of the mineral. With minerals with structural water (zeolites for example), ...
  Topic: Final balance time.
Jesse Fisher

Replies: 18
Views: 5064

PostForum: Comments & Suggestions   Posted: Jan 11, 2021 14:37   Subject: Re: Final balance time.
As I generally do not purchase specimens on the internet, things have been slow since Tucson last February. I did recently come up with this nice baveno-twin microcline and smoky quartz combo from Taw ...
  Topic: April shows in Tucson??
Jesse Fisher

Replies: 10
Views: 4490

PostForum: Mineral Shows by Gail Spann   Posted: Dec 16, 2020 11:46   Subject: Re: April shows in Tucson??
I suspect that these dates are hopeful/wishful thinking at this point. I have been told by a friend in Tucson who is involved with one of the shows that the local county health department is not curre ...
  Topic: A mineralogical trip through the regions of the UK - England / County Durham
Jesse Fisher

Replies: 117
Views: 117150

PostForum: A mineralogical trip through the regions of the UK   Posted: Nov 09, 2020 11:45   Subject: Re: A mineralogical trip through the regions of the UK - England / County Durham
Some recent finds at the Eastgate Cement Quarry (aka "Blue Circle"). Ian Bruce has gained access to the property and is having some luck. He has named the workings, which are so far open-cas ...
  Topic: What's up with minfind?
Jesse Fisher

Replies: 19
Views: 14536

PostForum: Off-Topic and Introductions   Posted: Sep 27, 2020 10:57   Subject: Re: What's up with minfind?
After reading that, all I can say is "what a frigging mess!" Hope Jolyon can salvage something out of it.
  Topic: Possible Fake: Blue Hemimorphite from Ojuela
Jesse Fisher

Replies: 40
Views: 20680

PostForum: Incorrect classification and fakes   Posted: Sep 02, 2020 10:52   Subject: Re: Possible Fake: Blue Hemimorphite from Ojuela

mmm...how mimsy is that?

Why, all, of course!
  Topic: Possible Fake: Blue Hemimorphite from Ojuela
Jesse Fisher

Replies: 40
Views: 20680

PostForum: Incorrect classification and fakes   Posted: Sep 01, 2020 18:26   Subject: Re: Possible Fake: Blue Hemimorphite from Ojuela
If anyone is interested, you can find it under the name "borogroves"
  Topic: Possible Fake: Blue Hemimorphite from Ojuela
Jesse Fisher

Replies: 40
Views: 20680

PostForum: Incorrect classification and fakes   Posted: Sep 01, 2020 16:14   Subject: Re: Possible Fake: Blue Hemimorphite from Ojuela
Here is the link:



ZQyE-gXKYKA
  Topic: Possible Fake: Blue Hemimorphite from Ojuela
Jesse Fisher

Replies: 40
Views: 20680

PostForum: Incorrect classification and fakes   Posted: Sep 01, 2020 15:50   Subject: Re: Possible Fake: Blue Hemimorphite from Ojuela
Hello Jordi,
I have the video from Peter and can post it to YouTube, if you want. Do I then just post the link here in a reply message?

Jesse
  Topic: Is this Calcite or Dolomite
Jesse Fisher

Replies: 8
Views: 2393

PostForum: What is it? - Where is it from?   Posted: Jul 31, 2020 10:46   Subject: Re: Is this Calcite or Dolomite
As Vic mentioned, calcite is calcium carbonate, and dolomite is calcium, magnesium carbonate. Some sort of chemical test for magnesium would distinguish them, but would cost a bit. Physically, calcite ...
  Topic: Sodium Dithonite, Waller solution, Oxalic acid or HCl
Jesse Fisher

Replies: 9
Views: 5415

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Jul 21, 2020 10:42   Subject: Re: Sodium Dithonite, Waller solution, Oxalic acid or HCl
I generally try and avoid using HCl or oxalic acid to remove iron stain, as both will leave yellow stain on drying unless you repeatedly wash the specimen in distilled water afterwards. Specimens such ...
 
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