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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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A general guide for using the Forum with some rules and tips
The information provided within this Forum about localities is only given to allow reference to them. Any visit to any of the localities requires you to obtain full permission and relevant information prior to your visit. FMF is strictly against any illicit activities related to collecting minerals.
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  Topic: New generation for picture - Ploum
dontgogreen

Replies: 1282
Views: 1022327

PostForum: Collection photos and Collector's page   Posted: May 07, 2020 07:59   Subject: Re: New generation for picture - Ploum
I really appreciate that you give so much attention to these titanium minerals. It is so interesting to see them occur together, as well as the different types of rutile/hematite intergrowths. Thanks ...
  Topic: Between mineral collecting and woodworking
dontgogreen

Replies: 0
Views: 25801

PostForum: Conserving, Preparing and Cleaning Minerals   Posted: Feb 10, 2020 16:23   Subject: Between mineral collecting and woodworking
I would like to share some of my recent work that I feel has beautiful synergy between mineral collecting and woodworking. Most of you are probably aware that traditional oriental mineral appreciation ...
  Topic: Two small mines in Western Emerald belt of Colombia
dontgogreen

Replies: 17
Views: 18997

PostForum: Rockhounding trips   Posted: Apr 17, 2019 08:00   Subject: Re: Two small mines in Western Emerald belt of Colombia
That photo of your car is chilling. I've traveled in Colombia and going over the side like that is death in many places.
  Topic: Women's private collection sub-forum
dontgogreen

Replies: 24
Views: 21629

PostForum: Forum questions   Posted: Mar 22, 2019 08:22   Subject: Re: Women's private collection sub-forum
Come to think of that, does anyone happen to know whether there is a gender bias in crows and ravens with regard to collecting stuff? Are both sexes doing it?

The male satin bowerbird creates a nes ...
  Topic: New generation for picture - Ploum
dontgogreen

Replies: 1282
Views: 1022327

PostForum: Collection photos and Collector's page   Posted: Mar 10, 2019 07:38   Subject: Re: New generation for picture - Ploum
Beautiful photo from Cavradi. Thanks for sharing, this is very nice.
  Topic: Pseudoctahedral Calcite
dontgogreen

Replies: 11
Views: 19019

PostForum: Rockhounding trips   Posted: Nov 29, 2018 11:14   Subject: Re: Pseudoctahedral Calcite
We made another trip back to this area to see what had turned up. It took about half an hour to gather a large quantity of grey vuggy limestone riddled with calcite crystals. Many of the large piece ...
  Topic: Golden rutile analysis?
dontgogreen

Replies: 0
Views: 19515

PostForum: Minerals and Mineralogy   Posted: Nov 02, 2018 13:43   Subject: Golden rutile analysis?
Is anyone aware of analyses performed on the golden rutiles that grow epitaxially on hematite? I am wondering what causes the yellow-golden color observed at localities like Novo Horizonte, or the mi ...
  Topic: Collection of Dontgogreen
dontgogreen

Replies: 32
Views: 31830

PostForum: Collection photos and Collector's page   Posted: Nov 02, 2018 07:51   Subject: Re: Collection of Dontgogreen
Thank you. I will certainly continue, although the limiting factor here is actually acquiring new minerals. So, stick around for a few decades and watch the collection grow.
  Topic: Collection of Dontgogreen
dontgogreen

Replies: 32
Views: 31830

PostForum: Collection photos and Collector's page   Posted: Nov 01, 2018 10:50   Subject: Re: Collection of Dontgogreen
Oh dear, this is not a rutile... but I feel that an ongoing Tungsten project at work is a good enough excuse to stock up on ferberite! It's still black, but definitely not ugly. And to balance it ou ...
  Topic: Collection of Dontgogreen
dontgogreen

Replies: 32
Views: 31830

PostForum: Collection photos and Collector's page   Posted: May 23, 2018 10:24   Subject: Re: Collection of Dontgogreen
Here is another thumbnail from Graves Mountain; it is similar in character to the thumbnail posted previously but lacking matrix. It is multiply twinned and the re-entrant angle may be seen at the to ...
  Topic: Collection of Dontgogreen
dontgogreen

Replies: 32
Views: 31830

PostForum: Collection photos and Collector's page   Posted: May 04, 2018 09:18   Subject: Re: Collection of Dontgogreen
Here is the entire specimen. Unfortunately not entirely free from damage, but there are rather few references to large, good quality rutiles from this locality in the literature.
  Topic: Collection of Dontgogreen
dontgogreen

Replies: 32
Views: 31830

PostForum: Collection photos and Collector's page   Posted: May 03, 2018 15:44   Subject: Re: Collection of Dontgogreen
Here is an interesting multiply-twinned crystal reported to be from Zagi Mountain. I will produce photos of the full specimen at a later date, but for now I am interested to explore the twin boundari ...
  Topic: Tucson Show 2018
dontgogreen

Replies: 158
Views: 169017

PostForum: News about shows   Posted: May 03, 2018 08:04   Subject: Re: Tucson Show 2018
The Tuscon show reports, although welcome, is also overwhelming and drowns out the other entries on FMF. It may be too a complicated affair, but I would like to see a separate topic column for Tuscon ...
  Topic: Tucson Show 2018
dontgogreen

Replies: 158
Views: 169017

PostForum: News about shows   Posted: Feb 20, 2018 12:32   Subject: Re: Tucson Show 2018
If anyone has high-resolution photographs or links to them of the MAD case or Ralph Clark's display, would you please share them with us?
  Topic: Collection of Dontgogreen
dontgogreen

Replies: 32
Views: 31830

PostForum: Collection photos and Collector's page   Posted: Jan 13, 2018 23:28   Subject: Re: Collection of Dontgogreen
A multiply twinned equant crystal from Graves Mountain with excellent luster.
  Topic: Collection of Dontgogreen
dontgogreen

Replies: 32
Views: 31830

PostForum: Collection photos and Collector's page   Posted: Jan 12, 2018 23:38   Subject: Re: Collection of Dontgogreen
The hoppered termination lets the red color come through nicely at the top. These striated prisms are some of my favorites.
  Topic: Percentage of minerals known
dontgogreen

Replies: 11
Views: 9635

PostForum: Minerals and Mineralogy   Posted: Jan 08, 2018 09:13   Subject: Re: Percentage of minerals known
Speaking of mineral collecting astronauts, what might be the effects on mineral growth of formation in lower gravity? I believe they have done some mineral synthesis experiments on the ISS, but I am ...
  Topic: Minerals sans life
dontgogreen

Replies: 15
Views: 12364

PostForum: Minerals and Mineralogy   Posted: Jan 06, 2018 18:03   Subject: Re: Minerals sans life
You're going to have this thread shut down if you post deliberately inflammatory remarks, which is a shame because it's an interesting topic. You might edit your remark if you would really like to con ...
  Topic: Collection of Dontgogreen
dontgogreen

Replies: 32
Views: 31830

PostForum: Collection photos and Collector's page   Posted: Dec 22, 2017 09:26   Subject: Re: Collection of Dontgogreen
Hematite and rutile both posses a hexagonal close-packed oxygen sublattice, which enables simple transitions among them by exsolution, epitaxy, and intergrowth (Daneu et al. [2014] and references the ...
  Topic: Collection of Dontgogreen
dontgogreen

Replies: 32
Views: 31830

PostForum: Collection photos and Collector's page   Posted: Dec 15, 2017 08:59   Subject: Re: Collection of Dontgogreen
After spending a little time collecting worldwide minerals without any focus, I have narrowed my interest to rutile crystals. I think their beauty is a bit more subtle than many species, and they are ...
 
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